A systematic satellite survey of Sudan’s Atbai Desert has identified hundreds of monumental circular stone tombs belonging to a cattle-herding culture that left no written records and has largely ...

"The Illustrated Flora of Burkina Faso and Mali" is the first comprehensive documentation of the remarkable plant diversity in these two west African countries. In a recently published paper, a ...

When you think of deserts, you might envision isolated wastelands confined to single nations. Yet the world's most massive arid regions defy political boundaries, sprawling across continents and ...