A Bangladeshi child worker Alim, 11, takes his bath inside of a tannery at Hazaribagh area, in Dhaka, Bangladesh. In 2013, the Zurich-based Green Cross Switzerland and the New York-based Blacksmith Institute published a report on the most polluted places in the world. The report “The Top Ten Toxic Threats, Clean Up, Progress and Ongoing Challenges,” puts Hazaribagh at number five. Each day in Hazaribaugh, more than 5,000 gallons of hexavalent chromium is dumped into the Buriganga River.