Brett Chase

“We can learn from nature to engineer sustainable solutions," says Ludmilla Aristilde, who led a scientific team identifying how to eliminate the tiniest pieces of plastic from waterways.

Some residents say Mayor Brandon Johnson should quickly move people from the encampment as he has done elsewhere in the city.

Contaminated water is pouring in to a pond at the Homewood Izaak Walton Preserve. That's led to calls for a government cleanup.

A Cook County circuit judge agreed with Attorney General Kwame Raoul, Illinois Sierra Club and Friends of the Chicago River that Trump Tower violated state environmental laws protecting the Chicago River.

The bacteria that causes Legionnaires’ disease as well as lead and copper were detected at a childcare center used by federal employees, Dirksen U.S. courthouse and at another federal office building.

Employees are demanding the problem be fixed and they want to be allowed to work from home until the water is safe.

Health officials say they saw no sign of a COVID-19 uptick after the Democratic National Convention, while attendees grumble on social media about getting sick.

A city-ordered health impact analysis of the polluted Southeast Side was appropriate, a Cook County Circuit Court judge ruled.

A phone line that's supposed to help connect the city's most vulnerable homeless populations get on waitlists for subsidized housing has been shut down for more than a month.

Johnson’s climate-fighting initiative, the Clean and Affordable Buildings Ordinance, is opposed by a majority of the City Council.