The Great Los Angeles River CleaUp hosted 3000 volunteers who pulled 22 tons of trash out of the river by hand -- waste equal to the weight of 11 automobiles.
Jenny Price, environmental writer and L.A. river tour guide, explains the history of the river to Los Angeles, and how revitalization could be used to change the city's urban landscape.
Flocks of Black Neck Stilts head down to the "wetlands" of the Los Angeles River in the spring where you can find them feasting on the algae clumped on the concrete in Downtown L.A.
Dan Cooper, an authority on California bird identification and ecology, has spotted species near the river that haven't been seen for over a century, hinting that revitalization of the area is on the right track