While many studies have looked at possible evolutionary links between men's strength and sexual behavior, a Washington State University study included data on women with a surprising result. Women, as ...

Two major fossil discoveries are prompting scientists to reconsider key moments in human evolution. A 7.2-million-year-old Graecopithecus femur from Bulgaria suggests bipedalism may have emerged ...

As early humans spread from lush African forests into grasslands, their need for ready sources of energy led them to develop a taste for grassy plants, especially grains and the starchy plant tissue ...

Scientists have traced kissing back to early primates, suggesting it began long before humans evolved. Their analysis points to great apes and even Neanderthals sharing forms of kissing millions of ...

India, May 30 -- Understanding why people think, act, and make decisions the way they do has long fascinated scientists, ...