In a typical summertime thunderstorm, warm, moist air rises rapidly into the atmosphere, where it hardens into ice crystals, ...

Whether you call him groundhog, woodchuck, whistle-pig or use the full genus and species name, Marmota monax, the nation's ...

The process begins when rain or melted snow saturates the ground. As temperatures plummet quickly below freezing, this water solidifies and expands, building immense pressure on the surrounding earth ...

The northern lights have been shining over Michigan this week, when they aren't blocked by winter weather. What to expect ...

Northern lights were reported across mid-latitudes, with sightings stretching from Germany to the southwestern United States, ...

At a small number of beaches around the world, dry sand actually makes noise underfoot, caused by friction between ...

The idea that brutal winter conditions of this kind mean that climate change isn’t happening is a misconception.

Intense snowfall coupled with extreme precipitation and humidity created favorable conditions for this sundog to materialize ...

As spring approaches, daylight will lengthen dramatically, eventually leading to the opposite extreme: the midnight sun, where the sun remains visible 24 hours a day from May through early August.

Forty years after the Challenger disaster, NPR explores the engineers' last-minute efforts to stop the launch, their decades ...

As the U.S. prepares to take on another bout of cold weather, the term "polar vortex" is getting thrown around. But what is ...

What are frost quakes and what’s the cause of the mysterious sound? - The process begins when rain or melted snow saturates ...