Imagine zooming out on a giant family tree that includes every bird you have ever seen. Ostriches sprint across open plains, ...

Most shark fossils are just teeth—their cartilage skeletons usually decay long before they can fossilize. But in northwestern ...

Nine horses have entered Saturday’s $250,000 Sam F. Davis S. at Tampa Bay Downs, a Kentucky Derby qualifier worth 20-10-6-4-2 ...

Whatever challenges life throws, mothers often know best as they guide offspring through the risky stages of early development. This scenario, familiar when applied to humans, turns out to be true for ...

Ancient duplicated genes are giving scientists their first real clues about what life was like before all life on Earth ...

A new study finds that a trait helping a marine bacterium survive and flourish today may ultimately become its Achilles Heel as ocean conditions continue to shift.

This animal's armor has upended a key law of evolution For more than a century, biologists assumed that the bony plates embedded in the skin of lizards – like natural chain mail – were an ancient ...

A new study suggests rapid evolution of widespread neurons in humans may explain higher autism prevalence, showing natural selection enhanced intelligence but increased neurodevelopmental disorder ...