The polar vortex is beginning to stir, signaling the first signs of seasonal change. Here's when to expect the first frost in New Hampshire.

As the winter storm plagues the United States this Christmas, a crippling ice storm slammed into Seattle and the Pacific Northwest. The icy roads caused parked cars in Seattle to slide down the street ...

The polar vortex is stirring up, bringing the earliest hints that the seasons are changing. When will Wisconsin see its first freeze?

China’s footprint in the Arctic is already growing, and the development of civil-military capabilities in some of its established polar research stations could provide the foundation for future Arctic ...

The Arctic storm dubbed the "Beast from the East" saw temperatures across much of Europe fall Monday to their lowest level this winter and even brought a rare snowstorm to Rome, paralyzing the city ...

The polar vortex is stirring up, bringing the earliest hints that the seasons are changing. What does that mean for Vermont?