When a stone sits on the Earth’s surface, cosmic rays quietly pepper it, leaving behind rare isotopes like tiny time stamps.

WASHINGTON (AP) — Humans are the only animal that lives in virtually every possible environment, from rainforests to deserts to tundra. This adaptability is a skill that long predates the modern age.

Add Yahoo as a preferred source to see more of our stories on Google. A new study using artificial intelligence shows Homo habilis was still preyed upon by leopards 2 million years ago. (CREDIT: Rice ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. WASHINGTON (AP) — Our hands can reveal a lot ...

Studying human evolution involves piecing together scattered clues about how we survived against tough odds. One of the biggest mysteries is understanding how large or small ancient human populations ...

Ancient humans arrived in East Asia hundreds of thousands of years earlier than thought - Findings suggest human ancestors spread across Asia earlier, faster and possibly more successfully than common ...

A cast of a Neanderthal skull at the Chemnitz State Museum of Archaeology in Germany. New research delves into when humans and Neanderthals interbred. Hendrik Schmidt / picture alliance via Getty ...

Researchers have identified a "tipping point" about 2.7 million years ago when global climate conditions switched from being relatively warm and stable to cold and chaotic, as continental ice sheets ...

What did early humans like to eat? The answer, according to a team of archaeologists in Argentina, is extinct megafauna, such as giant sloths and giant armadillos. In a study published in the journal ...

WASHINGTON (AP) — Our hands can reveal a lot about how a person has lived – and that’s true for early human ancestors, too. Different activities such as climbing, grasping or hammering place stress on ...

WASHINGTON (AP) — Humans are the only animal that lives in virtually every possible environment, from rainforests to deserts to tundra. “Our superpower is that we are ecosystem generalists,” said ...

This combination of 2007, 2018 and 2012 photos shows, from left, the Cederberg mountain range in South Africa, the Tenere desert in Niger and savanna in South Africa. (AP Photo/Schalk van Zuydam, ...