Yesterday I ran across this site, which shows how the continents of the world have drifted apart and come together from pre-Cambrian times until now. It also has maps projecting what will happen in the future. 150 million years from now, it projects, the Atlantic Ocean will have widened to the size of the Pacific, while Africa will have collided with Europe. Going farther into the future, the continents will drift back together. The American continents will subduct the Mid-Atlantic Ridge (bad news for the Azores and Canary Islands), then all the continents will join back into one about 400 million years from now.
Cool site if you’re into geography or archaeology.