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The Secret Microscope That Sparked a Scientific Revolution

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On September 7, 1674, Antonie Van Leeuwenhoek, a fabric seller living just south of The Hague, Netherlands, burst forth from scientific obscurity with a letter to London’s Royal Society detailing an astonishing discovery. While he was examining algae from a nearby lake through his homemade microscope, a creature “with green and very glittering little scales,” which he estimated to be a thousand times smaller than a mite, had darted across his vision.

Two years later, on October 9, 1676, he followed up with another report so extraordinary that microbiologists today refer to it simply as “Letter 18”: Van Leeuwenhoek (lay-u-when-hoke) had looked everywhere and found what he called animalcules (Latin for “little animals”) in everything.

He found them in the bellies of other animals, his food, his own mouth, and other people’s mouths. When he noticed a set of remarkably rancid teeth, he asked the owner for a sample of his plaque, put it beneath his lens, and witnessed “an inconceivably great number of little animalcules” moving “so nimbly among one another, that the whole stuff seemed alive.” After a particularly uncomfortable evening, which he blamed on a fatty meal of hot smoked beef, he examined his own stool beneath his lens and saw animalcules that were “somewhat longer than broad, and their belly, which was flat-like, furnished with sundry little paws”—a clear description of what we now know as the parasite giardia.

With his observations of these fast, fat, and sundry-pawed creatures, Van Leeuwenhoek became the first person to ever see a microorganism—a discovery of almost incalculable significance to human health and our understanding of life on this planet.

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Illustration: Ariel Davis

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Click the link below for article:

https://www.wired.com/story/secret-microscope-sparked-scientific-revolution/?utm_source=pocket_discover_science

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These colleges promise no student debt: ‘Loans are not part of the deal’

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Increasingly, college is an option only for those who can afford it or are willing to take on massive student debt. But not all schools see it that way.

To make higher education more accessible, a growing number of institutions are eliminating student loans altogether. 

More than 20 schools now have “no-loan” policies, which means they will meet 100% of the undergraduate’s need for financial aid — without education debt.

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Click the link below for the article:

https://www.cnbc.com/2022/10/12/these-colleges-promise-no-student-loans.html?utm_source=pocket_discover_education

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Energy jet traveling 7 times the speed of light appears to break the laws of physics

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Astronomers have detected a gargantuan blast of energy from space that appears to be doing the impossible: Traveling seven times faster than the speed of light.

This is, of course, an optical illusion — a rare and mind-boggling phenomenon called superluminal motion, which occurs when particles come very close to moving at the speed of light. In this case, scientists detected a jet of energy blasting out of a stellar collision site at a staggering 99.97% of the speed of light — about 670 million mph (1.07 billion km/h), according to a study published Oct. 12 in the journal Nature (opens in new tab).

The jet in question is the result of a cosmic cataclysm that first made waves in the scientific community in 2017. That year, scientists detected a violent collision between two neutron stars — ultra-dense, collapsed star cores that pack a sun’s-worth of mass into a ball no wider than a city — located roughly 140 million light-years from Earth. The collision was so powerful it created ripples in the fabric of space-time; such disturbances are known as gravitational waves.

Albert Einstein predicted the existence of these space-time ripples in 1916, and it took scientists 100 years to find the evidence to prove it, following a collision between two black holes that was detected in 2016. The gravitational waves released by the colliding neutron stars in 2017 — a signal named GW17081 — were the first to be detected from a source other than black holes, proving that more than one type of cosmic catastrophe is capable of creating them.

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https://cdn.mos.cms.futurecdn.net/mKdgKydhjPxMoggHUvT84e-970-80.jpg.webpA jet of particles blasts out of a black hole at near-light-speed. A similar jet was just detected from a pair of colliding neutron stars, seemingly breaking the laws of physics. (Image credit: NASA Goddard)

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Click the link below for the article:

https://www.livescience.com/cosmic-jet-breaks-light-speed?utm_source=pocket_discover_science

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A high school student’s mural angers parents over what they say are hidden messages

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School district officials and a high school student in Michigan have drawn the ire of parents who allege that a painted mural contains LGBTQ propaganda, a depiction of Satan, and a message of witchcraft.

The painting covers a wall inside a teen health center at Grant Middle School in Grant, Mich., and was created by a local high school sophomore who won a competition.

The mural features caped characters, bunny- and bear-headed nurses, and smiling students dressed in brightly colored outfits. One student is wearing a blue T-shirt with pink and white stripes — colors found on the transgender flag. Another student is outfitted in shorts overalls with a rainbow-striped T-shirt and tights underneath. Parents have said that the rainbow stripes represent the colors of the pride flag. Two other students are dressed in tops with colors of the bisexual flag — pink on the top, royal blue on the bottom, and an overlapping purple stripe in the middle.

