Gut bacteria can acquire genes from neighboring microbes, adding to the genetic differences linked to how people live.

Japanese macaques from groups hit by a deadly outbreak were more likely to avoid food on feces, even if they had never tested ...

Ancient footprints at White Sands reveal how people returned for nearly 2,000 years as drought and warming transformed an ice age lake.

Each pregnancy adds biological age that takes months to come off, and birth spacing may decide how much a mother recovers ...

Children in greener neighborhoods scored slightly higher on attention tests, suggesting nearby trees and parks may play a ...

Engineers built tattoo inks that switch on under UV light and fade indoors, and the inventor has worn the color-changing ...

Fewer than 250 swift foxes remain in Texas. Two dogs are now guarding cattle on the grassland to test whether they can keep ...

A metal detectorist discovered 934 Roman silver coins near Cologne, Germany, uncovering the country's largest known hoard from Hadrian's reign.

An AI search of more than 50 million chemicals identified 92 potential sugar substitutes that could deliver sweetness without ...

Ancient algae preserved in Arctic seafloor mud suggest climate models overestimate winter sea ice, pointing to less ice in ...

Most anti-aging products already count as drugs under U.S. law, a new analysis finds. However, proving that they work at all ...

A modest gamma-ray burst left an unusually bright afterglow. Astronomers suggest that a jet angled away from Earth could ...