Scientists agreed the rocky outcrops in a remote part of Quebec, Canada, were ancient. But were they really Earth’s oldest?

A thin, yet dense, sunken ocean floor could be deep between the Earth’s core and mantle. The findings of a new study published April 5 in the journal Science Advances used global-scale seismic ...

Pieces of Earth’s rocky mantle were collected by a drilling vessel called the JOIDES Resolution about a mile beneath the North Atlantic ocean floor at an underwater mountain called Atlantis ...

At an underwater mountain in the middle of the Atlantic Ocean, scientists have drilled nearly a mile beneath the ocean floor and pulled up an unprecedented scientific bounty — pieces of Earth ...

The mantle breakthrough was part of the International Ocean Discovery Program, a research consortium of more than 20 countries using a giant ship to drill into the ocean floor and retrieve rocky ...

By placing sound recorders on the Pacific Ocean floor, ... They were instead greeted by a wide-open rocky ocean habitat with colorful anemones, sea urchins and small fish. Advertisement.

American scientists have discovered a mysterious dome-shaped specimen deep on the Alaskan seafloor, but nobody knows for sure what it is.