geology

Standing around 325 feet tall from peak to base, Chimney Rock looms like a lighthouse on the Great Plains—and had a starring role in a popular video game.

See the satellite photo that just confirmed the existence of an extremely rare lava lake on a remote island.

Archaeologists aren't sure how ancient people moved the rocks used to make Stonehenge 4000 years ago. But now, part of the mystery has been solved.

When you really think about how recent some discoveries we take for granted are, Pluto and Clint Eastwood have a lot in common.

They formed when a crater hit the spot 15 million years ago.

She thought she had dug up a piece of glass.

The continents are going to look very different 50 million years from now.

If you have a cell phone in your pocket or dirt on your shoes, you’re carrying silicon.

Earth as captured from near the lunar horizon by the Lunar Reconnaissance Orbiter in 2015.

Let's review why and how we've known for at least 2300 years that the Earth is round.

The beach is wonderful when it's not giving you third-degree burns.

Talk about striking gold.

R. Sieben, Wikimedia Commons // CC BY 3.0

In March, it erupted for the first time since 2014—and has erupted six more times since.

We tried to bomb lava into submission. It didn't work.

A volcano erupts on the Pacific island of Vanuatu, part of Earth's Ring of Fire.

Whether they're minor eruptions or cataclysmic explosions like Vesuvius, Tambora, and Krakatau, volcanoes have had a major impact on the world's climate and history.