James' World 2

Click the link below the picture

.

The armed men aren’t supposed to be here. We are several miles inside Buffalo Springs National Reserve in northern Kenya, and the driver I hired for this reporting project and I are checking out a rumor that the reserve’s elephants may have gone missing. Nearly 8,000 elephants have inhabited the broader Samburu-Laikipia ecosystem, which covers around 21,200 square miles. They should be easy to find, but the area is in the grip of drought, which has exacerbated simmering conflict among armed local communities fighting over livestock, grazing lands, and limited water supplies. Some of these armed groups have moved into protected areas like Buffalo Springs, driving the elephants away, sometimes by shooting at them, and sometimes because elephants often flee areas of high human activity. Instead of pachyderms, we find grazing cattle and herders with guns. They stop to watch us as we pass.

Back at the park gate, an itinerant trader warns us to be careful. “Not a week passes without something happening here,” says Daniel Lochilia. “People are being killed. Good luck in finding any elephants.”

With so many armed men and their cattle in the reserve, the elephants have likely fled to face an uncertain future in the human-dominated landscapes that lie beyond. The issue is indicative of the battle to save Kenya’s—and, more broadly, Africa’s—elephants, which has entered a new phase. A pachyderm decline that was once mostly fueled by poaching is now being driven by conflict between humans and elephants.

.

Savannah elephants walk through tall grass in Tsavo, a region in south-eastern Kenya. Trouble often begins when elephants stray from a protected area into human-dominated landscapes. © Frank af Petersens / Save the Elephants

.

.

Click the link below for the article:

.

__________________________________________

Click the link below the picture

.

Vibrant Carnival Atmosphere and Deep-Rooted Political Significance

The intriguing exchange occurred on Saturday, August 12th, during Trump’s campaign stop at the iconic Iowa State Fair.

The Iowa State Fair, a classical American event known for its vibrant carnival atmosphere and deep-rooted political significance, served as the backdrop for Trump’s campaign activities.

As the former President engaged with fairgoers and basked in the festivities, a question posed by a reporter drew attention.

The reporter questioned, “President Trump, did you intend to overturn the 2020 election?”

Political Significance

“You know the answer to that,” Trump replied, conveying a sense of confidence.

While the intention behind his response remained veiled, the context in which it unfolded holds significant implications.

.

Trump

.

.

Click the link below for the article:

.

__________________________________________

Click the link below the picture

.

Heart in your throat. Butterflies in your stomach. Bad gut feeling. These are all phrases many people use to describe fear and anxiety. You have likely felt anxiety inside your chest or stomach, and your brain usually doesn’t hurt when you’re scared. Many cultures tie cowardice and bravery more to the heart or the guts than to the brain.

But science has traditionally seen the brain as the birthplace and processing site of fear and anxiety. Then why and how do you feel these emotions in other parts of your body?

I am a psychiatrist and neuroscientist who researches and treats fear and anxiety. In my book “Afraid,” I explain how fear works in the brain and the body and what too much anxiety does to the body. Research confirms that while emotions do originate in your brain, it’s your body that carries out the orders.

Fear and the brain

While your brain evolved to save you from a falling rock or speeding predator, the anxieties of modern life are often a lot more abstract. Fifty-thousand years ago, being rejected by your tribe could mean death, but not doing a great job on a public speech at school or at work doesn’t have the same consequences. Your brain, however, might not know the difference.

There are a few key areas of the brain that are heavily involved in processing fear.

When you perceive something as dangerous, whether it’s a gun pointed at you or a group of people looking unhappily at you, these sensory inputs are first relayed to the amygdala. This small, almond-shaped area of the brain located near your ears detects salience, or the emotional relevance of a situation and how to react to it. When you see something, it determines whether you should eat it, attack it, run away from it or have sex with it.

.

In the face of a perceived threat, your body often activates a fight-or-flight response. George Peters/DigitalVision Vectors via Getty Images

.

.

Click the link below for the article:

.

__________________________________________

Click the link below the picture

.

Algorithms have become ubiquitous. They optimize our commutes, process payments, and coordinate the flow of internet traffic. It seems that for every problem that can be articulated in precise mathematical terms, there’s an algorithm that can solve it, at least in principle.

