Biologists have debated the reason why Homo sapiens evolved a prominent lower jaw, but this unique feature may actually be a by-product of other traits shaped by natural selection ...

Far from the common assumption of a strictly binary division of labor, the roles of women and men in Neolithic Europe were both clearly differentiated and flexible, according to a new study conducted ...

Different species often form due to geographic barriers such as mountain ranges or rivers, which separate populations of the same species until they have become so different that they can no longer ...