Water, or the lack thereof, is one of the defining challenges of the 21st century. As temperatures rise and droughts become more frequent, the threat of dwindling water resources worries not just environmentalists and governments but companies and their investors, too. ... Read more about A One-Stop Shop for Water Worries
A large cistern in the ancient city of Resafa, Syria, was filled by channeling periodic floods from a wadi west of the city. The use of complex systems for directing and harvesting water dates back thousands of years. Photo from “Ancient Water Harvesting Methods in the Drylands of the Mediterranean and Western Asia,” Brian Beckers et al., eTopoi, 2013.