A big part of East Africa is breaking away from the African continent. There is a long, deep crack in Zambia. The crack is called a rift. Scientists said there was evidence that the rift is active and that other rifts are too. This may be a sign of the break-up of sub-Saharan Africa.

Land on Earth is always moving. Three hundred million years ago, there was one supercontinent. Over millions of years, it broke up to become today's continents. Rifts are one reason why continents split apart. The rift in Zambia is moving very slowly. It will take millions of years for Africa to split in two.