The Kojo Nnamdi Show

Environmental activists are teaming up with local police to keep litter off our streets and out of our public spaces. Many lawmakers in the region have signed a "trash treaty" aiming to clean up the Potomac River watershed. But there's plenty of work left to do. Volunteers who helped clean the river last year found everything from refrigerators to car parts floating in the water. We look at why some consider littering an urgent public safety issue.