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

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

Credit: Geología Valdivia New findings from Chile challenge a foundational idea about the earliest settlement of the Americas ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Mosquitoes have existed far longer than humans, but evolved to feed off of their blood. - Tang Chhin Sothy/AFP/Getty Images ...

(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 ...