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%excerpt% Continued here: 9-9-9 Could Slam Businesses

In remote areas where clean water is scarce, Sarvajal's water-dispensing ATMs provide a cheap solution.

The Hippo Roller has made life easier for thousands of water-starved people--but it's very expensive. The WaterWheel--designed to solve the water crisis in India--is the next generation of wheeled water carriers. Not everyone can just turn on the tap to access clean water; in the developing world, women regularly carry five-gallon, 42-pound buckets of water on their heads.

Photograph by Benjamin Lowy Opportunity: After fleeing marriage to a Taliban husband, Samiya Amiri found work--and the beginning of a new life--as a renewable-power engineer.