They can look desolate, generally containing few or no trees, except in areas along rivers and streams. But they are vibrant ecosystems, and some, like the African savanna, are home to the animal ...

or a savanna. 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 ...

Exposed after years of wear by the adjacent river, the Red Rocks offer a stark contrast to Kruger's trees and savanna grasslands. Plus, these sandstone slabs are regularly visited by must-see ...