Earth’s crust looks solid from the surface, but it is broken into a shifting mosaic of slabs that slowly rearrange oceans and continents. Understanding how those tectonic plates first formed is one of ...

Pangea may have vanished 200 million years ago, but it left a trail of clues in rocks, fossils, and even magnetic fields that still stitch the continents together. From identical mountain belts to ...

New isotopic evidence is rewriting the story of Earth's first continents. Imagine the planet nearly 3.8 billion years ago: a ...