But that’s not the case — some seemingly simple problems can never be solved algorithmically. The pioneering computer scientist Alan Turing proved the existence of such “uncomputable” problems nearly a century ago, in the same paper where he formulated the mathematical model of computation that launched modern computer science.

Turing proved this groundbreaking result using a counterintuitive strategy: He defined a problem that simply rejects every attempt to solve it.

“I ask you what you’re doing, and then I say, ‘No, I’m going to do something different,’” said Rahul Ilango, a graduate student at the Massachusetts Institute of Technology studying theoretical computer science.

Turing’s strategy was based on a mathematical technique called diagonalization that has a distinguished history. Here’s a simplified account of the logic behind his proof.

String Theory     

Diagonalization stems from a clever trick for solving a mundane problem that involves strings of bits, each of which can be either 0 or 1. Given a list of such strings, all equally long, can you generate a new string that isn’t on the list?

.

Kristina Armitage/Quanta Magazine

.

.

Click the link below for the article:

.

__________________________________________

Click the link below the picture

.

.

Secretary of Energy, Jennifer Granholm.Graeme Sloan/Sipa via AP Images

.

.

Click the link below for the article:

.

__________________________________________

Click the link below the picture

.

Imagine it’s a Sunday night, and you have a busy day planned for tomorrow, filled to the brim with non-negotiable errands, meetings, and deadlines. You’re exhausted, and yet, even though you know you should get to sleep, you just can’t seem to turn your brain off. Your mind is going a mile a minute… and before you know it, the clock reads 3:00 a.m. You eventually fall asleep, but the next day, you can tell your brain isn’t operating at full capacity as you struggle to get through your to-do list. That night, you aim to get to bed early and clock a full night’s sleep—but you’re anxious about all the tasks you were supposed to get done that day. Before you know it, it’s 3:00 a.m. again.

If the above scenario sounds familiar, you may have fallen victim to the vicious cycle of sleep loss and procrastination. And you’re not alone: The Centers for Disease Control and Prevention reports that roughly one in three adults in this country aren’t getting enough sleep. And without proper sleep, carrying out important projects and tasks can be damn near impossible… which can, in turn, make it even harder to fall asleep on following nights.

How sleep loss can lead to procrastination

According to neuropsychologist Sanam Hafeez, PsyD, sleep is an opportunity for the brain to rejuvenate and repair itself. While you may swear up and down that you can operate with just a few hours of shut-eye and a strong cold brew, the brain needs between 5.5 and 7.5 hours of sleep nightly in order to reap its full cognitive benefits.

“The body still needs sleep, even if you think you don’t need it,” says Dr. Hafeez. “When you sleep, your cells regenerate, and they help the neurons communicate with one another. If that’s not happening, how does your brain know what to do? Different parts of the brain, instead of working in tandem, are now doing their own thing.”

When we don’t get enough sleep, says Dr. Hafeez, our brains can only handle the absolute bare minimum. Executive functions—aka the mental processes that help us make decisions, pay attention, regulate our emotions, and carry out projects requiring concentration—take a serious hit when we get too little sleep.

This lapse in executive function makes it difficult to practice self-control and see tasks through to their completion—a mindset ripe for procrastination. Even when we’re well-rested, it’s natural for our brains to seek out immediate gratification and resist complex, hefty tasks. But studies show that sleep deprivation’s impact on cognitive function can lead to heightened impulsivity, risk-taking, and poor decision-making, such that procrastination (especially on tough or important tasks) becomes the more appealing choice.

.

Image: W+G Creative

.

.

Click the link below for the article:

https://www.wellandgood.com

.

__________________________________________

Click the link below the picture

.

As the summer winds to a close, and we reluctantly trade beach days and late sunsets for cooler weather and school or work, we also have to confront the reality that COVID will remain a part of our lives. The U.S. has already seen a summer bump in cases in recent weeks, with hospitalizations and wastewater levels of the virus creeping back up. So many people may be wondering when they can get another COVID vaccine.

