The national flood insurance program costs Alaskans too much and provides too little in benefits, the bill's sponsor says.

Mount Spurr, whose volcanic ash darkened Anchorage’s skies in 1953 and 1992, may be building toward another eruption.

At least twice in the last few thousand years, Mount Churchill's ice-covered caldera has spewed ash that reached as far as ...

The wreckage of Bering Air Flight 445 is on an ice floe that's moving approximately 5 miles a day, the NTSB said.