Want to Help Developing Countries? Sell Them Good Stuff — Cheap | Magazine:
The Tata Group, India’s version of Acme and maker of the supercheap Nano automobile, recently introduced a $22 water purifier that works without electricity or running water. (Every few months it needs a new $6 filter.) A big-hearted, philanthropic, and important effort? You bet—cue the somber stats about preventable waterborne diseases. But check out the size of the market for a product like that: Some 900 million people worldwide lack access to clean water, 200 million of them in India alone. Tata is saving lives and making a killing.