Much of the U.S. is under extreme heat warnings or advisories while New York, Philadelphia and Washington could feel like 100 degrees or more.

The term "100-year flood" implies that the event is a rare occurrence; however, dozens of such storms have inundated the ...

Hundreds of small earthquakes were detected at Mount Rainier on Tuesday in the largest such swarm at the active stratovolcano since 2009, according to the U.S. Geological Survey. The swarm began ...

Was that an earthquake you just felt or merely a big truck rumbling by? You don't have to wonder thanks to the U.S.

Volcanoes are rumbling as scientists monitor earthquakes at Washington's Mount Rainier and Alaska's Iliamna volcano.

The U.S. Interior Department on Thursday took steps to increase recovery of critical minerals, used in everything from ...

The 1.6 magnitude earthquake occurred west of Morris Plains at around 5:40 a.m., according to the U.S. Geological Survey's ...