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Eerie brainlike nebula captured in stunning new JWST images

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The death of a star never looked so beautiful. New images captured by the James Webb Space Telescope reveal what looks eerily like a brain floating in space and housed inside a semitransparent skull.

This is the “Exposed Cranium” Nebula, also known as Nebula PMR 1. Located some 5,000 light-years away in the constellation Vela, it’s a massive, moribund star coming to the end of its fuel-burning life. As the star dies, it is shedding layers of its material, generating billowing clouds of gas and dust.

The new images show the nebula in both near- and mid-infrared light, revealing a dark channel that runs through the middle of the clouds of gas and dust—just like the longitudinal fissure that separates our brain’s right and left hemispheres. In the nebula, this feature may be caused by jets coming from the dying star, pushing the inner gas out. The outer layer of gas is mostly made up of simple hydrogen, but the inner gas clouds are more complex.

It’s unclear what will happen to the dying star. If it is massive enough, it will explode into a supernova. But if not, it will deteriorate until only its core remains, at which point it will become a white dwarf, a dense object that astronomers believe cools over time to become a black dwarf—a cold, dark object that exists only in theory, perhaps because the universe is too young for any to have formed.

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https://static.scientificamerican.com/dam/m/59675801630c4ad7/original/JWST-cranium-nebula.jpg?m=1772216940.263&w=900NASA/ESA/CSA/STScI (image); Joseph DePasquale/STScI (image processing)

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Click the link below for the complete article:

https://www.scientificamerican.com/article/eerie-brain-like-nebula-captured-in-stunning-new-jwst-images/

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US-Israel war on Iran live: Oil price soars in early trading; Israel launches fresh wave of ‘large-scale strikes’ on Tehran

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Israel launches ‘large-scale strikes’ on Tehran

The Israeli military said it was carrying out “large-scale strikes” on Tehran on Monday, two days since the start of a US-Israeli campaign against Iran.

“The Israeli Air Force … has begun an additional wave of strikes against the Iranian terror regime at the heart of Tehran,” the military said in a statement, quoted by Agence France-Presse.

Lebanon’s Hezbollah has just claimed responsibility for the projectiles launched from Lebanon to Israel.

The militant group said it launched missiles and drones towards Israel in retaliation for the killing of Iran’s supreme leader.

Israel’s military just said it had begun striking Hezbollah across Lebanon.

More now on the Israeli military saying projectiles fired from Lebanon had triggered air raid sirens in northern Israel – it also said it had had intercepted one of them.

“Following the sirens that sounded in several areas in northern Israel, a projectile that crossed from Lebanon into Israeli territory was intercepted by the Israeli Air Force, and several projectiles fell in open areas,” the Israeli military posted on Telegram on Monday, cited by the AFP news agency.

Lebanese militant group Hezbollah said on Sunday it had a “duty” to support backer Iran after Israeli and US strikes.

But the group has not confirmed action since the US and Israel began attacks on Saturday, killing Iran’s supreme leader and sparking a wave of retaliatory drone and missile strikes.

Hezbollah has been weakened from conflict with Israel, which it entered to support Hamas after the Palestinian militant group’s deadly attack on Israel in October 2023 and the subsequent war in the Gaza strip.

Israel and Hezbollah signed a ceasefire agreement in November 2024, although Israel has continued to strike targets it says are linked to the Lebanese group.

Hezbollah did not intervene during a 12-day war between Israel and Iran last June.

Defence and intelligence experts are describing the strike on a UK airbase in Cyprus as a “possible Iranian one-way drone attack against RAF Akrotiri”.

The base is located over 600 miles (965km) from Iran.

Alerts, thought to have been put out by the UK’s Ministry of Defence, were sent to military personnel and their families by email and text message.

Cyprus authorities confirm drone strike on UK base

Helena Smith

Helena Smith

Authorities in Cyprus have confirmed the drone strike. The sovereign base areas and surrounding areas will remain in a state of high alert amid fears of possible further strikes.

All roads to the military facilities have been cordoned off, the Guardian has learned.

SMS messaging sent to base personnel included this:

We are aware of an ongoing security threat. At this time please remain indoors and allow the emergency services access to react to the incident.

The Main entry point at RAF Akrotiri remains closed at this point …

A small Drone has impacted the airfield at RAF Akrotiri and all agencies are responding. There are no casualties but there is minor damage. However the incident is ongoing.

Further to the report that the UK’s Akrotiri air force base in Cyprus has been hit by a drone, we’ve have word that this SMS message was sent to base personnel before the strike:

There is an ongoing security threat. Please return to your homes and stay inside until further official notice. Move away from windows and take cover behind or beneath substantial, solid furniture. Please await further instruction.

Shares of Australia’s flagship carrier Qantas Airways slumped more than 10% to their lowest level in 10 months on Monday after the US and Israeli strikes on Iran.

The airline’s shares fell as much as 10.4% to A$8.92 each when the Australian market opened on Monday, the lowest level since 2 May 2025, Reuters is reporting.

Drone hits British airbase in Cyprus – report

The UK’s Akrotiri air force base in Cyprus has been struck by a drone, according to a report in the Cyprus Mail.

Personnel on the bases were informed that a “small drone” had impacted the airfield and that the bases’ authorities were responding, the report on Monday said.

There were no casualties as a result, but “minor damage” was caused.

The bases’ authorities instructed personnel to remain in place and await further instruction, warning there may be additional impact, the report said.

The explosion and siren sounds were heard in nearby Limassol.

The British bases had earlier declared a “security threat” shortly before midnight

The report could not be independently verified.

The Israeli military is saying projectiles have been launched from Lebanon, and sirens are sounding in several areas in northern Israel as a result.

We’ll have more on this soon as it comes to hand.

Oil prices soar amid war on Iran

Oil prices have jumped in Asian trade on the back of the turmoil in the Middle East.

In early trade in Asia on Monday, Brent Crude was trading at $80.20 per barrel, up 13% from the closing price of $72.87 on Friday, Bloomberg News reported.

  • This is Adam Fulton picking up our live reporting – stay with us for the latest

Summary of the day so far

  • Iran’s supreme leader, Ali Khamenei, was killed on Saturday after the US and Israel launched a war on the country to trigger regime change. The US president had earlier announced the death of the ayatollah, who ruled Iran since 1989, in a post on Truth Social. Iran’s former president, Mahmoud Ahmadinejad, was also killed in strikes.

  • Donald Trump warned on Sunday that combat operations in Iran were continuing and would carry on “until all of our objectives are achieved.” He continued to justify the operation, saying “an Iranian regime armed with long range missiles and nuclear weapons would be a dire threat to every American… I once again urge the Revolutionary Guard, the Iranian military police, to lay down your arms and receive full immunity or face certain death.”

  • Trump told Fox News that 48 leaders have been killed in US and Israeli strikes on Iran. “It’s moving along. It’s moving along rapidly. This has been this way for 47 years,” he said. “Nobody can believe the success we’re having; 48 leaders are gone in one shot.”

  • Three US service members have been killed in action as part of US military operations against Iran, the US Central Command said in a statement on Sunday. These are the first confirmed deaths since the US began launching strikes against Iran on Saturday. Trump warned in his Truth Social video that there would likely be more casualties.

  • The death toll from a missile strike on a girls’ school in southern Iran has risen to almost 150, according to Iranian state media. Mizan news agency, the official news outlet of Iran’s judiciary, reported that the number killed in Saturday’s strike on a girls’ elementary school in Minab in southern Iran had risen to 148 killed, with 95 others wounded. The school, which was struck on Saturday morning, appears to be the worst mass casualty event of the US-Israeli-led bombing campaign on Iran so far.

  • Trump said earlier that Iran’s new leadership wants to talk to him and that he has agreed, according to an interview with The Atlantic. “They want to talk, and I have agreed to talk, so I will be talking to them. They should have done it sooner,” he said.

  • Just 27% of Americans approve of the US strikes that killed Iran’s leader on Saturday, while about half — including one in four Republicans — believe Trump is too willing to use military force, according to a Reuters/Ipsos poll that concluded on Sunday.

  • UK prime minister Keir Starmer agreed to allow the US to use UK military bases to launch attacks that degrade Iran’s missiles. In a recorded statement, the prime minister said the “only way to stop the threat is to destroy the missiles at source in their storage depots or the launchers which are used to fire the missiles”.

The Philippine Embassy in Israel confirmed the death of a Filipino national in a missile attack in Tel Aviv, according to the Associated Press.

The victim, Mary Ann V. de Vera, 32, a caregiver from Basista, Pangasinan, had been working in Israel since 2019. Her identity was confirmed through biometric records at the Abu Kabir Forensic Institute, where her husband also positively identified her remains.

Ambassador Aileen Mendiola conveyed condolences to the family and assured them of the Philippine government’s full assistance, the embassy said in a statement.

Cuban president Miguel Díaz-Canel wrote Sunday on social media that his administration extended “heartfelt condolences” to Iran’s people and its government for what he called the assassination of Khamenei.

“The execrable act constitutes a scrupleless violation of all the norms of International Law and human dignity,” he wrote. “In Cuba, he will be remembered as a distinguished statesman and leader of his people, who contributed to the development of friendly relations between Cuba and Iran.”

Turkish president Recep Tayyip Erdogan has also issued a message of condolence over the death of Iran’s supreme leader.

