Debate and dissent over how Illinois should spend its share of the Volkswagen diesel emissions payout.

Test results from soil samples collected at 27 homes near a bulk storage facility along the Calumet River reveal high levels of manganese.

A group of U.S. senators are trying to preserve regulations for the disposal of coal ash generated by coal-burning power plants, a mixture that can pollute drinking water if disposed of improperly. 

An accident in the Straits of Mackinac is raising new fears about a possible oil spill disaster in the Great Lakes.

Chicago is the country’s 22nd most polluted city, according to a new study of air pollutants by the American Lung Association. 

In an effort to reduce plastic waste, the White Sox have become the first team in Major League Baseball to get rid of disposable straws for nearly an entire season.

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. 

A bill that supporters say would make fracking operations in Illinois more transparent cleared its first legislative hurdle last week.

A coalition of states and cities sue the EPA over its regulation of emissions of methane, a potent greenhouse gas that contributes to global warming. 

For the first time, Shedd Aquarium will host a full week of events leading up to Earth Day on April 22. 

An ordinance to protect residents from a potentially brain-damaging pollutant is passed by the City Council. But does it go far enough?

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.

Air pollution kills more than one million people every year in India. A team of Chicago students are now developing an app they think will give Indians the tools needed to confront the deadly problem.

A brain-damaging pollutant found at high levels near thousands of Southeast Side homes would be banned at future industrial sites under a new ordinance introduced by city officials Wednesday.

Recently introduced legislation would update Illinois’ fracking law to increase protections for land owners and require more information from oil and gas companies applying for fracking permits.

Despite a commitment from the state’s top environmental official, Illinois EPA will not hold public meetings to gather input on the state’s plan for spending $107.8 million in Volkswagen settlement money.