If you're new to this site, you may be wondering: "so just what do Riverkeepers do?" There are many answers, but one answer we like giving is: "we stop polluters." In the video below, you'll get a good idea how that's done. Watch as Brent takes you past the pollution-laden entrance of the D&L coal site in Luke, MD, proving once and for all that the site contributes to pollution in the North Branch of the Potomac River.