Deep in Alaska’s Katmai National Park, a perfectly round, 1,600-foot-wide crater has puzzled scientists for decades. Known as ...

Savonoski Crater in Alaska is a 1,600-foot mystery with no meteor debris or volcanic vents. Scientists remain baffled, unsure ...

A Costco executive on the luxury items its wealthy customers love Trump picks retired Air Force Lt. Gen. Dan Caine as next ...

Savonoski Crater in Katmai National Park, Alaska, is a geological mystery because its origin still has no clear scientific explanation. The Savonoski Crater in Alaska has long defied scientific ...

After a couple of practice hops, Grace will then try something unprecedented—entering a permanently shadowed moon crater. The team is targeting a small crater about 200 meters from the landing ...

A native language, or "mother tongue," is the first language a person learns and is usually a key part of their identity, allowing them to connect with their family and friends and to embrace ...

Pope Francis is being treated in hospital for bilateral pneumonia, otherwise known as double pneumonia, according to a statement released by the Holy See Press Office on Tuesday (Feb.18). Vatican ...

James Turrell discusses his ongoing land art piece, Roden Crater, created within a pit formed by an extinct volcano in the Arizona desert. ART21: Where are we, right now? TURRELL: Well, right now ...