In a post on X, Erdogan wrote: “I extend my condolences to the esteemed Khamenei, praying that the Almighty Allah grants him mercy, and offer my sympathies to the brotherly people of Iran; I convey my condolences on behalf of my country and my nation.”

He added: “Together with the people of Iran, we in Turkey will steadfastly continue our efforts to ensure that all our friends and brothers in the region regain the peace and stability they deserve, that the conflict raging in our region comes to an end, and that we return to diplomacy.”

Trump says attack ‘will continue until all of our objectives are achieved.’

Donald Trump warned on Sunday that combat operations in Iran were continuing and would carry on until all of Washington’s objectives are achieved.

“Combat operations continue at this time in full force, and they will continue until all of our objectives are achieved. We have very strong objectives,” Trump said in a recorded video statement posted first on Truth Social. He confirmed that three US service members had been killed and said there would likely be more casualties, vowing to avenge the deaths of Americans.

“As one nation, we grieve for the true American patriots who have made the ultimate sacrifice for our nation, even as we continue the righteous mission for which they gave their lives,” he said. “And sadly, there will likely be more before it ends.”

He continued to justify the operation, saying “an Iranian regime armed with long range missiles and nuclear weapons would be a dire threat to every American… I once again urge the Revolutionary Guard, the Iranian military police, to lay down your arms and receive full immunity or face certain death.”

This is the second video statement he has posted exclusively on Truth Social, his social media platform, which recently declared a big loss. The platform is part of Trump Media and Technology Group, a company whose share price has reached near all-time lows this month.

France and Lebanon are postponing a March 5 conference on the Lebanese army to April, the Elysee palace said in a statement on Sunday, following the launch of US-Israeli strikes on Iran.

France, Lebanon’s former colonial power, plans to mobilize international backing for the Lebanese armed forces and internal security forces at the conference.

The statement stressed that the gravity of the regional situation underscored the need to safeguard Lebanon’s stability, support its legitimate institutions, and ensure the full restoration of its sovereignty.

UK agrees to US request to use British military bases for strikes

Rowena Mason

Rowena Mason

Keir Starmer has agreed to allow the US to use UK military bases to
launch attacks that degrade Iran’s missiles.

In a recorded statement, the prime minister said the “only way to stop the threat is to destroy the missiles at source in their storage depots or the launchers which are used to fire the missiles”.

“The US has requested permission to use British bases for that specific and limited defensive purpose,” he said.

“We have taken the decision to accept this request – to prevent Iran firing missiles across the region … killing innocent civilians … putting British lives at risk … and hitting countries that have not been involved.”

In addition, British jets are in the air as part of coordinated defensive operations, which he said had “already successfully intercepted Iranian strikes”.

He said it remains the case that the UK was not involved in the strikes on Iran. “Our decision that the UK would not be involved with the strikes on Iran was deliberate,” the prime minister said. “Not least because we believe that the best way forward for the region and the world is a negotiated settlement.”

But he said Iran’s approach was becoming more reckless and dangerous to civilians, leading to the decision to allow the US to use UK military bases. He also revealed that there are at least 200,000 British citizens in the region – and urged them to register their presence and follow Foreign Office travel advice.

The leaders of Britain, France, and Germany have said they are ready to take steps to defend their interests in the region after the “indiscriminate and disproportionate” missile attacks by Iran.

In a joint statement on Iran, the E3 leaders said:

“E3 leaders are appalled by the indiscriminate and disproportionate missile attacks launched by Iran against countries in the region, including those who were not involved in initial US and Israeli military operations. Iran’s reckless attacks have targeted our close allies and are threatening our service personnel and our civilians across the region.

“We call on Iran to stop these reckless attacks immediately. We will take steps to defend our interests and those of our allies in the region, potentially through enabling necessary and proportionate defensive action to destroy Iran’s capability to fire missiles and drones at their source.

They continued: “We have agreed to work together with the US and allies in the region on this matter. We will take steps to defend our interests and those of our allies in the region, potentially through enabling necessary and proportionate defensive action to destroy Iran’s capability to fire missiles and drones at their source. We have agreed to work together with the US and allies in the region on this matter.”

 

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A smoke plume rises following a missile strike on a building in Tehran amid ongoing strikes by the US and Israel on Iran. Follow live for latest updates.A smoke plume rises following a missile strike on a building in Tehran amid ongoing strikes by the US and Israel on Iran. Follow live for latest updates. Photograph: AFP/Getty Images

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Click the link below for the complete article:

https://www.theguardian.com/us-news/live/2026/mar/01/us-israel-war-on-iran-ayatollah-ali-khamenei-i-dead-latest-reports

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Big Change Seems Certain in Iran. What Kind Is the Question.

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Experts say that Iran’s clerical rulers may be too deeply entrenched for Iranians to topple them, and that the U.S. and Israeli strikes risk setting off deeper radicalization or violence.

The death of Iran’s supreme leader, Ayatollah Ali Khamenei, is a watershed moment in the 47-year existence of the Islamic Republic. The scenes that followed — throngs of Iranians taking to the streets to celebrate, others turning out to grieve — signal the deep uncertainty about what comes next.

There are now three key questions: How will protesters respond to President Trump’s call to take over the government? Can Iran’s authoritarian system survive? And could the attack unleash a chaotic battle for power?

Mr. Trump and Israel’s prime minister, Benjamin Netanyahu, have made public appeals to Iran’s people, arguing that they have offered them a historic opportunity to topple their brutal authoritarian government. How they envision an unarmed population facing down a heavily armed, ideologically driven security force is less clear.

Though it has been only two days of strikes, some regional experts are skeptical that an aerial campaign alone could weaken Iran’s government enough that Iranians could bring it down with protests.

Nonetheless, Iran is headed toward a transformative moment, said Farzan Sabet, an analyst on Iran and Middle East politics at the Geneva Graduate Institute in Switzerland.

“Some kind of change will happen in the system,” he said. “But in which direction? We don’t know.”

In some ways, Iranians are ever more defiant after facing a brutal crackdown on nationwide anti-government protests in January, in which security forces killed thousands. As the violent repression subsided, the risks were still high even before the bombardment began. Yet students still protested and held sit-ins, and the families of slain protesters used their memorial services to voice dissent.

After the authorities confirmed Ayatollah Khamenei’s death in the attack, many Iranians dared to celebrate publicly — but not to the point of risking bloodshed.

Arian, a resident of a suburb near Tehran, described seeing people “honking in the streets, shouting chants from windows.” Like all people interviewed inside the country, he asked to withhold his full name for fear of retaliation. On Sunday morning, Arian said, he saw people dancing and singing in the streets — until they noticed the arrival of armed members of Iran’s Basij, the volunteer militia force aligned with Iran’s Revolutionary Guards. “When the Basij showed up, everyone got scared and quickly scattered,” he said.

Even under aerial bombardment, Iran’s domestic security apparatus was still making a show of force. Basij forces, estimated to be around one million strong around the country, have already been mobilized around the capital.

“The brutal killing of protesters in January suggests domestic unrest will be met with an iron fist,” said Ellie Geranmayeh, deputy head of the Middle East and North Africa program at the European Council on Foreign Relations. “This time under far harsher wartime conditions.”

Some airstrikes have begun to target Basij and intelligence headquarters, but experts are divided as to whether airstrikes can inflict enough damage to weaken a deeply entrenched and complex network of security forces across such a large country.

“The problem is these are very multilayered targets,” said Abdolrasool Divsallar, an Iran expert at the Catholic University of Milan. “You hit one, but there are so many others. I am not sure how long it can be sustained, munitions-wise.”

Even as strikes wiped out several of Iran’s top political and military leaders, official statements went to great lengths to show the system was prepared for the shock and still functioning.

After Ayatollah Khamenei’s death, Iranian officials announced that the government would follow the constitutional framework for selecting the country’s next leader, and that a temporary leadership council would be formed.

Ali Larijani, the head of Iran’s Supreme National Security Council, who is seen as the de facto leader behind the scenes, stressed that idea in televised comments urging unity after the ayatollah’s death.

“Throughout history, the Iranian nation has faced even greater challenges; even the Mongols plowed through the entire country, yet the people stood firm and defended their land,” he said. “Such martyrdoms make people resistant and steadfast.”

But the system could undergo a transformation from within. Mr. Larijani, seen as a pragmatist, is the type of figure observers say could potentially strike a deal with Washington now that Iran’s more ideologically driven supreme leader is gone.

Some ordinary Iranians said that such a deal, if accompanied by an easing of international sanctions on Iran, may be palatable to many residents who have suffered through so many months of instability and a collapsing economy.

“Most people aren’t chasing deep meaning,” said Payman, 45, a businessman in Tehran. “They just want a normal life: family, work, small goals. If that becomes possible, a lot of people might stop pushing for bigger change.”

But there is also the possibility Iran’s new leaders would turn the state in the opposite direction — making it even more radical. “The risk is that the more hard-line figures emerge,” Mr. Divsallar said.

The fact that the leadership change was brought about by American and Israeli attacks increases that possibility, he said. “That works completely against what people wished for,” he said.

Experts point to several appointments that could tip a transition in this direction.

Two of the members of Iran’s interim leadership council are hard-liners. One of them, Ayatollah Alireza Arafi, is from Iran’s Council of Guardians, a powerful group of jurists. The other is Gholam-Hossein Mohseni-Eje’i, the head of the judiciary. The third member, President Masoud Pezeshkian, is a moderate, but had been largely sidelined before the war.