Among the drawings of the students, the artist added multiple smaller line drawings, including a mask, which some parents have complained is Satan, and a hamsa hand, which is considered a symbol for the hand of God in many cultures, but in this case, some adults have claimed it is a symbol of witchcraft. The mask and hand are both design elements that were not included in the artist’s original contest submission.

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https://media.npr.org/assets/img/2022/10/19/grant-mural-d09a8bc97c869888b75ad3fc67dd463ceda06a18-s800-c85.webp

This mural is on the wall of the Child and Adolescent Health Center at Grant Middle School in Michigan. Child and Adolescent Health Center, Grant Middle School

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Click the link below for the article:

https://www.npr.org/2022/10/20/1129786060/student-school-mural-angers-parents-hidden-messages-michigan-lgbtq-satan?utm_source=pocket_discover_education

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The College-Admissions Merit Myth

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Tomorrow, the Supreme Court will hear oral arguments in two cases that could end America’s experiment with affirmative action in higher education. The challenges to the admissions programs at Harvard and at the University of North Carolina at Chapel Hill—both brought by Students for Fair Admissions, a coalition of unnamed students assembled by the conservative legal strategist Edward Blum—argue that the institutions discriminate against Asian American students and that eliminating the use of race in admissions would fix the problem.

Lower courts have rejected SFFA’s arguments, leaning on more than 40 years of precedent that says the use of race in admissions is permissible in narrow circumstances. “Harvard has demonstrated that no workable and available race-neutral alternatives would allow it to achieve a diverse student body while still maintaining its standards for academic excellence,” Judge Allison Burroughs wrote in her 2019 opinion. But SFFA pressed on, and now the case sits before a conservative Supreme Court that has shown a willingness to overturn well-established precedents.

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https://cdn.theatlantic.com/thumbor/5P8gkvRVb2OA-cZ_aphKK6fKc_Y=/0x0:4800x2700/960x540/media/img/mt/2022/10/QA_natasha_warikoo_college/original.jpgTristan Spinski / NYT / Redux; The Atlantic

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Click the link below for article:

https://www.theatlantic.com/politics/archive/2022/10/supreme-court-affirmative-action-harvard-unc-case-natasha-warikoo-book/671921/

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A brain expert shares his 7 ‘hard rules’ for boosting memory and fighting off dementia

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The average human brain shrinks by approximately 5% per decade after the age of 40. This can have a major impact on memory and focus.

What’s more, brain disorders are on the rise. In 2020, 54 million people worldwide had Alzheimer’s disease or other dementias, and that number is expected to grow.

But serious mental decline doesn’t have to be an inevitable part of aging. In fact, certain lifestyle factors have a greater impact than your genes do on whether you’ll develop memory-related diseases.

As a neuroscience researcher, here are seven hard rules I live by to keep my brain sharp and fight off dementia.

1. Keep blood pressure and cholesterol levels in check

Your heart beats roughly 115,000 times a day, and with every beat, it sends about 20% of the oxygen in your body to your brain.

High blood pressure can weaken your heart muscle and is one of the leading causes of strokes. Ideally, your blood pressure should be no higher than 120/80.

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https://image.cnbcfm.com/api/v1/image/106981107-1637963757088-GettyImages-188011449.jpg?v=1668350375&w=740&h=416&ffmt=webp&vtcrop=ycaracterdesign | Getty

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Click the link below for the article:

https://www.cnbc.com/2022/11/13/brain-expert-shares-his-7-hard-rules-for-boosting-memory-and-fighting-off-dementia.html?utm_source=pocket_discover

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‘That Girl is Going to Get Herself Killed’

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In 2012, I was working at a hotel in Glacier National Park when a man I’d just met invited me for a day of tubing and drinking beer on the river. Little did I know, I would nearly drown in the rapids. 

But this story doesn’t begin in the water. 

This story begins at Many Glacier Hotel the night before the start of the summer season. The employees, most of us new to each other, new to Glacier, gathered in a basement theater space typically reserved for a folk singer who performed songs about mountaineering. A seasoned National Park Service ranger stood before us in the usual wide-brimmed hat and stiff green trousers. 

“Glacier National Park is dangerous,” she said. “And every year, there are fatalities. Climbing accidents, deadly encounters with animals. Some of you have experience in nature. Some of you are new to it. Either way, statistically, one of you will die this summer.” 

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https://i0.wp.com/longreads.com/wp-content/uploads/2022/11/GettyImages-120881217-scaled.jpg?resize=1200%2C787&ssl=1Alpen Glow hits Grinnell Point and Mt. Gould reflected in Swiftcurrent Lake, Glacier National Park, Montana. Photo by Matt Champlin (Getty Images).

