Rising Arctic temperatures and melting sea ice could be causing cold air to flow into the Northern Hemisphere. But not all ...

Much of the nation east of the Rocky Mountains is hunkered down for what could be the worst winter storm of the season.

The sudden blast may come as a shock to many Americans after a mostly mild start to winter, but that warmth may be partly ...

To understand what Americans are experiencing with this winter blast, we need to look more than 20 miles above the surface of ...

Greenland’s remote eastern fjords are a place of elemental beauty, where glaciers carve through the land, musk oxen roam ancient valleys and human resilience is tested against the raw power of nature.