Geology

A new formation method for rare “lonsdaleite” diamonds may illuminate a better way to produce them on Earth

A diamond contains the only known sample of a mineral from Earth’s mantle—and hints at oceans’ worth of water hidden deep within our planet

A huge number of minerals’ origins are tied to life on Earth

Ice sheets amplify clues from Iceland’s hidden volcanoes

A vivid look at Iceland’s recent resurgence of volcanic eruptions—and why the country could be in for 300 years of renewed volcanic activity

Building the ultimate sandcastle

“Estuaries” from the ocean onto the ice can cause fractures and contribute to sea-level rise

Deep vibrations called infrasound can provide an early warning of ice avalanches’ speed and trajectory

For a field of science that has long recognized the need for diversity, geoscience has moved at a glacial pace to achieve it

The surprising find has never shown up in nature before and reveals secrets about the earth’s mantle

These stunning patterns have an unlikely designer

The planet’s spin may have mediated critical atmospheric oxygen