On Maine’s rugged coast, just north of the tourist town of Boothbay, an underground seismometer is listening for earthquakes. Engineers activated it on 26 September, completing the $90-million ...

From the array, a CT scan-like, 3-D image of Earth’s mantle under Western North America. Yulee, Florida. Not a place one usually thinks of as an Earthquake Epicenter. But this swampland not far from ...

Transportable Array Station 457A in Florida: first such seismic station on the U.S. East Coast. Yulee, Florida. Not a place one usually thinks of as an Earthquake Epicenter. But this swampland not far ...