U.S. Northeast already hit by climate change, says major report

New U.S. government report on climate change - first in five years - due out May 6. It outlines ongoing effects of a warming climate in the U.S. Northeast.

Magma rising inside Mount St. Helens, but no eruption expected

There has been uplift and minor earthquake activity on Mount St. Helens, an active volcano in Washington state, but there are no signs that it is about to erupt.

Bloated dead whale might explode in Newfoundland town

A bloated carcass of a blue whale that washed ashore near the town's boardwalk could explode at any time, residents fear.

Incredible video shows April 30 landslide in Baltimore devouring cars

This video shows happened in Baltimore's busy Charles Village neighborhood Wednesday, when a retaining wall buckled and sent cars and mud tumbling onto railroad tracks below.

View from space: Arkansas tornado track

A violent tornado touched down in Arkansas on April 27, 2014, killing as many as 15 people. In an April 28 satellite image, you can see the tornado's track. Compare it to a satellite image of the same area taken before the tornado.

Video: How tsunamis work

This 3-minute video explains what causes towering and treacherous tsunamis.

Photos and videos of U.S. tornadoes April 27-29, 2014

Photos and videos from the devastating storms killed at least a dozen people, and possibly many times that number, in the U.S. Central Plains and Southeast in recent days.

Air pollution from Asia is changing weather patterns over the Pacific

New research on Asian air pollution has found that it is increasing rainfall and intensifying storms over the Pacific Ocean.

All you need to know: Tornado safety

Tornado season has started. Learn about the best places to seek shelter and how to protect yourself and stay safe during incoming storms.

Severe weather batters U.S. Central Plains

After a slow start to severe weather season in 2014, Sunday brought storms to the U.S. Central Plains. Monday through Wednesday, the system will move into the U.S. Southeast.