New research challenges a key archaeological site in Chile, raising fresh questions about when humans first arrived in the Americas.

An archaeologist just overturned a major piece of evidence that humans reached South America before most of North America.

A fresh analysis of tools from several Southeast Asian sites is prompting researchers to rethink how—and when—early humans crossed vast stretches of ocean. The evidence, published in Journal of ...

Digital reconstruction of a crushed skull from an ancient human relative could rewrite the timeline of human evolution, researchers said. A cranium dubbed Yunxian 2 was found in the Yunxian region of ...

(CNN) — Mosquitoes haven’t always had a taste for human blood — partly because the tiny yet dangerous insects have been around a lot longer than humans. Pinpointing when mosquitoes shifted their ...