We are halfway through winter and after an exceptionally warm start, North America’s winter is transitioning toward more predictable patterns with La Nina.

This weekend, a small winter storm may brush through the Sierra Nevada, delivering several inches of cold, light snow.

Discover how snow, ice, Christmas delights and Northern Lights transform these landmarks and destinations around the world.

West Greenland's lakes have undergone an alarming change. Within just a couple of years, thousands of its great blue lakes ...

Trump is taking aim at water supplies for an endangered fish, but scientists say he’s missing the point. It’s one of ...