GEOLOGY

Scientists found a shark tooth and part of a mantis shrimp buried in the Amazon basin. Sediment cores going back 18 million years tell the rest of the story.

The Chicxulub crater is providing new clues about how life may have begun on Earth about 4 billion years ago—and point us towards how and where we can look for life across the universe.

Hydrologists have figured out where all that water has been going.

Short answer: water, plankton fossils, and hot rock.

The next time you’re feeling less than brave, remind yourself you’re already one of nature’s great success stories.

It's summer. Time to think about the science of the cubes clinking in your drink.

For much of the 20th century, scientists believed that the first settlers of the Americas could only have arrived one way.

There's a celebration for everything.

Rapid temperature cycles can stress the faces of mountainsides to their breaking point.

Hint: It wasn't made by humans.

The 100+ mile wide, 12-mile deep impression might have been left by the asteroid that killed the dinosaurs.

In some cases, no one really knows how these things stay up.