Litter, pollution, and sewage, oh my! The Hudson and East rivers in New York City are hardly ideal swimming holes. That may be changing soon though, with the introduction of the +Pool. A floating, olympic-sized swimming pool that runs the filthy river water through three levels of filtration before using it to fill the pool. In the process, nearly 500,000 gallons of clean water will find it's way back into the river. What a concept!
Read more here!