In tonight's Scientific Chicago, Ash-har Quraishi tells us about some of the technologies that are being considered to disinfect wastewater released into the Chicago River.

There's a new push to increase recreation on the Chicago River. But when will it be safe enough to swim in? And how much will the cleanup cost? We talk about the river's future.

Plans were announced Monday to make the Chicago River the city’s next recreational frontier, with four new boathouses serving as anchors of the river’s future development. 

Mayor Daley isn't sure about the U.S. Environmental Protection Agency's recommendation to make the Chicago River clean enough for swimming. Eddie Arruza and his panel discuss the recommendations, and much more.