A new study adds evidence to the theory that Earth hosts a sixth ocean miles beneath our feet. The Atlantic, Pacific, Indian, Arctic, and Antarctic oceans are both familiar and observable, laying in ...

Stanford University researchers have pulled back a curtain on a hidden part of Earth that rarely makes headlines. Their new ...

Scientists have spent decades cataloging life on Earth’s surface, from rainforest canopies to ocean trenches. But a growing body of research now shows that a vast, hidden biosphere thrives kilometers ...

Modern continental rocks carry chemical signatures from the very start of our planet's history, challenging current theories about plate tectonics. Researchers have made a new discovery that changes ...

A team of British scientists has set sail on a voyage to examine why a huge chunk of Earth's crust is missing, deep under the Atlantic Ocean--a phenomenon that challenges conventional ideas about how ...