Scientific American.com

Horses that were presented with cotton pads soaked in a scared human’s sweat showed more signs of fear themselves

Experts say these reported cuts to federal grants will exacerbate the U.S.’s addiction crisis

Scientists have sequenced the genome of the long-extinct woolly rhinoceros from remains found in the stomach of a naturally mummified Pleistocene wolf pup

The U.S. space agency and the Department of Energy will work together to build a fission reactor on the lunar surface in the next four years

Mathematical tools from string theory are giving scientists a new way to study the networking of neurons

New clues hidden inside T. rex bones suggest that the carnivore lived longer lives than we thought

Robert F. Kennedy, Jr.’s Centers for Disease Control and Prevention has slashed childhood vaccine recommendations in the middle of respiratory virus season

A food scientist debunks the vilification of seed oils on social media and explains what research says about them.

Global warming surpassed 1.5 degrees Celsius for the past three years, meaning Earth is currently on track to breach the Paris climate agreement by the end of the decade

New research suggests that the x-ray light coming from the Milky Way’s central black hole Sagittarius A* has changed dramatically in the span of just a few hundred years

The skyrocketing electricity demands of AI data centers—and a cold snap—are driving up America’s emissions after years of declines, a new report finds

This reported machine may be linked to “Havana syndrome,” a debated condition characterized by a strange panoply of symptoms that were experienced by U.S. officials stationed in Cuba

Cancer survival rates climbed significantly in recent decades. But federal funding cuts could threaten that progress, physicians warn

Traditional solar fails in the windswept north. Two Swedish inventors are betting on aerodynamic resilience to solve the latitude gap

NASA astronaut and ISS leader Mike Fincke transferred station command to a Russian cosmonaut ahead of an unprecedented medical evacuation

New research links same-sex behaviors in nonhuman primates to the evolution of complex social structures

Discovered by volunteer scientists, this alien planet is out of synch with its siblings

A traditional card deck happens to dodge a tricky poker paradox. Other poker variants aren’t so lucky

Why flu cases are spiking, how AI predicts disease from your sleep, and what surprising biomechanics lie behind woodpeckers’ powerful pecks.

Four ISS crew members are set to touch down on Thursday after NASA announced the first medical evacuation in the space station’s history