Severe thunderstorms will threaten parts of the Plains and Midwest early this week as disturbances combine with plenty of moisture. Damaging winds, large hail and a couple of tornadoes are possible.

Two heroes in Spring, Texas, risk it all to rescue a trapped driver from raging floodwaters.

When thunderstorms rolled through the Rapid City, South Dakota, area, a strange, yellow, cloudlike mist appeared in the sky. What’s the cause? And is it dangerous?

A group of experts is reviving Charles Darwin's acclaimed voyage around the globe, training the next generation of scientists and sharing their findings through real-time updates along the way.

Days of heavy rain caused deadly flooding across southern Germany over the weekend. Thousands were forced to evacuate but many were trapped in their homes and cars. Watch the video to learn how one rescuer died while trying to save others.