News of a spike in wildfires in the Amazon led to an international outcry aimed at Brazilian President Jair Bolsonaro, who responded over the weekend by authorizing the deployment of 44,000 military troops to put out the fires. 

Living in areas with poor air quality increases one’s likelihood of suffering from depression, bipolar disorder and other mental illnesses, according to a new study by University of Chicago researchers.

The state had been prohibited from settings its own emissions targets for more than 20 years. Lawmakers are now expected to focus on an aspirational clean energy bill with the goal of moving Illinois to 100% clean energy by 2050.

July was the hottest month measured on Earth since records began in 1880, the latest in a long line of peaks that scientists say backs up predictions for man-made climate change.

What lies below the surface of the Chicago River today is not what it was a century ago, but pollution is still a problem. A Chicago nonprofit aims to offer real-time water quality data to the public later this year.

As they set out to learn more about kids’ affinity for nature, a group of psychologists had a strong idea about what they would find. As it turned out, their assumptions were wrong. “We were incredibly surprised,” said the lead author of the study.

A lawsuit filed Friday aims to stop a plan by the National Highway Traffic Safety Administration that would lower fines for automakers that fail to meet fuel-economy standards. 

A new law in Illinois prohibits discharge of coal ash into the environment and establishes a regulatory framework to ensure that polluting companies finance the cleanup of coal ash waste, according to the Illinois Environmental Council.

A new study offers a framework cities can use to begin measuring the mental health benefits of nature, while helping municipal planners and policymakers integrate nature into their projects. 

Gov. J.B. Pritzker and four of his counterparts in the region are urging candidates in the 2020 presidential election to back a new plan aimed at protecting the Great Lakes.

Tens of billions of gallons of untreated sewage and stormwater runoff end up in the Great Lakes each year, polluting the water and prompting beach closings and swimming advisories. How new legislation aims to help.

The massive art project that got the attention of students across the globe is part of an educational initiative aimed at preserving oceans and the people who live closest to them.

A bold plan to get hundreds of people into the Chicago River for a 2.4-mile swim remains docked for a year or so after organizers struggled to secure permits and coordinate with a number of city agencies.

Illinois residents experience roughly two days each year in which the heat index surpasses 105 degrees Fahreneit. Within roughly three decades, that number could rise to 26 days per year, according to a new report.

A federal lawsuit says Mississippi is violating free-speech rights by banning makers of plant-based foods from using terms such as “meatless meatballs” and “vegan bacon.”

The Environmental Protection Agency will soon begin removing up to 2 feet of contaminated soil from as many as 15 homes near a storage facility operated by S.H. Bell, which handles manganese and other industrial materials.