The textbook version of the "Out of Africa" hypothesis holds that the first human species to leave the continent around 1.8 ...

Fossils found in Georgia challenge existing theories of human origins, suggesting two early human species coexisted at the Dmanisi site.

When hormonal contraceptive pills hit the market in the 1960s, it revolutionized women’s control over their own bodies. For men, successful reproduction begins with the right cocktail of hormones, ...