Beneficial mutations happen quite frequently, but the world changes too fast for them to stick.

Researchers suggest that evolution may speed up dramatically during certain periods, challenging a long-held theory and helping explain a puzzling 30-million-year gap between genetic estimates and the ...

In 1858, English naturalists Charles Darwin and Alfred Russel Wallace independently reached the same groundbreaking conclusion — populations of living organisms change over time through natural ...

"Hearst Magazines and AOL may earn commission or revenue on some items through these links." On November 24, 1859, geologist-turned-biologist Charles Darwin published On the Origin of Species, ...