Members of the Senior Environment Corps wade into streams, peer through microscopes and teach kids how to identify aquatic critters.
One of the most recognized voices in the region, Robert spent 44 years on the air in Philadelphia, all with WMMR.
With a new analysis showing where the pollution is going, environmental advocates call on public officials to do more to stop it.
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback