Geology

Earth's crust once formed a dense "root" supporting Colombia's northern Sierra Nevada de Santa Marta mountains, but new research suggests this prop sank into the mantle millions of years ago.

Researchers uncovered fossils of multicellular eukaryotes that are over a billion years old.

Fjords, many of them sculpted over many ice ages, can form all over Earth. So why does Norway have so many?

Giant exploding craters only known to exist on Russia's permafrost-covered Yamal and Gydan peninsulas may result from a specific set of conditions not found elsewhere in the Arctic.

The Indian plate may be peeling into two as it slides under the Eurasian plate, tearing Tibet apart in the process.

Diamonds seem to reach Earth's surface in massive volcanic eruptions when supercontinents break up, and they form when continents come together.

Scientists have identified three definitive supercontinents in Earth's history and predict the landmasses we live on today will come together again in the future.

Diamonds erupt from the deep as supercontinents break up. Now you can listen to the "song" of these kimberlite eruptions.

Enormous for its time period, this newly discovered marine worm likely ruled the seas at the top of the food chain.

Earth's core isn't exactly aligned with its mantle, which results in a cyclical wobble, new research finds.