Powered by the sun, it breaks down waste, turns it into useful gas and powers fuel cells. This toilet, made to help the developing world, won 1st prize in the 'Reinvent the Toilet Challenge'.
Analysts say the data show the complex contradictions of the Indian system. They say the census reveals a country where millions have access to cutting-edge technology and consumer goods but a much larger number of poor who lack access to even basic facilities.
