The Ennedi rock art of Chad should not be read as decoration alone, but as a visual narrative of environmental change.

A political feud and a drive to end climate research has put the National Center for Atmospheric Research at risk.

Following the species' comeback, new pressures are converging on their wintering habitat along the Texas coast.

It's the nation's largest multi-program science and technology laboratory. But nuclear science is its history — and its future.

"The Giant Leap," by astrobiologist Caleb Scharf, is an optimistic account of our widening journey into the cosmos.