Travel into the heart of the slum made famous by the Oscar-winning "Slumdog Millionaire" -- Dharavi, in Mumbai, India. In this squalid, pest-ridden place with irregular water, intermittent electricity and open sewers, one million people are squeezed into just one square mile. But beneath the surface is a city with its own multimillion-dollar recycling industry and neighborhoods where ordinary people work hard to make a better life for t
