Rio: Pollution Rife Amid U.N. Environment Conference

Rio: Pollution Rife Amid U.N. Environment Conference

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For the 50,000 visitors from 190 countries streaming in for the U.N. Conference on Sustainable Development, the welcome in Rio is a rank reminder of just how hard it will be to balance economic growth and environmental protection elsewhere across the globe. Rio, the host city, suffers from devastating and daunting air and water pollution.