Earth may not have seven continents after all. From the earliest of grades, schoolchildren around the world have memorized ...

It appears that the lithosphere, which is the rocks on the outside of the world, has a pretty significant role to play in why ...

Plate tectonics can move continents ... Tharp argued this indicated that the ocean floor was expanding. Rifts and ridges The world ocean floor map created by Marie Tharp and Bruce Heezen in ...