Most shark fossils are just teeth—their cartilage skeletons usually decay long before they can fossilize. But in northwestern Arkansas, a series of geological sites known as the Fayetteville Shale has ...

Amino acids, the building blocks necessary for life, were previously found in samples of 4.6-billion-year-old rocks from an asteroid called Bennu, delivered to Earth in 2023 by NASA's OSIRIS-REx ...

A legendary golden fabric once worn only by emperors has made an astonishing comeback. Korean scientists have successfully recreated ancient sea silk—a rare, shimmering fiber prized since Roman ...