The United States hasn't always had the closest relationship with China or Russia. But give us a few hundred million years, and we could be a lot more unified: A new prediction for the motion of the continents suggests that the Americas and Asia will smoosh together at the north to form the supercontinent dubbed…
The Rockies are a geological mystery, a massive mountain range located far away from the nearest continental plate boundary. So without crashing plates to push the Rockies out of the ground, how did they form? The answer might be suction.
Earth's continents are constantly changing, moving and rearranging themselves over millions of years - affecting Earth's climate and biology. Every few hundred million years, the continents combine to create massive, world-spanning supercontinents. Here's the past and future of Earth's supercontinets.