Another bellwether is the reported appointment of Gen. Ahmad Vahidi to lead the Revolutionary Guards.

“He’s an incredibly brutal person. So I think they’re not going to hesitate to use extreme violence,” said Mr. Sabet, of the Geneva Graduate Institute.

Beyond toppling or transforming Iran’s current system is the possibility that the war unleashes chaos in a country of 90 million people that borders seven countries.

There are many potential opponents who could use violence to challenge a weakened state. Some ethnic minorities, like the Kurds and the Baluchis, already have armed opposition groups.

Mustafa Hijri, the leader of the Kurdistan Democratic Party in Iran, said that his organization was part of an alliance of groups from Iran’s ethnic minorities, and that among them were parties that “when necessary, may engage in armed resistance as part of their struggle.”

Officials from two Kurdish groups in exile, who asked not to be identified, said they were planning on trying to restart operations inside the country, aiming to encourage an uprising in Iran’s Kurdish region.

Even before the war started, many Iranians were bemoaning the increasingly polarized state of the country in the wake of the brutal crackdowns on the protests.

The government retains an ideological and religious support base that, in the current war, would be highly motivated to fight back against perceived threats. That raises the possibility of internal fragmentation and violence that spills beyond Iran’s borders.

On Sunday, Ayatollah Naser Makarem Shirazi, an influential cleric in Iran, called for jihad against Israel and the United States, according to remarks published in the semiofficial Mehr news agency.

All of these factors create a growing risk of a dangerous insurgency should the state collapse, similar to the insurgency that broke out in Iraq after U.S. forces invaded it in 2003, said Ms. Geranmayeh, the analyst.

“This is a holy war for them — and they seem willing to burn down the country and region before surrendering,” she said. “If this air campaign succeeds in toppling Iran’s leadership, years of chaos probably lie ahead for the country and its people.”

More on the Assault on Iran


  • Iran’s Supreme Leader Killed: Ayatollah Ali Khamenei died during the U.S. and Israeli military strikes. In more than three decades of authoritarian rule, Khamenei brutally crushed dissent at home and expanded the Islamic Republic’s influence abroad. Large crowds of people in the country celebrated his killing, while many others gathered to mourn.

  • Trump and the American Public: Hours after the U.S.-Israeli attacks began, President Trump made unsupported and exaggerated claims in a video posted to social media. The American public’s appetite for an attack on Iran was low before Trump and Israel took action.

  • Hope for Regime Change?: Prime Minister Benjamin Netanyahu of Israel has portrayed the Islamic Republic as a singular threat to his country and the world for more than three decades. Israel and the United States declared that their attacks would pave the way for regime change in Iran. Trump urged for Iranians to “take over” their government, but questions remained about how much effort his administration would put into changing the Iranian government.

  • Iran Claims Children Killed in Strikes: HRANA, an Iranian rights group based in Washington, said late Saturday that at least 133 civilians had been killed and 200 others wounded in the attacks. A strike in the town of Minab was one of two that appear to have hit schools on Saturday.

  • Israel’s Shelter Shortage: Iranian missile and drone attacks repeatedly targeted Israel on Sunday, forcing much of the country to take cover and highlighting a shortage of bomb shelters in the country. The Israeli ambulance service said at least nine people were killed after a missile strike in Beit Shemesh, a city about 18 miles west of Jerusalem.

  • U.S. Congress Weighs In: After the attack, Democrats and a few Republicans escalated their calls for swift votes on whether to curb Trump’s power to continue using force against Iran without explicit authorization.

  • Iranian Americans Find Hope: Some Californians of Iranian descent said they welcomed the possible end of an oppressive government in Tehran that their families had fled.

  • World Reacts: Global leaders urged all sides to exercise restraint after the attacks, although some officials backed the campaign. Here’s what other governments are saying.

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A crowd of people, many wearing head coverings. One person cries out while holding a picture of a bearded man.Iranians mourning their supreme leader at a rally in Tehran. Credit…Arash Khamooshi for The New York Times

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https://www.nytimes.com

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‘Super agers’ with great memory have more young brain cells

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Adults whose brains still have strong neuron production seem to have better memory and cognitive function than do those in whom the ability wanes, finds a study published today in Nature. The authors examined brain samples from deceased donors ranging from young adults to ‘super agers’ — people older than 80 with exceptional memory.

They found that young and old adults with healthy cognition generated neurons, a process called neurogenesis, at high levels for their age. The team estimated that the new neurons made up only a small fraction — 0.01% — of those in the hippocampus, a brain region that’s essential for memory. By contrast, in people experiencing cognitive decline, including individuals with Alzheimer’s disease, neurogenesis seems to falter: the researchers spotted fewer developing, or immature, neurons in those brain samples.

Surprisingly, a group of ‘super agers’ had an even higher number of immature neurons than did other groups, and significantly more than did those with Alzheimer’s. However, the group sizes were small, so the findings were not all statistically significant.

Maura Boldrini Dupont, a neuroscientist and psychiatrist at Columbia University in New York City, says that the small size of the groups — each had ten or fewer individuals — is a reason to take the results with a grain of salt.

Understanding the tools that the brain uses to generate neurons and maintain cognitive function in old age could help researchers to develop drugs that induce neurogenesis in people with cognitive decline, says co-author Orly Lazarov, a neuroscientist at the University of Illinois Chicago.

Controversy over neurogenesis

The findings support the idea that people’s brains continue to generate neurons even in adulthood. But that idea hasn’t always been accepted.

In the early 1900s, neuroscientist Santiago Ramón y Cajal suggested that the human brain could not form neurons after birth. Eventually, researchers found that neurogenesis did occur in childhood, but still thought that was the endpoint.

“That’s what they used to teach when I went to medical school,” Dupont says.

In the past few decades, however, this dogma was challenged by new evidence supporting neurogenesis in the adult hippocampus, fuelling an ongoing debate in neurobiology.

Although researchers know that neurogenesis occurs in some adult animals, including mice and primates, they haven’t been able to agree on whether it happens in the brains of human adults. That’s mainly because there are more tools for studying neurogenesis in animals than in humans. In mice, for instance, researchers can inject chemicals that trace the birth and development of neurons. This cannot be done in living people, and research in human brain samples has been limited, Lazarov says.

One tool researchers have used to study neurogenesis in humans, however, is protein markers. Antibodies can be used to detect certain proteins expressed by neural stem cells — which can turn into neurons — and immature neurons in donated brain samples. But Lazarov points out critics’ argument “that these proteins are not specific enough and could be expressed in other cell types, not just in neurogenesis”.

So scientists have turned to single-cell RNA sequencing to find more specific genetic markers of neural stem cells and immature neurons in the human hippocampus.

Into the future

Lazarov and her colleagues went a step further in their latest study. They not only used RNA sequencing to identify the genetic signatures of these cell types, but also uncovered their epigenetic signatures. Epigenetic markers are DNA modifications that control gene expression. The team used an assay that pinpoints parts of a cell’s DNA that are primed for expression to determine these signatures. Dupont says that the assay is a strong point of the study.

Lazarov says that the next step would be to understand the function of the neurons generated in the adult brain. “What we need is functional validation of these cells, to tell what they’re doing in the human brain,” she says, adding that this would require new imaging techniques that are sensitive enough to detect this activity.

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https://static.scientificamerican.com/dam/m/793bf589271fcb5c/original/GettyImages-483261785.jpg?m=1772202750.401&w=900Svisio/Getty Images

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Click the link below for the complete article:

https://www.scientificamerican.com/article/super-agers-with-great-memory-have-more-young-brain-cells/

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Women Are Scared And Scrapping Their Baby Plans Under This Administration & For Good Reason

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I knew it would be bad, I just didn’t know it would all happen so fast,” Hannah Baker*, a 32-year-old mother of one in the southeastern United States, tells me. “I had already made up my mind back in the summer that if he got elected, we were a one-and-done family. I think my partner was hoping I’d change my mind or that things wouldn’t be as bad as they are, but nope. We’re done.”

Baker’s not alone. And while U.S. fertility rates have been dropping for years, and cultural pressure around having a family has fortunately lessened, studies show that much of the declining birth rate can be attributed to the lack of infrastructure that makes it possible for families to grow. A recent Pew Research study found that 26% of parents under 40 cite financial reasons for not having more children, and a Gallup study found that many American families have less children than they actually want. A study at the Institute for Population Research found that while the birth rate has nosedived, Americans’ desire for children has stayed more or less the same. It’s simply less feasible.

In the time since Baker and I last spoke, the government website reproductiverights.gov went dark. An executive order removed more than 200 pages from Head Start, the federal program for low-income children, including videos on postpartum depression. The United States has been removed from the world’s main climate pact. Remote work for federal employees — a lifeline for working mothers — has all but been eliminated. There is no “family leave plan” on the table. There’s no federally protected right to abortion. There’s no hope for the climate and the state of the planet. There’s no comfort for LGBTQ communities, for transgender people, for pregnant people.

“I don’t want to die trying to have another baby. I don’t want to leave my own living child motherless.”

So as much as Baker says she’d like to give her son a sibling, she just doesn’t feel ready, not in this political climate. It doesn’t feel safe. “For me, I just want to be sure I can take care of him. And with everything going on, I’m just terrified. Like what if he’s gay? What if I lose my remote work job? What if groceries stay so expensive?”