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Click the link below for the article:

https://longreads.com/2022/11/15/death-in-national-parks/?utm_source=pocket_discover

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I was a college academic advisor. I wish parents understood that AP classes, straight A’s, and competitive sports do not equal success for students.

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When I meet other parents, their first question is usually: “Where do your kids go to school?” There are more “advantaged” schools in our town where attendance supposedly equates to higher test scores, better opportunities, and — as the thinking goes — college success.

But I was a university academic advisor for six years. Every year, I heard things like “I’m burned out from high school,” or,  “I failed my first test. What should I do?”

These are students who did everything right when it came to preparing for college. Here’s what I’ve come to understand from my years working with students about our markers for success.

AP classes may be overrated

AP classes give students college credit if they get certain scores on expensive AP tests. AP credits usually replace a university’s general education — also known as gen-ed — requirements. If a student comes in with AP English, US History, Economics, Art, and Calculus credits, most of their gen-ed courses are covered.

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https://i.insider.com/6346dd0e39a9f1001232caec?width=1000&format=jpeg&auto=webpKlaus Vedfelt/Getty Images

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Click the link below for the article:

https://www.insider.com/college-academic-advisor-on-what-she-wishes-parents-understood-2022-10?utm_source=pocket_discover_education

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Desert Golf Course Palm Springs

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Palm Springs is a desert resort city in Riverside County, California, United States, within the Colorado Desert’s Coachella Valley. The city covers approximately 94 square miles (240 km2), making it the largest city in Riverside County by land area. With multiple plots in a checkerboard pattern, more than 10% of the city is part of the Agua Caliente Band of Cahuilla Indians reservation land and is the administrative capital of the most populated reservation in California.

The population of Palm Springs was 44,575 as of the 2020 census, but because Palm Springs is a retirement location and a winter snowbird destination, the city’s population triples between November and March.

The city is noted for its mid-century modern architecture, design elements, arts and cultural scene, and recreational activities.

The first humans to settle in the area were the Cahuilla people, who arrived 2,000 years ago. Cahuilla Indians lived here in isolation from other cultures for hundreds of years prior to European contact. They spoke Ivilyuat, which is a Uto-Aztecan language. Numerous prominent and powerful Cahuilla leaders were from the area, including Cahuilla Lion (Chief Juan Antonio). While Palm Canyon was occupied during the winter months, they often moved to cooler Chino Canyon during the summer months. Wikipedia

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An image from Desert Golf Course Palm Springs

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The Case for a Long Divorce

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When Cordelia realized her marriage was over, she didn’t pack up and move out—she went to her then-husband and told him she wanted to start the process of breaking up. Thirteen months of therapy later (individual therapy for herself and her husband, couples therapy together, and therapy for each of their two adolescent children), they finally separated. She remembers a dinner with friends during that time where she cried out of frustration because they insisted she was dragging out the breakup and should just get on with her life. But after a 13-year marriage and two children, Cordelia (who asked that her last name be withheld since her divorce is ongoing) felt that the breakup deserved all the time and counseling necessary for every party involved to move on in the kindest way possible.

I have to do this the way I think is the right way, which is slowly and carefully, and not rush any decision that I might regret later,” Cordelia told me about her thinking at the time. She remembers the relationship as being good, in many ways: Her ex was faithful, financially secure, and a good father. Ultimately, though, she just didn’t see a future together. Although she and her ex both went into counseling, the idea wasn’t to try to stay together—it was to figure out how to part amicably. Many long-term relationships follow a painfully cliché playbook when they end: Have a big fight; move out; fight over your stuff; never speak again; begin to hate each other; talk badly about each other to your friends; etc. But more people breaking up today are reconsidering the best way to end a relationship, including how to honor their time together.

Breakup counseling has become noticeably more common in recent years, according to Matt Lundquist, a psychotherapist in New York whose practice also specializes in couples therapy. He attributes the rise, yes, in part to Gwyneth Paltrow’s 2014 popularization of the term conscious uncoupling, but also to some of what Cordelia detailed: The idea of what a marriage could and should be has changed. “I think that the barrier to divorce … has gone down,” Lundquist told me. Although many couples used to divorce only under extreme circumstances—infidelity, violence, emotional abuse—he said, more couples today are willing to consider divorce “even in scenarios where things aren’t necessarily dire but are nonetheless not working for them.”

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https://cdn.theatlantic.com/thumbor/vbcCowoqFJZLPF5DRnHKr-Yq_90=/0x0:2088x1174/960x540/media/img/mt/2022/11/BreakUp_1/original.gifAs the reasons for ending relationships change, so too are the ways people end them. (Ben Hickey)

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Click the link below for the article:

https://www.theatlantic.com/family/archive/2022/11/divorce-breakup-counseling-conscious-uncoupling/672053/

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