Researchers have uncovered an unusual survival strategy in Iberian harvester ants that turns basic biology on its head: The ...

A Beijing military show rekindles debate, but this analysis says the new world order is already here: a fluid, multipolar system led by the U.S., China, and Europe.

Animals are finding paths blocked by roads, homes, oil wells. Butterflies are fading from forests. Giant fish are running into dams, as ancient routes are disrupted.