Some women cite the terminology in abortion laws — as some state’s abortion restrictions are blamed for the completely avoidable deaths of women like 28-year-old Amber Thurman in Georgia — as a reason why they’re changing their family plans.

Theresa Parks* lives in a blue state with one child — but she’s suffered several miscarriages. “I’ve always had to have a D&C,” she tells me. “I want more children, but I’m terrified of experiencing another miscarriage and being left to go septic or something if they completely ban abortion.” She feels “somewhat safe” in her blue state, she says, but she doesn’t trust the government or any of the pundits who say abortion is really just a states’ rights issue. “I don’t want to die trying to have another baby. I don’t want to leave my own living child motherless.”

Baker’s not alone. And while U.S. fertility rates have been dropping for years, and cultural pressure around having a family has fortunately lessened, studies show that much of the declining birth rate can be attributed to the lack of infrastructure that makes it possible for families to grow. A recent Pew Research study found that 26% of parents under 40 cite financial reasons for not having more children, and a Gallup study found that many American families have less children than they actually want. A study at the Institute for Population Research found that while the birth rate has nosedived, Americans’ desire for children has stayed more or less the same. It’s simply less feasible.

 

Dr. Kecia Gaither, M.D., a double board-certified physician in OB-GYN and maternal fetal medicine, is the director of perinatal services/maternal fetal health medicine at NYC Health + Hospitals. When I spoke to her in November, before Trump was officially sworn in as president, I’d hoped she’d beam a light of hope down and declare all of our fears unfounded. This did not happen. “Reproductive health and equity has taken a major hit in the wake of the Roe v. Wade reversal. In light of that ruling, many states have banned the election of pregnancy terminations, forcing women — and the physicians who care for them — to face difficult and, many times, life-threatening situations. For my colleagues in certain parts of the country, they have been witness to their health care compatriot being threatened, coerced, and even jailed for rendering care — even in the face of their patients facing life-threatening pregnancy complications,” she tells me. “The incoming administration’s agenda, via Project 2025, apparently will end access to medical abortion, curtail birth control access, allow health facilities to deny particular emergency saving care, and establish an abortion surveillance system… to name just a few.”

Julia Mazer, a Georgia mom of a toddler, was nine weeks pregnant on Election Day 2024 with what she described as “hopefully” her second child. “I have lost pregnancies before, so I know that a pregnancy doesn’t always guarantee a baby. I think we would have stopped trying to conceive if I wasn’t already pregnant before the election,” she tells me. “The biggest change this time is that I am more afraid for my life than I was before. I have been pouncing on news articles about Josseli Barnica and others who died during miscarriage due to abortion bans. I Googled which states have bans and what the term limits are in case I need to travel out of state for abortion care — if there’s time.” Mazer says that she’s always been pro-choice, and that she can’t imagine feeling all of these debilitating pregnancy symptoms while also worrying about an abusive or absent co-parent, food insecurity, anything. “It makes me feel so privileged. I don’t know what will happen, but I do know that this pregnancy will be our last.”

Maddison Z was living in Charlotte, North Carolina, when she gave birth to her first son in early 2023. She had just moved from NYC. “I was really early in my pregnancy when Roe was overturned. It felt so heavy and scary. But I was thankfully living somewhere where I had access to the health care I needed. In July of 2024, when our son turned 18 months old, my husband and I were discussing trying for another baby. In order to feel comfortable, I knew I needed to live in a state that granted me access to all health care. If something were to happen during a pregnancy that put my life at risk, I needed to be able to choose my life, and the life of my son, who needs me,” she told me before the election.

Since then, Maddison’s ideas about having another child have have shifted: “We wonder if it is even ethical to bring another child into this world, knowing the negative impact this current administration will have on the environment, social issues, and the economy,” she says.

Lauren Hughes* in Michigan tells me she’s terrified to have a baby if Trump’s Supreme Court overturns same-sex marriage. “It’s already an ordeal to make sure my wife is listed on the birth certificate, even if we use her egg. She has to adopt her own child, basically. What if they take away our marriage?”

“The biggest change this time is that I am more afraid for my life than I was before.”

Megan Buck, 32, in Atlanta, agrees. “Me and my wife were considering IVF last year. We both want kids and went through a bunch of testing to see if we could. We went to baby sections of stores just to daydream; it was amazing. But now with the political animosity towards our community, it’s scary.” Buck has an autoimmune disorder and also worries about the laws surrounding abortions. “Not only are there health risks associated with me having a baby, but with the attack on trans rights, it seems like only a matter of time before they come for more in our community. The last thing I’d want to happen is for everything to go well and then have complications with my wife having rights to our baby because we’re two women.”

Baker’s not alone. And while U.S. fertility rates have been dropping for years, and cultural pressure around having a family has fortunately lessened, studies show that much of the declining birth rate can be attributed to the lack of infrastructure that makes it possible for families to grow. A recent Pew Research study found that 26% of parents under 40 cite financial reasons for not having more children, and a Gallup study found that many American families have less children than they actually want. A study at the Institute for Population Research found that while the birth rate has nosedived, Americans’ desire for children has stayed more or less the same. It’s simply less feasible.

In the time since Baker and I last spoke, the government website reproductiverights.gov went dark. An executive order removed more than 200 pages from Head Start, the federal program for low-income children, including videos on postpartum depression. The United States has been removed from the world’s main climate pact. Remote work for federal employees — a lifeline for working mothers — has all but been eliminated. There is no “family leave plan” on the table. There’s no federally protected right to abortion. There’s no hope for the climate and the state of the planet. There’s no comfort for LGBTQ communities, for transgender people, for pregnant people.

“I don’t want to die trying to have another baby. I don’t want to leave my own living child motherless.”

So as much as Baker says she’d like to give her son a sibling, she just doesn’t feel ready, not in this political climate. It doesn’t feel safe. “For me, I just want to be sure I can take care of him. And with everything going on, I’m just terrified. Like, what if he’s gay? What if I lose my remote work job? What if groceries stay so expensive?”

Some women cite the terminology in abortion laws — as some state’s abortion restrictions are blamed for the completely avoidable deaths of women like 28-year-old Amber Thurman in Georgia — as a reason why they’re changing their family plans.

Theresa Parks* lives in a blue state with one child — but she’s suffered several miscarriages. “I’ve always had to have a D&C,” she tells me. “I want more children, but I’m terrified of experiencing another miscarriage and being left to go septic or something if they completely ban abortion.” She feels “somewhat safe” in her blue state, she says, but she doesn’t trust the government or any of the pundits who say abortion is really just a states’ rights issue. “I don’t want to die trying to have another baby. I don’t want to leave my own living child motherless.”

Dr. Kecia Gaither, M.D., a double board-certified physician in OB-GYN and maternal fetal medicine, is the director of perinatal services/maternal fetal health medicine at NYC Health + Hospitals. When I spoke to her in November, before Trump was officially sworn in as president, I’d hoped she’d beam a light of hope down and declare all of our fears unfounded. This did not happen. “Reproductive health and equity has taken a major hit in the wake of the Roe v. Wade reversal. In light of that ruling, many states have banned the election of pregnancy terminations, forcing women — and the physicians who care for them — to face difficult and, many times, life-threatening situations. For my colleagues in certain parts of the country, they have been witness to their health care compatriot being threatened, coerced, and even jailed for rendering care — even in the face of their patients facing life-threatening pregnancy complications,” she tells me. “The incoming administration’s agenda, via Project 2025, apparently will end access to medical abortion, curtail birth control access, allow health facilities to deny particular emergency saving care, and establish an abortion surveillance system… to name just a few.”

Julia Mazer, a Georgia mom of a toddler, was nine weeks pregnant on Election Day 2024 with what she described as “hopefully” her second child. “I have lost pregnancies before, so I know that a pregnancy doesn’t always guarantee a baby. I think we would have stopped trying to conceive if I wasn’t already pregnant before the election,” she tells me. “The biggest change this time is that I am more afraid for my life than I was before. I have been pouncing on news articles about Josseli Barnica and others who died during miscarriage due to abortion bans. I Googled which states have bans and what the term limits are in case I need to travel out of state for abortion care — if there’s time.” Mazer says that she’s always been pro-choice, and that she can’t imagine feeling all of these debilitating pregnancy symptoms while also worrying about an abusive or absent co-parent, food insecurity, anything. “It makes me feel so privileged. I don’t know what will happen, but I do know that this pregnancy will be our last.”

Maddison Z was living in Charlotte, North Carolina, when she gave birth to her first son in early 2023. She had just moved from NYC. “I was really early in my pregnancy when Roe was overturned. It felt so heavy and scary. But I was thankfully living somewhere where I had access to the health care I needed. In July of 2024, when our son turned 18 months old, my husband and I were discussing trying for another baby. In order to feel comfortable, I knew I needed to live in a state that granted me access to all health care. If something were to happen during a pregnancy that put my life at risk, I needed to be able to choose my life, and the life of my son, who needs me,” she told me before the election.

Since then, Maddison’s ideas about having another child have have shifted: “We wonder if it is even ethical to bring another child into this world, knowing the negative impact this current administration will have on the environment, social issues, and the economy,” she says.

Lauren Hughes* in Michigan tells me she’s terrified to have a baby if Trump’s Supreme Court overturns same-sex marriage. “It’s already an ordeal to make sure my wife is listed on the birth certificate, even if we use her egg. She has to adopt her own child, basically. What if they take away our marriage?”

