Hubbard, who first joined the USGS as a postdoc, is part of the agency’s Earth Mapping Resource Initiative (Earth MRI).

Though the volcano’s magma chambers could hold enough material for a caldera-forming event, none of them are likely to erupt soon.

Research on hidden structures deep within Earth’s mantle challenges theories about our planet’s middle layer and could ...

PAX, W.Va. — While the U.S. and Canada turn to the groundhog on February 2 for an end-of-winter forecast, a new online tool ...