Add Yahoo as a preferred source to see more of our stories on Google. Scientists now recognize more than a dozen species in the Homo genus. So what, exactly, was the first human species? The answer, ...

Modern human beings are the ultimate apex species, exerting dominance over our environment in a way that no other animal ever ...

(Reuters) -Researchers have unearthed tooth fossils in Ethiopia dating to about 2.65 million years ago of a previously unknown species in the human evolutionary lineage, one that lived in the same ...

When researchers in China announced a possible new human species from a cave in Hebei province, they did more than add another name to our already crowded family tree. They introduced a population ...