A long-neglected fossil seems to show the evolutionary leap that let the ancestors of today’s many-legged arthropods crawl ...

A rare fossil fish scan reveals brain features and adaptations tied to the transition from aquatic to land animals.

Some of the most beautiful creatures to grace the ancient seas, the ammonites, disappeared in the end-Cretaceous mass ...

Aging is a fundamental biological process shaped by evolutionary forces that have tuned endocrine systems to prioritize growth, reproduction, and survival ...