Baker’s not alone. And while U.S. fertility rates have been dropping for years, and cultural pressure around having a family has fortunately lessened, studies show that much of the declining birth rate can be attributed to the lack of infrastructure that makes it possible for families to grow. A recent Pew Research study found that 26% of parents under 40 cite financial reasons for not having more children, and a Gallup study found that many American families have less children than they actually want. A study at the Institute for Population Research found that while the birth rate has nosedived, Americans’ desire for children has stayed more or less the same. It’s simply less feasible.

In the time since Baker and I last spoke, the government website reproductiverights.gov went dark. An executive order removed more than 200 pages from Head Start, the federal program for low-income children, including videos on postpartum depression. The United States has been removed from the world’s main climate pact. Remote work for federal employees — a lifeline for working mothers — has all but been eliminated. There is no “family leave plan” on the table. There’s no federally protected right to abortion. There’s no hope for the climate and the state of the planet. There’s no comfort for LGBTQ communities, for transgender people, for pregnant people.

“I don’t want to die trying to have another baby. I don’t want to leave my own living child motherless.”

So as much as Baker says she’d like to give her son a sibling, she just doesn’t feel ready, not in this political climate. It doesn’t feel safe. “For me, I just want to be sure I can take care of him. And with everything going on, I’m just terrified. Like, what if he’s gay? What if I lose my remote work job? What if groceries stay so expensive?”

Some women cite the terminology in abortion laws — as some state’s abortion restrictions are blamed for the completely avoidable deaths of women like 28-year-old Amber Thurman in Georgia — as a reason why they’re changing their family plans.

Theresa Parks* lives in a blue state with one child — but she’s suffered several miscarriages. “I’ve always had to have a D&C,” she tells me. “I want more children, but I’m terrified of experiencing another miscarriage and being left to go septic or something if they completely ban abortion.” She feels “somewhat safe” in her blue state, she says, but she doesn’t trust the government or any of the pundits who say abortion is really just a states’ rights issue. “I don’t want to die trying to have another baby. I don’t want to leave my own living child motherless.”

Dr. Kecia Gaither, M.D., a double board-certified physician in OB-GYN and maternal fetal medicine, is the director of perinatal services/maternal fetal health medicine at NYC Health + Hospitals. When I spoke to her in November, before Trump was officially sworn in as president, I’d hoped she’d beam a light of hope down and declare all of our fears unfounded. This did not happen. “Reproductive health and equity has taken a major hit in the wake of the Roe v. Wade reversal. In light of that ruling, many states have banned the election of pregnancy terminations, forcing women — and the physicians who care for them — to face difficult and, many times, life-threatening situations. For my colleagues in certain parts of the country, they have been witness to their health care compatriot being threatened, coerced, and even jailed for rendering care — even in the face of their patients facing life-threatening pregnancy complications,” she tells me. “The incoming administration’s agenda, via Project 2025, apparently will end access to medical abortion, curtail birth control access, allow health facilities to deny particular emergency saving care, and establish an abortion surveillance system… to name just a few.”

Julia Mazer, a Georgia mom of a toddler, was nine weeks pregnant on Election Day 2024 with what she described as “hopefully” her second child. “I have lost pregnancies before, so I know that a pregnancy doesn’t always guarantee a baby. I think we would have stopped trying to conceive if I wasn’t already pregnant before the election,” she tells me. “The biggest change this time is that I am more afraid for my life than I was before. I have been pouncing on news articles about Josseli Barnica and others who died during miscarriage due to abortion bans. I Googled which states have bans and what the term limits are in case I need to travel out of state for abortion care — if there’s time.” Mazer says that she’s always been pro-choice, and that she can’t imagine feeling all of these debilitating pregnancy symptoms while also worrying about an abusive or absent co-parent, food insecurity, anything. “It makes me feel so privileged. I don’t know what will happen, but I do know that this pregnancy will be our last.”

Maddison Z was living in Charlotte, North Carolina, when she gave birth to her first son in early 2023. She had just moved from NYC. “I was really early in my pregnancy when Roe was overturned. It felt so heavy and scary. But I was thankfully living somewhere where I had access to the health care I needed. In July of 2024, when our son turned 18 months old, my husband and I were discussing trying for another baby. In order to feel comfortable, I knew I needed to live in a state that granted me access to all health care. If something were to happen during a pregnancy that put my life at risk, I needed to be able to choose my life, and the life of my son, who needs me,” she told me before the election.

Since then, Maddison’s ideas about having another child have have shifted: “We wonder if it is even ethical to bring another child into this world, knowing the negative impact this current administration will have on the environment, social issues, and the economy,” she says.

Lauren Hughes* in Michigan tells me she’s terrified to have a baby if Trump’s Supreme Court overturns same-sex marriage. “It’s already an ordeal to make sure my wife is listed on the birth certificate, even if we use her egg. She has to adopt her own child, basically. What if they take away our marriage?”

“The biggest change this time is that I am more afraid for my life than I was before.”

Megan Buck, 32, in Atlanta, agrees. “Me and my wife were considering IVF last year. We both want kids and went through a bunch of testing to see if we could. We went to baby sections of stores just to daydream; it was amazing. But now with the political animosity towards our community, it’s scary.” Buck has an autoimmune disorder and also worries about the laws surrounding abortions. “Not only are there health risks associated with me having a baby, but with the attack on trans rights, it seems like only a matter of time before they come for more in our community. The last thing I’d want to happen is for everything to go well and then have complications with my wife having rights to our baby because we’re two women.”

Jessica Hernandez* lives in the South and tells me she won’t have any more babies if there’s even a chance of an ICE agent showing up at the hospital while she’s in labor. “Would they take my kid?” she asks.

Miranda Lynch is a birth photographer and around babies and families constantly. She decided a long time ago that she didn’t want children, and after years of debilitating endometriosis, PCOS, and autoimmune disorders that make her periods unbearable, she’s found a solution that works for both her pain and to keep her from getting pregnant: hormonal birth control pills. “Not an IUD, not a shot, not whatever — my pills,” she tells me over the phone. “And if I cannot access my hormonal birth control pills, my life will go back to being unmanageable. So the solution is to have my organs cut out, unfortunately, before it becomes illegal to do so.” Lynch has a hysterectomy scheduled. “I’m also unmarried. I don’t have a husband to sign off on anything. I have to get it done now.”

Lynch is also nervous about this new administration and how its policies may affect the families she works with in the delivery room. “There are going to be a lot more upsetting incidents that I’m witness to. There are going to be more scared parents and fewer just elated and confident ones. It’s going to change. And how does birth worker culture shift into that space?”

Gaither says it’s impossible to gauge how things will go right now until we actually see how the reproductive landscape will look in 2025. But the truth of the matter is that women will die if reproductive rights are not upheld. When I ask Gaither to explain why abortion is health care, she’s succinct. “The question becomes this: if a woman is carrying a baby with a lethal anomaly, or carrying a molar pregnancy, or other obstetric complication that may impact her survival? We need to have options.”

The current Republican Party, who has so desperately tried to claim the title “party of family values,” has made no secret about what they wanted or how they wanted this country to look. Eliminating free lunches at school, insisting that you can just “ask grandparents to help” (when what we really need is free, universal child care), not to mention the prospect of risking our autonomy and our lives in pregnancy, with near-constant dread about the viability of the planet — it all adds up. The prospect of building a family under the current administration is becoming less like the American dream than, for too many people in this country, a potential nightmare.

*Names have been changed for safety reasons.

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“I want more children, but I’m terrified of experiencing another miscarriage and being left to go septic or something if they completely ban abortion.”

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Click the link below for the complete article:

https://www.romper.com/pregnancy/the-families-changing-their-baby-plans-now-that-gestures-broadly

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Live Updates: U.S. and Israel Strike Iran as Trump Calls for Overthrow of Government

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Click the link below the picture for a multitude of updates not included here!

Click the link below the picture

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Here’s the latest.

The United States and Israel attacked Iran on Saturday in a major assault that threatened a broader regional conflict, with President Trump vowing to devastate the country’s military, eliminate its nuclear program, and bring about a change in its government.

Waves of large explosions shook the Iranian capital, Tehran, starting around 9 a.m. local time — 1 a.m. in Washington — and continued into the evening. Witnesses described chaos in the streets as people rushed to seek shelter, find loved ones, or flee the city.

Several residential buildings in Bahrain’s capital Manama were targeted this evening, according to the Gulf kingdom’s Ministry of Interior. “Civil Defense continues with firefighting and rescue operations at the affected sites,” the ministry said in a statement, without elaborating further. Videos being shared on social media on Saturday night, and verified by The New York Times, appeared to show a moving object striking a residential apartment building in the capital Manama, causing a large explosion.

The New York Police Department said it was enhancing its presence at sensitive locations in the city, including at diplomatic and religious sites, in light of the strikes in Iran. Gov. Kathy Hochul said the State Police was taking similar precautions across New York. No specific, credible threats to the city or state have been identified, the governor said.

‘Under this rubble, students are buried’: Iran says dozens killed in strike on school.

Dozens of people, probably most of them children, were killed in a strike that hit a girls’ elementary school in southern Iran, according to Iranian health officials and state media.

It was one of two strikes that appear to have hit schools since U.S. and Israeli warplanes launched their attack on Iran around 10 a.m. local time. Saturday is the start of the workweek in the country, and many Iranians had already dropped off their children and headed into their offices as explosions began to shake the capital and many cities across Iran.

