We know that the continents are moving slowly due to plate tectonics, but continental drift only pushes the tectonic plates past each other.

3,200 miles beneath Earth’s surface lies the inner core, a ball-shaped mass of mostly iron that is responsible for Earth’s magnetic field.

Sixty-three percent. That’s the proportion of mammal species that vanished from Africa and the Arabian Peninsula around 30 million years ago

Lava samples have revealed a new truth about the geological make-up of the Earth’s crust and could have implications for volcanic eruptions

Explorers have uncovered eight additional miles of passageways inside Kentucky's Mammoth Cave. Officials say there could be more to find.

Exciting new research has revealed that a drop in atmospheric carbon dioxide caused a dramatic cooling 133 million years ago

There might be a quadrillion tons of diamonds 100 miles below Earth’s surface. But the farthest we’ve traveled is 7 miles down.

NASA has confirmed that its Perseverance rover has succeeded in collecting its first rock sample on Mars.

Research teams that studied an ancient supervolcano in Indonesia found such volcanoes remain active and hazardous for thousands of years

It takes hard work to be a farmer, that is until you get a half-ton sapphire out of the ground when you are digging a well.

A new study reveals the complex history behind one of the Grand Canyon’s most well-known puzzles called the Great Unconformity.

A new technique for processing lunar radar data has allowed scientists to see what lies beneath the surface of the moon in detail.