A mountain lion, also known as a cougar, puma or panther. (Nicky Pe / Pexels)

A mountain lion that ventured into Illinois has met with a tragic end, confirmed to have been struck and killed by a vehicle on I-88 in DeKalb County on Sunday, the Illinois Department of Natural Resources has announced.

The Old State Capitol in Springfield. (Google Streetview)

Between 1841 and 1872, the building served as the seat of Illinois Supreme Court, during which time justices heard several cases linked to Illinois' Underground Railroad.

Illinois National Guard soldiers move sandbags through flood waters at East Cape Girardeau, Illinois, on June 12, 2019, as they construct a sandbag levee to control flooding in the community. (Barbara Wilson / Illinois National Guard)

Illinois officials are about to release a draft of the first comprehensive overhaul of the State Water Plan in 40 years, with climate change among the critical issues the document is set to address.

(WTTW News)

Illinois is rebranding Asian carp as “copi” in a bid to get people to eat the invasive fish into submission. Fishermen are catching thousands of pounds a day and barely making a dent in the number of carp in waterways like the Illinois River, where it's estimated 20 million to 50 million could be harvested annually.

Asian carp on ice. (WTTW News)

A stalled movement to give the invasive Asian carp a more palatable name has regained momentum, and the big reveal is now set for June 22.

(Yanna Zissiadou / Unsplash)

The greatest risk of bird flu outbreaks has passed, wildlife officials said. Poultry owners need to remain vigilant, though, and feeding ducks and geese should be avoided.

Just 4% of Illinois is officially protected. Nature preserve status is the highest level of protection available in Illinois. (Patty Wetli / WTTW News)

Illinois has made a commitment to conserve 30% of the state’s land and water resources by the year 2030. What will it take to reach that target?

A bighead carp, like the one caught in the Humboldt Park lagoon. (Evan Garcia / WTTW News)

When a fish the size of a 10-year-old child was pulled from the Humboldt Park lagoon earlier this month, the reaction quickly went from “Oooh” to “Uh-oh.” The angler had reeled a whopper of an invasive bighead carp accidentally stocked 20 years ago. Are there more?

Construction on the Rockford Airport cargo expansion has come right to the edge of Bell Bowl Prairie. (Courtesy of Cassi Saari)

Supporters of the movement to save Bell Bowl Prairie, a small patch of rare remnant prairie situated within the boundaries of Chicago Rockford International Airport, say they have a simple solution that preserves the prairie and allows the airport to expand: Just move a road.

Bell Bowl Prairie, a high-quality remnant of Illinois prairie, located within the boundary of Chicago Rockford International Airport. (Courtesy of Cassi Saari)
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Conservationists are in a race against the clock to save a five-acre patch of rare Illinois prairie from being bulldozed as part of a 280-acre expansion of the Chicago Rockford International Airport's cargo operation.

(Pixabay / GeorgeB2)

Hundreds of songbirds have died in Indiana from a mysterious illness, prompting wildlife officials in that state to ask residents to remove all bird feeders. Officials in Illinois say they have yet to receive reports of similar infections.

(WTTW News)

At the end of June, Illinoisans will no longer hear the words “Asian carp.” After several years and hundreds upon hundreds of millions spent trying to keep them from the Great Lakes, how can that possibly be? We explain.

(Hashan / Pixabay)

It's mating season for deer, which means more are on the move at dawn and dusk — prime time for deer-vehicle collisions. Cook County led the state in 2019 with 472 crashes.

Black bear. (Jitze Couperus / Flickr)

Officials are telling people to keep their distance from the bear. People aren’t listening.

Campgrounds at Illinois state parks are reopened, with new guidelines in place. (Kelle Cruz / Flickr)

First of all, take note that “reopened” doesn’t mean “back to normal.” Guidelines, including limiting campsites and campfires to registered occupants, are in place.

Two months after becoming the first company approved for fracking in Illinois, Woolsey Operating Company has withdrawn its permit.