Australian cities have turned to some very costly solutions when water is scarce. But as the world's second-highest users of water per person, more efficient use and recycling are key.
States, including Colorado, restrict the use of rain barrels. A water law scholar says a better way to conserve is reduce waste from big – and powerful – water users.
Geosciences can be a valuable tool in the fight to provide Sub-Saharan Africa with safe drinking water.
Built-up urban environments transform the resource of rainwater into wasted runoff. Low Impact Development mimics nature to help get stormwater into the natural water system.