If this Africa-wide theory were true, then early humans must have figured out how to live in many environments beyond ...

There’s also the forest buffalo, the West Africa savanna buffalo ... with humans because of their size and aggression. In East Africa, buffalo are known to break fences and tear through crops.

Savannas cover almost half the surface of Africa and large areas of Australia, South America and India. So what makes a savanna special? One important factor is they have a wet season, lasting for ...