Why do koala bears hug trees?

As temperatures climb, koalas move to cooler trees and go limp, like wet dishrags. Turns out their tree-hugging is a cooling mechanism.

Kansas had a heat burst on the night of June 3-4

For a few hours around midnight, in Kansas, temperatures suddenly shot up by 10 degrees F. Meteorologists call it a heat burst. Read how it happens.

Severe storms blast through central U.S. on Tuesday

More severe weather expected Wednesday through the Ohio/Tennessee Valley region. Damaging wind and large hail. A tornado threat cannot be ruled out.

What caused the record Greenland ice melt in summer 2012?

It was hot in summer 2012, but that year also had record wildfires in the N. Hemisphere. Scientists now think soot from the fires helped melt Greenland's ice.

2014 Atlantic hurricane season begins

June 1 is the official start to the Atlantic hurricane season.

Identify 500 birds with new Birdsnap app

Take a picture of a bird and identify it. This free new iPhone app is an electronic field guide featuring 500 of the most common North American bird species.

Two incredible and scary weather videos

A tornado and a lightning strike. Watch these two scary videos of dangerous weather from the U.S. Great Plains.

An ancient battle: A 900-pound croc takes on a 58-foot snake

An ancient, 16-foot, 900-pound crocodile may have been overmatched by a monster snake that swam in the same rivers 60 million years ago.

New image of seafloor zone where Malaysia Airlines Flight 370 might lie

A new illustration of the seafloor, created by two of the world’s leading ocean floor mapping experts, details underwater terrain where the missing Malaysia Airlines flight might be located.

April 2014 tied with warmest on record, or second-warmest

Yes, some of us in North America have been shivering this spring. But our local weather is not the whole story.