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(Courtesy Friends of the Chicago River)

The structures, which look like doghouses without doors or windows, rest atop 12-foot stilts and can accommodate as many as 2,000 bats. Is this the year the bats will move in?

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Lincoln Yards artist’s rendering (Courtesy Sterling Bay)

A former industrial corridor along the North Branch of the Chicago River could be turned in to the city’s newest entertainment district. Rock critic Jim DeRogatis sounds a warning.

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As the weather gets nicer, Chicagoans and tourists are expected to flock to an increasingly popular destination: the Chicago River and attractions along its main branch. But has it become too congested?

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(Erica Gunderson / Chicago Tonight)

Keeping the river clean is no easy task, particularly during the summer months when the river is bustling. We spend a morning with one of Chicago’s trash-scooping river skimmers. 

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(Richard Schneider / Flickr)

The mayor outlines major projects to expand recreation along the Chicago River. Why some aldermen say it’s not enough.

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Conservationists have installed five bat houses in Cook County since 2016 to provide safe maternity colonies where female bats can give birth and nurse their pups. (Courtesy Friends of the Chicago River)

Three years after they began installing bat houses along waterways in Cook County, conservationists are hoping the bats will start moving in this year.

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(Chicago Tonight file photo)

The Chicago River is cleaner today than it has been in generations, but “cleaner” is a relative term. One local advocacy group wants the city to aim for a trash-free river.

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Geoffrey Baer floats through a bygone colony of houseboats that once populated our city’s favorite Y-shaped waterway in this encore edition of Ask Geoffrey.

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Workers from the Environmental Protection Agency respond to an oil spill Oct. 26 at a fork of the Chicago River known as Bubbly Creek. (EPA)

The EPA likely won’t be able to determine the source of a late October oil spill in the Chicago River because the agency was notified about the spill two days after it occurred, the EPA said Tuesday. 

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Geoffrey Baer gets ready for a new voyage along the Chicago River with viewer questions about the history of our city’s favorite Y-shaped waterway.

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Workers from the Environmental Protection Agency respond to an oil spill that was reported Oct. 26 at a fork of the Chicago River known as Bubbly Creek. (EPA)

Officials responding to last week’s oil spill in the South Branch of the Chicago River have recovered dead wildlife from the water, including 43 fish and four turtles. The source of the spill is still unknown, according to the EPA. 

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Workers from the Environmental Protection Agency respond to an oil spill Oct. 26 at a fork of the Chicago River known as Bubbly Creek. (EPA)

The EPA says the source of an Oct. 26 oil spill remains unknown, but cleanup efforts continue this week along the 1.5-mile stretch of the south fork of the South Branch of the Chicago River.

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Flooding in Albany Park in April 2013 (Center for Neighborhood Technology / Flickr)

There are more soggy days ahead. Find out how you can help ease the burden on the Chicago River and reduce the risk of flooding.

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Hundreds of anglers participate in the #ChicagoFishes event Oct. 13 to celebrate decades of cleanup efforts to the Chicago River. (© Shedd Aquarium)

An American eel caught by a 5-year-old angler last week is possibly the first such eel ever recorded in the Chicago River, according to the Illinois Department of Natural Resources.

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A duck found dead in the Chicago River. (Courtesy of Friends of the Chicago River)

Dozens of mallards have been found dead over the past month in multiple locations along the Chicago River, marking what one expert says is the largest occurrence of birds dying in the river in decades.

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There’s a new floating attraction along Chicago’s Riverwalk. We go for a look.

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