Netanyahu takes his shot at regime change in Iran.

The joint U.S.-Israel attack on Iran is, in one sense, a long-held aspiration for Prime Minister Benjamin Netanyahu of Israel. He has been portraying the Islamic Republic, a sworn enemy of his country, as a singular threat to Israel, the region, and the world for more than three decades.

Now, an emboldened Israel and its strongest ally, the United States, have declared the aim of the war as nothing less than paving the way for the overthrow of Iran’s government by encouraging Iranians to rise up against the Islamic Republic.

The Israeli military published a warning urging those present at an “industrial complex” in Isfahan, a major city in central Iran, to evacuate. It also told residents of a nearby area to remain in their homes until the morning hours.

Hundreds of Shiite Muslims marched in various parts of Pakistan to express their support for Iran. Many Pakistani Shiites, a sizable religious minority in their country, look to Iran for religious guidance and, at times, political support. “When Iran is attacked, we feel our faith, our identity, and our very existence are being targeted,” said Asghar Jaffer, a Shiite student activist in Karachi.

Iranian attacks on Israel shine a light on shelter shortage.

Sirens warning of incoming Iranian missile fire have sent people in Israel running to public and private bomb shelters, and fortified rooms in their homes.

But the missile barrages have also highlighted a shortage of protected spaces in a country that has been preparing for war with Iran for decades.

Several dozen protests opposing the U.S.-led strikes in Iran are planned in cities across the United States as part of a national day of action today. The sponsors of the demonstrations, a coalition of organizations, including Answer Coalition, a group that opposes war and racism, said they were protesting the Trump administration’s “illegal attack” on the country.

“The people of this country reject another endless war,” the sponsors wrote in their call to action.

Mai Sato, a Japanese legal scholar and the U.N. special rapporteur on human rights in Iran, called the U.S.-Israeli strikes “unlawful” because they were launched without authorization from the U.N. Security Council. The Council will convene an emergency meeting later today. She said in a social media post that military intervention is not a solution to the nuclear issue and “does nothing to address why people took to the streets. It is for the Iranian people to shape their own future.”

The Strait of Hormuz, a global shipping lane, has been “effectively closed,” according to Tasnim, the news outlet affiliated with the Iran Revolutionary Guard Corps, or IRGC, the county’s most powerful military force.

“The IRGC has warned various vessels that, due to the insecure conditions around the strait resulting from the U.S. and Israeli military aggression and Iran’s responses, passage through the strait is currently unsafe,” Tasnim quoted the IRGC as saying.

The Israeli military said it struck roughly 500 targets across Iran since this morning, including air defense systems and missile launchers. It said the targets included a surface-to-surface missile launch site in the area of Tabriz, in western Iran. The strikes allowed the Israeli Air Force to “expand its aerial superiority” in Iranian skies, the military added.

The U.S. Maritime Administration, a government agency, has advised American commercial ships to stay away from the Persian Gulf area, including the Strait of Hormuz. “It is recommended that vessels keep clear of this area if possible,” the agency said. Jordan’s Public Security Directorate said it handled 54 reports of falling debris that caused material damage but no injuries.

The Israeli military just said it began another wave of attacks on Iranian aerial defense and missile launches in central Iran. Iran’s state broadcaster, IRIB, is reporting explosions in Garmdareh, west of Tehran, as well as the northwestern city of Urmia near the Turkish border, the southern port city of Bushehr, and Qom, south of Tehran.

The authorities in Dubai said that four people were injured and taken to a hospital after an “incident” in the Palm Jumeirah area, an artificial island off the coast of the city, adding that the site was secure and the resulting fire under control. Videos shared on social media that were verified by The New York Times appeared to show an object landing close to one of the buildings that line the main road of the Palm Jumeirah, causing an explosion. The conflict in the Middle East has quickly threatened the flow of oil out of the Middle East, which could make oil and other fuels more expensive. Oil analysts expect prices to jump when markets open on Sunday evening. Shipping companies have stopped sending their tankers through the Strait of Hormuz, the narrow passage through which at least 20 percent of daily oil production travels, according to oil industry analysts. “Nobody’s going to enter right now,” said Angeliki Frangou, the chief executive of Navios Maritime Partners, a Greek shipping company with vessels in the region, referring to the strait.

The foreign ministry of Saudi Arabia said in a statement that it successfully intercepted Iranian attacks aimed at the Riyadh region and the Eastern Province. The kingdom will “take all necessary measures” to defend itself, “including the option of responding to aggression,” it said.

The White House press secretary, Karoline Leavitt, said on social media that President Trump has spoken on the phone with Prime Minister Benjamin Netanyahu of Israel. She said Trump also monitored the military assault in Iran “overnight at Mar-a-Lago alongside members of his national security team.”

Here’s what members of Congress are saying about the U.S.-led attacks on Iran.

Members of Congress are weighing in on the United States’ attack on Iran, and Republicans and Democrats are significantly at odds.

Republicans largely praised President Trump for what they said was a critical operation targeting a country that had long threatened the United States and its allies. Many circumvented the issue of whether the president needed authorization from Congress to carry out an extended military operation.

Kuwait’s state media said a drone struck the country’s main airport on Saturday, citing the civil aviation authority. It said the drone caused minor injuries to workers at the airport’s Terminal 1 building.

The Emirates defense ministry said on Saturday evening that it had intercepted a “new wave” of Iranian missiles launched toward the country, and that “fragments from the interceptions” had fallen in areas across the cities of Abu Dhabi and Dubai. The defense ministry statement said there were no injuries at those sites. A White House official said the Pentagon notified members of the Armed Service Committees early Saturday morning after the strikes began. Some members of the committees said they were not notified, including Senator Jack Reed, Democrat of Rhode Island and the ranking member of the Senate Armed Services Committee.

Gideon Saar, Israel’s foreign minister, said that military action against Iran was urgently needed “despite the significant risks involved.”

“Delay would have allowed the Iranian regime to reach a level of immunity for its nuclear program, as well as to engage in the mass production of long-range ballistic missiles,” he said in an English-language statement.

In a letter to the U.N. Security Council, Iran’s foreign minister, Abbas Araghchi, asked for the council to intervene and said Israel and the United States had violated international law in attacking Iran. “The United States and the Israeli regime shall bear full and direct responsibility for all ensuing consequences, including any escalation arising from their unlawful actions,” Mr. Araghchi said in the letter. “All bases, facilities, and assets of the hostile forces in the region shall be regarded as legitimate military objectives within the framework of Iran’s lawful exercise of self-defense.”Ursula von der Leyen, the president of the European Union’s executive arm, announced on social media that she would convene a special security update meeting on Monday on the situation in Iran. She said that it is “of the utmost importance that there is no further escalation through Iran’s unjustified attacks on partners in the region.”Prime Minister Keir Starmer of Britain has said in a televised statement that British planes “are in the sky today” in the Middle East “as part of co-ordinated regional defensive operations to protect our people, our interests, and our values.” Mr. Starmer said Iran should refrain from further strikes, give up its weapons program, and end repression of its people, adding: “This is the route back to the negotiating table.”

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Click the link below for the complete article:

https://www.nytimes.com

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Squeak! The surprising new physics of why basketball games are so noisy

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It’s officially squeak season.

The National Collegiate Athletic Association’s March Madness is right around the corner. The National Basketball Association (NBA) is fresh off its All-Star break, with the playoffs on the horizon. The playoffs for the women’s three-on-three league Unrivaled start this weekend—and Angel Reese will be back!

So turn on your TV and pump up the volume. Try tuning out the color commentary, the pulsating music, and the “defense” chants, and what you’ll hear is basketball’s true soundtrack: a symphony of squeaks.

Today, in a study published in the journal Nature, a team of scientists have made a “Wemby”-sized stride forward on the timeless scientific mystery of why basketball sneakers make those joyful noises.

“We were not expecting to find so much richness and depth, from a physics point of view, underneath the sole of a shoe,” says Adel Djellouli, a scientist at Harvard University and co-lead author of the study.

Most scientists who had considered the problem believed that shoe squeaks were a straightforward example of the common “stick-slip phenomenon.”

It’s easy to see stick-slip in action. Just plop a heavy book on a table and try to gently slide it across. Instead of a smooth slide, you’ll get a jerky, stop-and-start kind of motion.

Basketball squeaks, the theory went, were an example of the same phenomenon. When a player stopped on a dime, their shoe’s rubbery sole would slip slightly—many times per second in the same stop-and-start pattern—producing a squeak. This is how violins work and why a squeaky door hinge rings at a lower pitch when you open it slowly.

But with the power of high-speed cameras and acoustic analysis, Djellouli and his co-authors have shown that basketball shoes are special. 

It’s all about the bumps. Those long, raised patterns of ridges that line the bottom of a sneaker are really the maestros of basketball’s soundscape. Watch the bottom of a shoe rubbing against the hardwood in slow motion, and you’ll see.

The sole’s ridges don’t lift and stick all at once. Rather, only a tiny part of each ridge separates from the ground at any one time. That pocket of separation glides down the ridge until it reaches the end of the sole, at which point the air outside the shoe receives a little kick. Those separation waves ripple down the ridges thousands of times per second, kicking the air rhythmically. The rate of kicks is exactly the frequency of the squeak—the faster the kicks, the higher the pitch.

