Heart of Dryness: Climate Change Coping Strategies

Since the dawn of Homo sapiens in arid Africa, nine tenths of our evolution has unfolded as foragers. Only relatively recently did our species embark on agriculture, and recent events suggest certain limits to that extraordinary experiment. Exponential population growth has combined with unprecedented climate change until half the planet’s land surface can now be classified as drylands—arid landscapes inhabited by a third of humankind.

Yemen Uncovers Buried Water

hadhramautvalley After four months of exploration, engineers in Yemen have found an important new source of high-quality water.