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

It’s been a very busy week underground in Maine, as there was an aftershock Wednesday morning from the larger earthquake that ...

A record-breaking deep earthquake registered in May 2015 offshore of Japan likely was not a tectonic event but triggered by a ...

The unusual holes in the ocean didn't reveal an underwater volcano or some hydrothermal vents, but rather something remarkable.