Fossils unearthed in Ethiopia are reshaping our view of human evolution. Instead of a straight march from ape-like ancestors to modern humans, researchers now see a tangled, branching tree with ...

Researchers discovered that autism’s prevalence may be linked to human brain evolution. Specific neurons in the outer brain evolved rapidly, and autism-linked genes changed under natural selection.

Lemurs and the delights of fieldwork -- Humankind's place in nature -- People get a fossil record -- Neanderthals and man-apes -- The synthesis and Handy Man -- Evolutionary refinements -- The gilded ...