W.F. Strong points to how geological features defined over a century ago hold lessons for water challenges in the future.

Changes of vegetation between humid and arid phases in North Africa. Vegetation zones are based on the minimum precipitation requirements of each vegetation type. Disclaimer: AAAS and EurekAlert!

The Sahara Desert, known today for its vast, arid landscapes, was once a fertile region teeming with life. A recent study analyzing stalagmites from caves in southern Morocco has revealed that between ...

Cocoa is made from the beans of the cacao tree, which thrives in humid climates ... of once-productive landscapes into increasingly arid regions, with consequences that ripple across ecosystems ...