The scientists say the current level of diversity within cattle breeds is at least as great as within humans.

VOA: special.2009.05.05

Most of these are shared among humans as well as mice, rats and other mammals used for comparison in the study.

VOA: special.2009.05.05

The group of now extinct humans known as Neanderthals did not leave clear evidence of being musical.

VOA: special.2009.08.18

She believes the chimp virus infection is not quite as damaging as H.I.V.is in humans.

VOA: special.2009.09.08