If we wait long enough, the planet is going to get rid of the desert. > For several hundred thousand years, the Sahara has alternated between desert and savann

If we wait long enough, the planet is going to get rid of the desert. > For several hundred thousand years, the Sahara has alternated between desert and savanna grassland in a 20,000 year cycle[8] caused by the precession of the Earth's axis as it rotates around the Sun, which changes the location of the North African Monsoon. The area is next expected to become green in about 15,000 years (17,000 AD).