Researchers have found evidence of a titanic tussle between a terror bird and a large caiman in Colombia's ancient La Venta ...

A Neanderthal trackway discovered in Portugal shows how an adult male and two children hunted for food 78,000 years ago.

The tiny 'backward' brain of an ancient sea creature hints that spider ancestors might have gotten their start in the ocean.

An experimental birth control pill for males works by blocking sperm production, and it just passed its first safety test in humans.

Two minor meteor showers — the Southern Delta Aquariids and Alpha Capricornids — peak overnight on July 29-30, making it a ...

Gray wolves were reintroduced in Yellowstone National Park in 1995 to help control the numbers of elk that were eating young ...