Paleoclimate and archaeological evidence tells us that, 11,000-5,000 years ago, the Earth's slow orbital 'wobble' transformed today's Sahara desert to a land covered with vegetation and lakes.

These animals are best adapted to vast expanses of grassland with scattered trees, where the climate is hot, year-round. Savannas cover almost half the surface of Africa and large areas of ...

The savanna (sometimes mistakenly spelled as "Savannah," which is in the state of Georgia) describes an African region with ... resulting in long periods without rain. Limited seasonal water ...