According to the U.S. Food and Drug Administration, the updated fall COVID booster will likely be available around mid-September—once the agency authorizes it. The Centers for Disease Control and Prevention will then issue recommendations on which groups of people can or should get vaccinated.

An FDA advisory committee met in June to determine which strains of the COVID-causing virus SARS-CoV-2 should be included in the fall booster. It settled on XBB.1.5, which has been the dominant variant in the U.S. for much of this year. Recently a new variant called BA.

2.86 was detected, and it has more than 35 new mutations, compared with XBB.1.5. Cases of BA.2.86—which, like XBB.1.5, is an offshoot of the well-known Omicron variant—have been found in the U.S., Denmark, Israel, and other countries. The new variant currently makes up only a tiny fraction of cases, although SARS-CoV-2 is being sequenced and tracked far less closely today. Whether BA.2.86 is better at evading the immune system or causes more severe disease remains to be seen, but FDA scientists say the fall COVID booster and prior immunity should still help protect against serious illness.

.

Credit: Eric Lee for the Washington Post via Getty Images

.

.

Click the link below for the article:

.

__________________________________________

Click the link below the picture

.

America’s birds are in trouble. Since 1970, nearly 3 billion birds have vanished from the skies over North America.

Most of those losses have been in migratory species, which may breed in the United States or Canada in the summer before heading elsewhere for the winter. Many spend more time living on Caribbean beaches or in Costa Rican forests than they do in American backyards. “They’re really visitors to North America,” said Viviana Ruiz-Gutierrez, co-director of the Center for Avian Population Studies at the Cornell Lab of Ornithology.

Protecting these birds will require working across international borders and safeguarding all of their habitats, many of which are under threat. If migrating birds lose their winter refuges, the consequences will ripple across the hemisphere.

“If we lose Central America’s forests, we can lose North America’s birds,” said Jeremy Radachowsky, the director for Mesoamerica and the western Caribbean at the Wildlife Conservation Society.

To illuminate these connections, scientists at the Cornell Lab of Ornithology developed “shared stewardship” maps in collaboration with Partners in Flight, an international bird conservation network. Each map displays the key wintering grounds for the migratory species that have a significant summer presence in a particular U.S. state or region. The maps are based on data from eBird, a database of observations from bird watchers around the world.

.

Simone Noronha

.

.

Click the link below for the article:

https://www.nytimes.com

.

__________________________________________

Click the link below the picture

.

On an overcast spring morning in 2012, Federica Bertocchini was tending to her honeybees close to where she lived in Santander, on Spain’s picturesque northern coast. One of the honeycombs “was plagued with worms,” says the amateur apiarist, referring to the pesky larvae of wax moths that have a voracious — and destructive — appetite.

Bertocchini picked out the worms, placed them in a plastic bag, and carried on with her beekeeping chores. When she retrieved the bag a few hours later, she noticed something strange: It was full of tiny holes.

The scientist’s interest was piqued. Had the hungry worms simply chewed up the plastic, or had they changed its chemical makeup too? Quick tests in her lab confirmed, surprisingly, the latter: Something in the worms’ saliva had degraded the plastic. “From that point, the research started,” says Bertocchini, a developmental biologist formerly with the Spanish National Research Council.

She is now the co-founder of Plasticentropy — one of the numerous startups and research groups that have sprouted in recent years seeking bio-inspired means to recycle plastic. This biological recycling, as it’s called, could offer more effective and environmentally friendly alternatives to some of today’s problem-riddled recycling methods.

The effort has scientists scouring landfills, auto-wrecking yards, and other sites teeming with plastic pollution in search of organisms that might be able to break down plastic into its component pieces. By taking these microbes and enhancing their polymer-munching abilities in the lab, scientists hope to find an efficient way of reclaiming the building blocks of plastics. They would then use these subunits to manufacture new materials, thus creating an “infinite recycling” loop.

.

Discoveries that certain plastics can be broken down by enzymes, such as those in the saliva of the waxworm moth (Galleria mellonella) larva shown here, have propelled the biological recycling movement. CREDIT: CESAR HERNANDEZ / CSIC

.

.

Click the link below for the article:

.

__________________________________________