The Ushikawa fossils were initially presented as a humerus bone from the upper arm and the end or head of a femur bone from the leg of a human who had lived more than 20,000 years ago. But in the ...

Other artifacts can help date the site to as early as 20,000 years ago. The Gault Site is among a dozen or so "pre-Clovis" sites in the Americas. Since an earlier presence of humans predates the ...

Humans are often blamed for hastening mammoths’ extinction ... part of a previously unknown group that separated from modern Native Americans about 20,000 years ago, suggesting that multiple groups ...

"It's well known that by the time modern humans come on the landscape, 200,000 to 300,000 years ago, we are really adaptable," he explains. "We not only spread out in Africa but also start ...

Around 15,000 - 20,000 years ago, humans crossed the Bering land bridge from Siberia to Alaska, and from there, they spread southward, eventually reaching the southern tip of South America." ...