More states in the northern U.S. will have a chance of seeing aurora borealis on Friday, as high-speed winds from a spot on ...

The coldest burst of Arctic air this season is coming to put an icy exclamation point on America's winter of repeated polar ...

The coldest burst of Arctic air this season is coming to put an icy exclamation point on America's winter of repeated polar vortex invasions, meteorologists warn. And it ...

Buried several miles beneath East Antarctica's ice, Lake Vostok is one of the largest freshwater lakes on Earth, rivaling ...