Archaeologists date earliest known occupation of North America

A team led by Newcastle University, UK, used analysis of ancient coprolites—fossilized excrement—to identify that samples from one of the most famous "pre-Clovis" sites at Paisley Caves, in Oregon, north America, contained ...

Prehistoric humans not wiped out by comet, say researchers

(Phys.org)—Comet explosions did not end the prehistoric human culture, known as Clovis, in North America 13,000 years ago, according to research published in the journal Geophysical Monograph Series.

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