California, long known for its seismic activity, is experiencing an alarming increase in geological shifts—and some fault ...

Sinking cities. The land beneath major coastal cities in California is sinking, which will likely have an effect on sea ...

An erupting Hawaii volcano once again began shooting fountains of lava that reached hundreds of feet high on Tuesday. Fountains reached heights of 400 feet to 500 feet in the early morning hours, ...

The petroglyphs can be found on volcanic tuff formations formed over 760,000 years ago when a large eruption released hot ash ...