A deep-sea exploration off the coast of Hawaii has revealed a striking natural formation on the Pacific seafloor that’s left marine scientists momentarily speechless: a structure resembling a “yellow ...

The human-occupied vehicle Alvin, during a dive on the East Pacific Rise, collected samples and recovered instruments placed at the vents during previous expeditions. Woods Hole, Mass (October 13, ...

departs Tromso, Norway, July 31 for a two-month cruise across the Arctic Ocean, scientists won’t be studying the ice cap but the seafloor far below.

A new analysis of rocks thought to be at least 2.5 billion years old by researchers at the Smithsonian's National Museum of Natural History helps clarify the chemical history of Earth's mantle—the ...