Mother Nature Network: From the largest urban rivers to the tiniest undisturbed creeks, nearly 2,000 locations in rivers and streams across the country were sampled by the Environmental Protection Agency (EPA) in 2008 and 2009. The findings, published in the National Rivers and Streams Assessment 20082009, paint a dismal picture of the state of the nations waterways. The study found that more than 55 percent of our rivers and streams are in poor condition, posing health risks to fish, other wildlife and humans. Meanwhile,...