Yellowstone
Geologists evaluate Yellowstone National Park, one of the most dangerous geological features on Earth; the park is hit by 500 earthquakes in early 2009, raising concerns a super-volcano is beginning to stir.
Geologists evaluate Yellowstone National Park, one of the most dangerous geological features on Earth; the park is hit by 500 earthquakes in early 2009, raising concerns a super-volcano is beginning to stir.