That frequency depends on the shape of each ridge, which guides the waves down with a characteristic speed. “The idea of a waveguide for friction was not known,” says Gabriele Albertini, a structural engineer at the University of Nottingham in England and Djellouli’s co-lead author. To demonstrate their finding, the scientists reverse-engineered rectangular blocks of synthetic sole with distinct pitches. They were even able to play Darth Vader’s theme from Star Wars on a piece of glass. “It took us three days to rehearse,” Djellouli says. “We could have just shown it in a graph, but where’s the fun in that?”

The sneaker study falls under the larger umbrella of “bimaterial friction,” the special physics of two different materials rubbing together. The phenomenon of two different faults slipping against each other to produce an earthquake, for instance, is much like a sneaker rubbing on hardwood. Rather than the entire fault stopping and starting, ripples of separation move along it, similarly to what happens with the sneaker. The team believes its rubber setup could become an easy way to study earthquake physics in a lab.

“This is a more advanced and technically sophisticated analysis of a problem I dipped my toe into 20 years ago,” says Martyn Shorten, a stick-slip expert at BioMechanica, a consulting firm in Oregon. “I love it!”

So next time you see NBA player Shai Gilgeous-Alexander take someone’s ankles, remember that the spectacle’s squeaky score is something to behold as well. And when you cop your favorite player’s new signature shoe, you’re buying a finely tuned musical instrument that simulates an earthquake with every step. Who knows—maybe we’re just a few years off from “signature squeaks!”

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https://static.scientificamerican.com/dam/m/a5cdbf979f35f1f/original/GettyImages-2259281685.jpg?m=1772039825.202&w=900

Every time reigning MVP Shai Gilgeous-Alexander blows by a defender in an NBA game, you’ll hear the unmistakable squeak of basketball sneakers against the hardwood. Physicists now understand where these joyful sounds come from. Joshua Gateley/Getty Images

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US Figure Skater Amber Glenn Faced Hate During 2026 Olympics, and Her Sister Has a Response

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As I cheer on my sister, Amber Glenn, during her first-ever Olympics, I’m so proud of the person and athlete she is. And, of course, with that love comes a fierce desire to protect her from the ugliness and hate I’m seeing online.

Recently, Amber was interviewed by our longtime friend Ashley Cain, the cohost of the Flame Bearers and Culxtured series Making It to Milan, about Amber’s journey to the Games, equity in sports, and her advice for young athletes. I was thrilled to be a part of her episode, too, and talk about what it means to me to see someone I love so much finally get the honor and recognition she deserves.

Amber has always been exceptional. In a sport where longevity often leads to burnout, she has stayed relentlessly devoted to her dream. After more than a decade in international figure skating, three consecutive US national champion titles, and now a gold medal at her very first Olympics, she’s shown the world that she fights for her dreams and doesn’t give up.

The same goes for her beliefs and values. Amber has always been unapologetically exactly who she is. For Amber, being the first out LGBTQ+ woman on a US Olympic figure skating team means more than just a footnote in her bio. She wears the Pride flag pin not for attention or because it’s on trend, but because she’s had to fight to love herself unconditionally, and she wants the same for LGBTQ+ people across the country.

You may be wondering what my sister said to bring on such vicious hatred. When asked at a press conference about her views on Trump’s impact on the LGBTQ+ community, she responded: “It’s been a hard time for the [LGBTQ+] community overall in this administration. It isn’t the first time that we’ve had to come together as a community and try and fight for our human rights.”

She never expressed a lack of respect or a lack of appreciation for this country. She simply spoke about what millions of Americans are living right now, as shown in the more than 400 anti-LGBTQ+ bills that have been introduced in the US so far this year, according to the ACLU. That’s when the hate started pouring in. This isn’t criticism; this is an attempt to strip away someone’s humanity, all because what she’s saying is different and scary to them.

Especially now, as Amber prepares for one of the biggest moments of her career, she should not have to carry the hate she has received while also trying to land her jumps. No athlete should. We say we want people to be authentic, then we recoil when they are. We say athletes are role models, then we demand they stay silent about their own lives. We celebrate them right up until they make us uncomfortable, and then we say they are horrible people.

For me, there was never a question of whether or not I would love and support my sister unconditionally—love doesn’t have strings attached. Neither does allyship. Our parents taught us to treat all people with love and respect, even if we don’t understand where they’re coming from. You don’t have to be LGBTQ+ (or even understand what it means) to agree that people deserve to be who they are, and love who they love, without receiving hate.

Allyship is supposed to be uncomfortable. That’s kind of the point. It gives us just a taste of what the people we care about deal with day in and day out. If it makes us feel overwhelmed, we can imagine how they must feel all the time. Through the years, I’ve seen the beautiful and terrifying sides of people reflected through sports. I’ve seen how sports can bring people together across divides, and how groups and platforms like Flame Bearers champion women exactly as they are. I’ve also seen the way that people use sport as a space to promote bigotry, declaring that there’s only one way to be an athlete, a woman, an American.

When I see my sister with her teammates, beaming with pride, I think of the good in sports. Beyond any medal, seeing my sister happy is the greatest victory. Seeing all the positive comments in Flame Bearers’ feed reminds me that there are other people out there who celebrate diversity and lead with compassion. I’m going to keep looking toward the light, and doing all I can to outshine the dark.

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https://assets.teenvogue.com/photos/69976b73ca42263caa8c15dc/16:9/w_1600,c_limit/2262519365Jamie Squire/Getty Images

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https://www.teenvogue.com/story/us-figure-skater-amber-glenn-faced-hate-during-2026-olympics-sister-response

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Pentagon Standoff Is a Decisive Moment for How A.I. Will Be Used in War

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The fight between the Department of Defense and the artificial intelligence company Anthropic has ostensibly been about a $200 million contract over the use of A.I. in classified systems.

But as the two sides careen toward a 5:01 p.m. Friday deadline over terms of the contract, far more is at stake.

Amid the legalese and heated rhetoric are questions being asked globally about how to use A.I., what the technology’s risks are, and who gets to decide on setting any limits — the makers of A.I. or national governments.

Underlying it all is fear and awe over the dizzying pace of A.I. progress and the technology’s uncertain impact on society.

“Something like this dispute was inevitable,” said Michael C. Horowitz, who worked on A.I. weapons issues in the Defense Department during the Biden administration. “Because the technology is advancing so quickly, we’re having these debates now. A.I. has moved from being in a niche conversation to something really at the center of global power.”

An hour before the deadline on Friday, President Trump weighed in on the fight, posting on social media that he would “NEVER ALLOW A RADICAL LEFT, WOKE COMPANY TO DICTATE HOW OUR GREAT MILITARY FIGHTS AND WINS WARS!” That decision, he said, “belongs to YOUR COMMANDER-IN-CHIEF, and the tremendous leaders I appoint to run our Military.”

The clash centers on the Pentagon’s use of a classified version of Anthropic’s A.I. model, Claude. The company wants to embed safeguards in its technology to prevent its use for mass domestic surveillance of Americans or in fully autonomous weapons with no humans in the loop.

The Pentagon has said that it has no plans to use the technology for those purposes, but that a private contractor cannot decide how its tools will be lawfully used for national security, just as a weapons manufacturer does not determine where its missiles are dropped.

At the Pentagon, the dispute comes at an important moment. Defense Secretary Pete Hegseth, the former Fox News contributor who has lashed out at policies and companies he sees as too liberal, wants to aggressively integrate A.I. in war planning and weapons development. Mr. Hegseth is echoing Mr. Trump, who has made the expansion of A.I. a cornerstone of his policies.

But Anthropic, a five-year-old company worth about $380 billion, has staked its reputation on A.I. safety and raised concerns about the technology’s dangers, even as it has collaborated with U.S. defense and intelligence agencies. It is the only A.I. company currently operating on the Pentagon’s classified systems.

In recent days, the Pentagon and Anthropic have showed no signs of backing down. Sean Parnell, the Pentagon spokesman, posted on social media on Thursday that the Pentagon demanded that Anthropic allow it to use A.I. “for all lawful purposes,” saying it was a “common-sense request.”

In response, Dario Amodei, Anthropic’s chief executive, said the Pentagon’s “threats do not change our position: we cannot in good conscience accede to their request.” Anthropic was prepared to lose its government contract and help the Pentagon transition to another company’s technology, he said.

Without a compromise, Mr. Hegseth has threatened to invoke the rarely used Defense Production Act to force Anthropic to work with it on its terms, or designate the company a supply chain threat and block it from doing business with the government.

The confrontation has created new divisions between Silicon Valley and Washington at a moment when the industry seemed in step with President Trump’s tech-forward agenda, especially as Google, xAI, and OpenAI are also involved in A.I. work with the Pentagon.

On Thursday, nearly 50 OpenAI employees and 175 Google employees published a letter calling on their leaders to “refuse the Department of War’s current demands.” More than 100 employees who work on Google’s A.I. technology expressed concern in another letter to company leaders about working with the Pentagon. Prominent technologists, including Jeff Dean, a top Google executive, have also said they are concerned about how A.I. can be misused for surveillance.

(The New York Times has sued OpenAI and Microsoft, accusing them of copyright infringement of news content related to A.I. systems. The companies have denied those claims.)

A little over two years ago, A.I. safety and regulation was a top concern. At a global summit hosted in Britain by then Prime Minister Rishi Sunak, the United States, China, and 26 other countries signed a pledge to address some of the technology’s potential risks, such as giving hackers new attack methods and accelerating disinformation.

