Scientists develop a simple and scalable strategy to produce resin films with anti-reflective nanostructures–inspired by eyes of moths — ScienceDaily

There is a huge number of human problems that scientists and engineers have solved by drawing ideas directly from mechanisms found in other lifeforms, from Velcro to Japan’s famous bullet trains, the Shinkansen. Thus, it should not come as a surprise to know that many remarkable advances in anti-reflective coating were inspired by the peculiar […]

Greening the Friendly Skies – Eos

The fight over Heathrow Airport’s third runway has been going on for decades. On the proposed site in a cluster of villages outside of London, residents fought the demolition of 750 properties and the addition of a lot more aircraft noise. Climate activists—some of whom went so far as to occupy one of […]

The $70 Raspberry Pi 400 is a computer crammed into a keyboard

There’s a whole computer in there. (Raspberry Pi /) Last year, the Raspberry Pi 4 hit the market, promising all the essential guts that make up a surprisingly powerful computer for just $35. Add a $5 case and you have a basic computer—with USB ports, up to 4 GB RAM, Bluetooth, and Wi-Fi for less […]

Psychedelic treatment with psilocybin relieves major depression, study shows

In a small study of adults with major depression, Johns Hopkins Medicine researchers report that two doses of the psychedelic substance psilocybin, given with supportive psychotherapy, produced rapid and large reductions in depressive symptoms, with most participants showing improvement and half of study participants achieving remission through the four-week follow-up. A compound found in so-called […]

Near-atomic ‘maps’ reveal structure for maintaining pH balance in cells

Cryo-EM images of proton-activated chloride channel (PAC). Credit: Dr. Wei Lü, Van Andel Institute For the first time, scientists have visualized a new class of molecular gates that maintain pH balance within brain cells, a critical function that keeps cells alive and helps prevent stroke and other brain injuries. These gates, called proton-activated chloride channels […]

US officially becomes only nation to leave the Paris Climate Agreement

As of today (Nov. 4), the U.S. will officially leave the Paris Climate Agreement, a nonbinding pact between nearly 190 nations to reduce greenhouse gas emissions and curb climate change. The Trump administration began the formal process of exiting the Agreement on this day last year by filing the necessary paperwork to the United Nations, […]

Female big-game hunters may have been common in ancient Americas

A woman buried with spearpoints and other hunting tools roughly 9,000 years ago in Peru’s Andes Mountains has reemerged to claim the title of the oldest known female big-game hunter in the Americas. Her discovery led researchers to conclude that, among ancient Americans, nearly as many females as males hunted large animals — a finding […]

How birth experience shapes development — ScienceDaily

It is an experience we all share, as miraculous as it is mysterious. Birth. Today, roughly one in three births in the United States occurs via cesarean section or C-section. In some other countries across the globe, like Brazil and Turkey, this percentage is even higher. Yet little is known about how delivery by C-section […]

Finding Prehistoric Rain Forests by Studying Modern Mammals

The Amazon rain forest is one of the most biodiverse places on Earth and plays a key role in the planet’s carbon and oxygen cycles. Despite its global importance, many aspects of this ecosystem’s history are still a mystery. Julia Tejada, who recently received her Ph.D. from Columbia University’s Lamont-Doherty Earth Observatory and […]

A record number of kids got COVID-19 last week

Kids also need to wear masks (Pexels/) Follow all of PopSci’s COVID-19 coverage here, including tips on cleaning groceries, ways to tell if your symptoms are just allergies, and a tutorial on making your own mask. Back in April, around two percent of all confirmed COVID-19 cases were diagnosed in children. Kids now account for […]