Located in the heart of the Indian metropolis of Mumbai, Dharavi is one of the world's most densely populated slums; home to nearly 1 million people. Made famous by the film "Slumdog Millionaire", Dharavi is set to be transformed by a major redevelopment plan that will build skyscrapers, sanitation systems, parks, schools and hospitals. But this massive project requires the relocation of part of its population and is causing concern among the thousands of residents who have lived and worked in D