In 250 million years, Earth’s continents may merge into a supercontinent so extreme that most mammals would struggle to survive.

A supercontinent is not just a bigger continent. It is a planetary-scale reorganization of land, ocean gateways, and ...

Millions of years before the Sahara became a desert, it was a vibrant ecosystem. Bordering the ancient Tethys Sea, which broke up the supercontinent Pangaea, the region was home to massive dinosaurs, ...