A coalition of attorneys general and the city of Chicago is prepared to challenge the Trump administration’s environmental policies in court.

Newly released data from air monitors on Chicago’s Southeast Side shows higher levels of manganese than previously recorded, prompting renewed calls for a ban of the toxic metal, which can cause nervous system damage at high exposures. 

Chicago data scientists competed against teams from Canada and the Netherlands in an annual event that highlights the innovative use of technology to improve the water quality of the Great Lakes. 

Americans use an estimated 500 million straws each day, but a Shedd Aquarium initiative is trying to put a dent in that figure. Last week, nearly two dozen restaurants joined the effort.

A new $450,000 federal grant program partners CPS students with university professors to study the impact of toxic metals on Chicago neighborhoods. 

Chicago, Pittsburgh and dozens of other U.S. cities are standing by Paris despite President Donald Trump’s announcement last week that he will withdraw the U.S. from the landmark climate change agreement.

Chicago elected officials and environmental leaders react to President Trump's decision to withdraw the U.S. from the Paris climate accord. 

Same-day water testing conducted at UIC's School of Public Health will give Chicagoans more timely alerts about water quality at their favorite beaches this summer. 

New research from climate scientists suggests that the West Antarctic Ice Sheet could melt far more quickly than was previously thought.

Tweaking Illinois' landmark energy bill would trigger more than $2 billion in wind farm construction, a state senator says. 

A first-of-its-kind study shows that forests in Chicago face significant threats from climate change, with native trees especially vulnerable to increases in temperature, precipitation and other changes.

Legislation proposed this week in the Illinois Senate would require electronics manufacturers to pay for permanent recycling drop-off sites set up by counties.

Issues impacting the Great Lakes and communities surrounding the massive freshwater system will be at the center of a two-day conference in Chicago starting Wednesday.

An announcement last month from the EPA prompts Chicago to launch its own website dedicated to the science behind climate change.

Organizers of a clean water summit in Chicago next week hope to draft a plan for replacing the city's nearly 400,000 lead water pipes. 

A bill to protect ecologically sensitive and historic sites from players of virtual games like “Pokémon Go” has failed to gain support among Illinois legislators.