Earth's gold reservoir, deep beneath the surface, leaks precious metals through volcanic eruptions. New research shows how volcanic rocks carry gold and other metals from the core to the surface.

But we can't: The precious metal lies more than 18,000 miles below the surface. It's up to Earth, then, to dish out its gold reserves as it sees fit—a process that is slowly and surely on its way.

Earth's Surface. The Secrets of How ... to a remote site in northern Canada to collect four-billion-year-old rock samples that could unlock mysteries about Earth’s earliest history. May 16, 2025.

Although more than 99.95% of Earth's gold is locked in the molten core, tiny amounts may be coming up to the surface in magma, a study found. A lava fountain at Kilauea in Hawaii is seen in early May.

While diamonds might look pretty perched atop a ring, the rocks they hail from venture to Earth’s surface in a journey that’s anything but glamorous. Millions of years ago, ...

Earth's inner core, a hot iron ball the size of Pluto, has stopped spinning faster than the planet's surface and might now be rotating slower than it, research suggested on Monday.

Researchers from the Goethe University in Frankfurt have analyzed a rare diamond that formed 660 kilometers (410.1 miles) below the Earth's surface and was sourced from Botswana, Africa.

Changes in the sea surface height therefore point to what lies deep beneath the surface. The team focused on three types of underwater features: abyssal hills, small seamounts and continental margins.

Those "arteries" are the various oceans, bays, rivers, lakes and reservoirs that make up all water on Earth's surface. SWOT will circle the globe at an altitude of about 500 miles, traveling over ...

Scientists have discovered a previously unknown layer of Earth. The newly discovered region of molten rock sits 100 miles below the crust and covers at least 44 percent of the planet.