You might not know about stormwater pollution, but it is happening right where you live—and harms people and wildlife. Discover how stormwater picks up pollutants and ends up in rivers, streams, brooks and ponds. You might be surprised to learn about the invisible system of storm drains right under our streets.

What are people doing to help reduce stormwater pollution? Find out and then speak up. This event is part of the Cambridge Science Festival.