Mountain rescue training in New Mexico prepares medical professionals for the toughest conditions. Find out how they're learning to save lives in the most challenging conditions.

From towering mountains to vast deserts, America’s landscapes were shaped by powerful geological forces over millions of years. Discover how volcanic eruptions, shifting tectonic plates, and ancient ...

The remnants of an "atmospheric river" will move across Arizona Friday into the weekend, but most of the river's flow will stay in California.