For more disturbing photos of polluted areas, check out these images of China's contaminated water systems. A boy swims in the algae-filled coastline of Qingdao, Shandong province July 15, 2011.

Here's a shocking number: The world produces 1.3 billion metric tons of garbage each year. And that number is expected to double by 2025, according to the World Bank. As Earth's population ...