The remarkable natural light show is the result of electrons colliding with atoms in the upper reaches of Earth’s atmosphere.

Up to 15 U.S. states could see the aurora on New Year's Eve, according to the Space Weather Prediction Center.

Heavy snow and strong winds accompanied an atmospheric river over parts of California. These maps show snow totals.

A powerful winter storm system could become a "bomb cyclone" over the Great Lakes and Northeast regions this week.

Snow storms dumped snow on both ends of the country, but how much fell varied widely. Maps show snow totals across USA.

The passage of Proposition 50, which redrew California’s congressional map, means that all of the state’s conservative north ...

A winter storm warning is in place for the eastern and western U.P. and most of the Lower Peninsula, mainly along the western ...

Experts mapped US fossil fuel emissions street by street, showing where pollution really comes from and why data matters for ...

Millions of Americans live in areas under winter storm alerts stretching from northern Minnesota to the Eastern Seaboard.

The attack started in the northern city of Beit Shean when the Palestinian man rammed his vehicle into people, killing one ...

A major winter storm, classified as a bomb cyclone, is currently sweeping into Michigan. How much snow will the blizzard ...

Winter storm delays and cancellations hit thousands of flights across the Northeast and New York. Snow, ice, power risks, ...