Two-thirds of animal and plant populations are declining in genetic diversity, which makes it harder to adapt to environmental changes, according to research published Wednesday.

Before species go extinct, their populations often shrink and become isolated. Healthy populations tend to have a large gene ...

Asteroid samples fetched by NASA hold not only the pristine building blocks for life but also the salty remains of an ancient water world, scientists reported Wednesday.

This week, astronomers reported the discovery of a super-Earth potentially capable of sustaining life, occupying an eccentric ...

A 13th-century fresco rediscovered in Ferrara, Italy, provides unique evidence of medieval churches using Islamic tents to ...

Scientists have cast doubt on the reliability of America's most celebrated rodent forecaster—whose apparent knack of predicting how long winter will last forms a hallowed tradition in the United ...

A colossal explosion in the sky, unleashing energy hundreds of times greater than the Hiroshima bomb. A blinding flash nearly ...

As insect populations decrease worldwide in what some have called an "insect apocalypse," biologists are desperate to ...

An enormous chunk has broken off the world's largest iceberg, in a possible first sign the behemoth from Antarctica could be ...

New research reveals the surprising ways atmospheric winds influence ocean eddies, shaping the ocean's weather patterns in ...