Santosh Ostwal's Mobile phone activated irrigation pump

This is inspiring stuff. From Economist:

SANTOSH OSTWAL, husband and father of two, lost his apartment in 2001 after quitting his job in Pune to solve an engineering problem he'd been thinking about for twenty years. Today his solution - a mobile-phone adaptation that triggers irrigation pumps remotely - is saving water in India and helping more than 10,000 farmers avoid several taxing, dangerous long walks a day.

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