Solar powered toilet sends self-diagnosis through mobile app

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Four and a half billion people still lack access to adequate sanitation in the developing world, which contributes to the spread of deadly diseases and millions of deaths annually. Now, a solar-powered toilet from Caltech may provide the solution. The lavatory — which recently won first prize and USD 300,000 funding at Vodafone's Wireless Innovation Project — has been in development since 2012 when it won funding from the Gates Foundation's 'Reinvent the Toilet Challenge.' As reported by Fastcoexist, Caltech's sanitation unit is particularly promising because it integrates a simple maintenance system, which minimizes the need for skilled engineers when…

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