Green Side Up: Green Roofs Sprout Around PIttsburgh

In recent weeks, the Allegheny Front Radio Program has looked at problems Pittsburgh's rainy region has with keeping waterways free from polluted runoff.

Some say that one way to steer rain out of infrastructure and away from rivers is to construct green roofs. The Allegheny Front's Kara Holsopple takes a tour of a green roof and looks at what else might be in store for the region.

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