Plate boundaries are where the action is. A large fraction of all earthquakes, volcanic eruptions, and mountain building occurs at plate boundaries. It is also where most of the people on Earth live.

The solid ground that we all live on forms a thin crust around the Earth. It’s no more than 50km thick - and it’s just the upper part of the lithosphere. Below it is the upper mantle. It’s mostly ...

Investigating the causes and consequences of volcanoes and featuring case studies from the Canary Islands, The Democratic Republic of the Congo and Iceland. Below Earth’s surface, in the upper mantle, ...

Earth’s eighth continent, Zealandia, has been largely unrecognized and “missing” from maps for 375 years. This mostly underwater landmass, spanning about 4.9 million square kilometers, challenges ...

Scientists have identified a long-lost tectonic plate in the west Pacific Ocean. Called Pontus, the 'mega-plate' was once 15 million square miles, about a quarter the size of the Pacific Ocean today.