surely there must be a way of harvesting all that shit so it powers the boats? There must be a way of capturing the crap, fermenting it and reaping the resultant methane. With a billion people, India has a national natural resource, a natural renewable resource that could be a significant factor in reducing greenhouse gas emissions. At present all that shit decomposes, producing methane and sulphides, but if you burnt it to generate power you'd get rid of the methane. OK you'd produce CO2, but that would simply replace the gas produced by burning fossil fuels - and India's remaining forests.
India has a valuable resource pile of shit that is going to waste. Indeed, properly harvested and used, India's future economic development could be based on crap.