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The world's largest solar cooking system is in India, at the Shirdi temple where 100,000 people make a pilgrimage each year. 73 solar dishes are on the rooftop, generating enough power to cook gigantic industrial sized vats of food. No gas, no firewood, no kerosene, no fossil fuels - and they save almost $7,000 per month in cooking oil. Truly a miracle! --Bibi Farber This video was produced by CNN.