But as the A.I. race ramped up, the issue has faded as a priority. Last year, the Trump administration revoked safety policies imposed under President Biden. Mr. Trump signed an executive order in December aimed at undercutting state laws that regulate A.I. He has also lifted restrictions on exports of A.I. semiconductors, despite concerns that the components could help rivals like China.

The European Union, which passed far-reaching A.I. regulations in 2024, is now considering rolling some back. At the United Nations, a yearslong effort to ban certain A.I. weapons has been stalled by opposition from the United States, Russia, and other countries.

On the battlefield, the war in Ukraine has ushered in an era of drone warfare that turned autonomous weapons from a futuristic possibility to a near-term reality.

“As A.I. becomes more powerful and more capable, the incentives to use it also become much stronger,” said Helen Toner, an A.I. policy expert at Georgetown University and former OpenAI board member. “At the same time, people’s appetite to talk about risks and how to solve them has gone down.”

Ms. Toner said the Anthropic-Pentagon dispute showed a fundamental disconnect. In Washington, officials view A.I. as a new tool that can be harnessed for specific goals. In Silicon Valley, creators of the technology see it becoming more like an “entity” with sophisticated reasoning that may behave in unexpected and dangerous ways without oversight and refinement, she said.

The fight between the Pentagon and Anthropic began on Jan. 9, when Mr. Hegseth published a memo calling for A.I. companies to remove restrictions on their technologies.

“The time is now to accelerate A.I. integration, and we will put the full weight of the Department’s leadership, resources, and expanding corps of private sector partners into accelerating America’s Military A.I. Dominance,” he wrote.

Underpinning Mr. Hegseth’s strategy was a fundamental shift in military technology. Hardware is in an age of decline. Military contractors have struggled to deliver ships and fighter planes on time and on budget.

Software has become an increasingly powerful tool. Tech executives, including Alex Karp, the chief executive of the data analytics company Palantir, which works closely with the federal government, have argued that America’s competitive edge over adversaries will be found in its advances with software.

Anthropic has been a willing partner, providing the government with a special version of Claude that has fewer restrictions. Yet some in the Pentagon viewed the start-up with suspicion. Its openness to talking about safety risks put off some in the department’s leadership, who have called the San Francisco company “woke.”

When talks between the Pentagon and Anthropic began over a $200 million contract for use of A.I. in classified systems, lawyers from both sides quietly traded emails over contract language, said two people involved in the discussions.

Anthropic asked for two things. The company said it was willing to loosen its restrictions on the technology, but wanted guardrails to stop its A.I. from being used for mass surveillance of Americans or deployed in autonomous weapons with no humans involved. Without those, Anthropic risks damaging its safety-first reputation.

“This is really about the power of the state to determine how A.I. is being deployed in the world versus companies,” said Robert Trager, co-director of Oxford University’s Martin A.I. Governance Initiative.

Cordula Droege, the chief lawyer for the International Committee of the Red Cross, which has called for global limits on A.I. weapons, said the violent risks of introducing swarms of autonomous weapons on battlefields is being lost in the wider debate.

“Throughout history, warfare goes in parallel with the development of technology,” she said.

The Latest on the Trump Administration


  • Inquiry of Ex-Officials: A U.S. attorney in Miami is said to be expanding the scope of an investigation into former officials involved in scrutinizing Trump during his first campaign and term.

  • Downed Drone: The U.S. shot down a drone belonging to the Homeland Security Department over a Texas border town, prompting the F.A.A. to shutter nearby airspace, according to four people familiar with what transpired.

  • Iran: As they made their public case for another U.S. attack, President Trump and his aides made claims about Iran’s weapons and nuclear program that were either false or unproven.

  • Voter Data: The Trump administration sued five states to obtain unredacted voter registration databases, in pursuit of baseless claims of voter fraud.

  • Sanctions Against U.N. Official: The family of a U.N. expert on the Israeli-occupied Palestinian territories sued Trump and top officials, challenging sanctions imposed against her over her views of the war in Gaza.

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https://static01.nyt.com/images/2026/02/27/multimedia/27biz-ai-military-pentagon-fthp/27biz-ai-military-pentagon-fthp-superJumbo.jpg?quality=75&auto=webpThe Pentagon has said that a private contractor cannot decide how its tools will be lawfully used for national security. Credit…Tierney L. Cross/The New York Times

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Heart disease in young women projected to rise sharply by 2050

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Heart disease is the top cause of death for women in the U.S.; it kills more of them than all forms of cancer combined. But the unique signs and symptoms of heart disease in women are more likely go undetected and untreated than those in men.

The dangers heart disease poses to women may be about to get worse, according to a new analysis. Based on national data between 2010 to 2020, researchers project that, by 2050, the prevalence of serious cardiovascular disease and stroke in women in the U.S. will rise from 10.7 percent to 14.4 percent—affecting more than 22 million people. And that’s not counting high blood pressure.

The study, published today in Circulation, also shows an alarming uptick of disease in younger women: nearly a third of all women between age 20 and 44 will be diagnosed with some form of cardiovascular disease by 2050.

Bar charts show projected changes in prevalence of cardiovascular diseases among U.S. women, by age and race or ethnicity, from 2020 to 2050.

Amanda Montañez; Source: “Forecasting the Burden of Cardiovascular Disease and Stroke in Women in the United States through 2050: A Scientific Statement from the American Heart Association,” by Karen E. Joynt et al., in Circulation, Vol. 153. Published online February 25, 2026 (data)

The projection is “really a wake-up call,” says Karen Joynt Maddox, lead author of the study and a cardiologist at Washington University in St. Louis. She is also vice chair of the Council on Quality of Care and Outcomes Research at the American Heart Association, which publishes these forecasts every year.

“Despite all of our amazing advances in treating cardiovascular disease, we have not made many advances in preventing the disease. And in fact, the projections would suggest that we’re doing worse and worse in preventing the cardiovascular risk factors,” she says.

The estimates represent a setback in the fight against cardiovascular disease, says C. Noel Bairey Merz, a cardiologist at Cedars-Sinai Medical Center in Los Angeles, who was not involved in the study.

“We had this idea that maybe by the end of this century, cardiovascular disease would be a rare condition,” Bairey Merz says. “Up until 2010, we had gotten cardiovascular disease down to one in four women, and now we’re back to one in three. It’s a sad reality.”

Hypertension—a form of high blood pressure that is an early risk factor of heart disease—could spike, according to the projections. Nearly 60 percent of women will have high blood pressure by 2050—up from 50 percent in 2020. And the rates of numerous cardiovascular conditions, such as coronary disease, heart failure, stroke and atrial fibrillation could all rise slightly, according to the study. By 2050, the prevalence of diabetes could increase by 10 percent, while that of obesity may increase by about 17 percent. Similar trends were observed in girls aged two to 19, with obesity predicted to increase from 19.6 percent to 32 percent by 2050.

“Cardiovascular disease is a life course disease. We can see risk factors start in childhood,” Joynt Maddox says. “I worry a lot about the increases that we’re projecting in young people, about setting people up for having heart problems when they’re in their 30s and 40s and 50s instead of their 60s and 70s and 80s.”

Bar charts show projected changes in prevalence of high blood pressure, obesity, high cholesterol and diabetes among U.S. women from 2020 to 2050.

Amanda Montañez; Source: “Forecasting the Burden of Cardiovascular Disease and Stroke in Women in the United States through 2050: A Scientific Statement from the American Heart Association,” by Karen E. Joynt et al.,

Older women have a higher prevalence of disease, but cardiovascular risk factors are high and rising in younger groups. Those two trends could feed each other in a vicious cycle, Joynt Maddox explains. As women age, they might experience greater rates of cardiovascular disease associated with a prior heart or metabolic issue. People with a past history of stroke and heart attacks are more likely to die from heart failure years later.

Similar trends could be seen in men, Joynt Maddox says. “It’s not that women are uniquely experiencing the increase in obesity or high blood pressure, but there are additional layers on top of that,” she adds.

Part of the reason why women may be at particular risk could relate to the significant hormonal changes they experience throughout life, including during menstruation, pregnancy and menopause, Joynt Maddox says. Determining how these life events affect heart health will require more research, but these are “issues that we can definitely build upon,” Bairey Merz says.

Socioeconomic and demographic factors also affect outcomes. For example, Black women have the highest incidence of high blood pressure, obesity and diabetes, which are all cardiovascular disease risk factors, and this is expected to still be the case in 2050. They could also see the gr

eatest jumps in heart failure and stroke, according to the new predictions.

“The double whammy is these intersectionalities—you’re Black or brown, and you live in a rural or underserved area, and you have absolutely no access to health care or insurance,” Bairey Merz says.

These racial health disparities are well documented, but the new forecast underscores the need for better prevention measures and health care policies, Joynt Maddox says. New glucagonlike peptide 1 (GLP-1) drugs, for example, could help mitigate rates of cardiovascular disease and obesity. How much GLP-1 drugs will do this “is an enormous unanswered question,” says Joynt Maddox, adding that the data the projections are based on do not fully overlap with the rise in GLP-1 drugs. “But I’m optimistic that it’s going to be part of helping us bend the curve.”

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https://static.scientificamerican.com/dam/m/511fbe93254d7731/original/GettyImages-2261207901_heart.jpg?m=1772028485.505&w=900KATERYNA KON/SCIENCE PHOTO LIBRARY/Getty Images

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