High temperatures and extreme pressures create ice with properties of both crystalline ice and liquid water Scientists have finally observed plastic ice (illustrated), a sort of hybrid phase between solid ice and liquid water that may form in the interiors of icy worlds like Neptune and Jupiter’s moon Europa. In plastic ice, the individual molecules

Carbon-dating teeth suggests two large mammal species roamed northeastern Brazil 3,500 years ago In what is now northeastern Brazil, large mammals (some illustrated) may have roamed as recently as 3,500 years ago. Júlia d’Oliveira Some species of megafauna might have existed for much longer than the paleontological canon suggests. Current thinking says that ancient, large

This is episode 2 of The Deep End. Listen to more episodes here. Depression can affect not just the mind, but the body, too. Inner experiences of mental struggles are private. But in this episode, Jon Nelson and another volunteer, Amanda, let listeners in. Woven into their stories is a brief history of deep brain

Carbon-dating teeth suggests two large mammal species roamed northeastern Brazil 3,500 years ago In what is now northeastern Brazil, large mammals (some illustrated) may have roamed as recently as 3,500 years ago. Júlia d’Oliveira Some species of megafauna might have existed for much longer than the paleontological canon suggests. Current thinking says that ancient, large

BOSTON — The official theme of the meeting of the American Association for the Advancement of Science, held February 13–15, is “Science Shaping Tomorrow.” The unofficial theme is “uncertainty.” With thousands of scientists, advocates and policy experts in attendance, AAAS is the largest science meeting to take place in the United States since the beginning

Pamela Canaday loves her job. For the last 20 years, she has been supporting biomedical research labs at Oregon Health & Science University in Portland by running flow cytometry, a test that helps researchers figure out what kinds of cells are in a sample. A self-described “machine junkie,” Canaday says she was born for the

New video shows how coming-of-age mushroom coral polyps migrate from reef to blue depths This coral polyp lives as a loner and can even — very slowly — walk. Without legs. New video reveals details of its locomotion. B.M. Lewis et al/PLOS One 2025 (CC-BY 4.0) A coral walks into a (sand) bar. This may

After decades of drought, recent storms added only 25 percent of the water lost since 2006 Despite more than a dozen atmospheric rivers pummeling California with epic rainfall early in 2023, drought-ravaged aquifers there still didn’t get fully recharged. Water vapor for one of those atmospheric rivers is depicted in shades of teal. NASA Even

Zebras and giraffes offer one another protection without food competition In the wild, zebras and giraffes can frequently be found traveling together. The two species may offer protection to each other and don’t compete for food (as seen here), a new study suggests. Willem Cronje/istock/Getty images plus In the opening scene of The Lion King

Norovirus has been top of mind for many this winter: Everybody seems to know somebody that’s been temporarily felled by the winter vomiting bug. The anecdotal sense that norovirus is everywhere has been born out in some data so far. From August to mid-January, there were about twice as many outbreaks than there were in