The city’s lawsuit comes a week after attorneys at the University of Chicago filed their own lawsuit against the steel corporation. “This Great Lake is our most precious natural resource and we must preserve and protect it,” Mayor Rahm Emanuel said in a statement.

The group Crate Free Illinois is calling on Trader Joe’s to stop purchasing pork from suppliers that use gestation crates, tight metal stalls that keep pigs in one position for the majority of their lives.

The latest social media craze of matching your face with faces in works of art left Chicagoans out in the cold, thanks to Illinois’ strict laws on biometric data. Do these rules keep us safe or leave us behind?

Ramar, one of the oldest gorillas in the country, celebrated a milestone birthday this month with a frozen “cake” filled with fruit and raisins. 

How would Illinois residents be notified of a nuclear threat – and where should they seek shelter if an alert was issued? We speak with the Illinois Emergency Management Agency. 

An environmental nonprofit represented by University of Chicago lawyers filed a suit Wednesday against U.S. Steel over Lake Michigan pollution.

A fireball streaked across the Midwestern sky Tuesday night, creating a sonic boom. An Adler Planetarium astronomer tells us more about this rare celestial fireworks display.

After a public call for Apple to make its smartphones less habit-forming, we take a look at internet addiction in a digital age.

A nonprofit group working with the University of Chicago is poised to sue U.S. Steel over Lake Michigan pollution if a deal is not reached by Sunday between the company and environmental regulators.

Brookfield Zoo welcomed a newborn gray seal on Dec. 26. The male pup weighed 36 pounds at birth and is expected to weigh more than 120 pounds by the time he is weaned at three weeks. 

A team led by Field Museum conservation ecologist Corine Vriesendorp has worked for 15 years to protect one of the most biodiverse places on Earth. This week, it was designated as a national park.

The commercials for do-it-yourself DNA testing kits promise a bounty of self-discovery about your history and health. But are you prepared for the results?

Brookfield Zoo is leading a first-of-its-kind study to collect data from dolphins and other aquatic mammals using a Fitbit-like device that figures to revolutionize human understanding of the animals’ behavior.

They are the oldest forms of life on Earth and without them humans would not exist. How microbes shape the planet and its people.

If scuba diving with whale sharks or kayaking past glaciers sounds like you’re kind of thing, Shedd Aquarium has a trip for you this year.

Public and abandoned properties in the Chicago area might appear a little less cluttered. The Illinois EPA collected 598.5 tons of used tires in December as part of a state program to mitigate hazards associated with them.