This week, alpinist Anatoli Boukreev would have turned 67. One of the best alpinists of the 20th century, Boukreev made hundreds of bold ascents.

A new way of measuring structures deep inside Earth has highlighted numerous previously unknown blobs within our planet's mantle. These anomalies are surprisingly similar to sunken chunks of Earth ...

"He's just one hell of a man, you know. There's my parents, and there's Walt." Manger was Morton's geology professor at the University of Arkansas. Morton took a geology class to fulfill a science ...