Findings about the chemical makeup of cave systems can teach us about life in places humans have yet to reach.

Geomagnetic storm conditions may bring the northern lights to more U.S. states along the Canadian border on Wednesday, with ...

Some across the U.S. may again have a chance to see the northern lights Tuesday night as material hurled out by the sun reaches Earth. After a coronal hole high speed stream, or CH HSS, was spotted on ...