which occupies a critical ecological niche between Africa’s lush tropical forests and its arid Sahara sands. There the animals gather in herds to graze low-lying meadows with access to permanent ...

The semi-arid Kalahari Desert stretches over parts of Namibia, South Africa, and Botswana. It’s an ecological wonderland that ...

Animals such as crocodiles, equids, hippopotamids, proboscideans, were likely sustained by rivers and lakes that were largely absent from today's arid landscape. "These wetter conditions likely ...