Why does the New York City skyline look the way it does? In part, because of what happened there 500 million years ago, says ...

We once drove through Walsenburg with a geologist named Brian Penn, passing gas stations and discount stores and fast food chains when suddenly Penn veered his Ford Ranger to the side of the road and ...

A mysterious blob of heat is slowly rising beneath New England, and it may rewrite what we thought we knew about the Appalachian Mountains. A massive, slow-moving heat anomaly is rising beneath the ...