Every breath we take in contains 21% oxygen, the gas that makes life on Earth possible. Oxygen, in its combined oxide state, ...

How deep can humanity go beneath the Earth’s surface? The Kola Superdeep Borehole, the deepest manmade hole in the world, ...

ETH Zurich scientists confirmed that solid rock flows deep inside Earth, solving a decades-old mystery about seismic waves.

The D" layer, some 2,700 kilometers (nearly 1,700 miles) below our feet, has been mystifying scientists for decades.

The Atacama Trench, located off the coast of Peru and Chile, is one of the deepest oceanic regions on our planet, and ...

A balloon-borne experiment over Antarctica, designed to detect cosmic radio waves, has instead picked up bizarre signals that appear to be coming from deep within the ice. These signals challenge our ...

Deep sea sediments contain treasure troves of information about marine ecosystems and past climate scenarios, yet remain ...

New research reveals that Earth's core is leaking gold. Precious metals are moving from the core to the mantle and crust.

In decades of deep-sea exploration, humans have observed less than 0.001% of the deep ocean floor - an area about the size of ...

Published in Science ... one day drill deep into Martian rock to search for signs of ancient or even extant life. Until then, Earth's own subsurface remains a frontier full of discoveries waiting ...