"Survival of the fittest" is the catch phrase of evolution by natural selection. While natural selection favors the most fit organisms around, evolutionary biologists have long wondered whether this ...

A team of global experts has discovered new signals of natural selection in humans. Led by UC Santa Barbara Tsimane Health and Life History Project co-director Michael Gurven, the team studied two ...

A new study provides clear evidence supporting the proposition that natural selection drives the process of species formation in a wide variety of plants and animals. Charles Darwin would undoubtedly ...