Mount Rainier is America's most dangerous volcano. Scientists warn lahars could devastate 150,000 people with little warning.

Mount Rainier looks like a postcard, but it is an active volcano with a danger most people do not picture: mud. The mountain holds 28 major glaciers and about 36 square miles of ice, which can mix ...

ANCHORAGE, Alaska (AP) — Alaska Airlines canceled more than two dozen flights in its namesake state Thursday because of an ash cloud from a volcano in Russia that drifted into Alaska, the ...