Cook County is more than halfway through a multiyear project that aims to make solar energy more affordable for residents.

The decadeslong fight to clean up the Chicago River took a step forward last week with the resolution of two lawsuits targeting phosphorous discharge that has polluted waters from Chicago to the Gulf of Mexico.

Dozens of Chicago activists met last week to plan a defense of environmental policies that appear vulnerable under the administration of President Donald Trump.

Organized by the nonprofit Center for Biological Diversity, Earth2Trump is a series of rallies aimed at building “resistance to all forms of oppression and all attacks on the environment,” the group states.

Donald Trump is no friend of the environment. And based on new energy use data from the city, neither is his trademark Chicago skyscraper.

Motorists will be without a single testing center within Chicago city limits starting Nov. 1.

Some farm groups are criticizing a new report about the hazards of atrazine, a herbicide that was banned by the European Union more than 10 years ago.

The Environmental Protection Agency recently installed a park bench equipped with air pollution sensors at a CPS elementary school. It's one of just seven such benches in the U.S.

The disaster in Flint has spotlighted the dangers and adverse health outcomes of lead seeping into communities’ drinking water. Elizabeth Brackett reports on the lead pipes carrying water into Chicago and suburban homes. 

The disaster in Flint has spotlighted the dangers and adverse health outcomes of lead seeping into communities’ drinking water. Elizabeth Brackett reports on the lead pipes carrying water into Chicago and suburban homes. 

Michigan Gov. Rick Synder is facing calls to resign over his administration's bungled handling of the contaminated water crisis in Flint. A former high-ranking official at the Environmental Protection Agency tells us what she thinks went wrong.

A new energy initiative is encouraging area residents to get smart—by purchasing so-called smart thermostats–under a new rebate program that aims to cut heating costs. Will homeowners warm up to what is planned to be the country's largest smart energy initiative? We'll discuss the ambitious program with our panel of guests.

President Obama's Clean Power Plan aims to reduce carbon emissions 32 percent by 2030. It's the administration's "biggest, most important step" in combating climate change. We take a closer look at the new policy, the legalities and how it will impact the state and consumers.

The EPA has awarded more than $8 million in grants to combat invasive species in the Great Lakes. We talk with the Shedd Aquarium's Phil Willink about the $100 million a year invasive species problem.

The Environmental Protection Agency sampled a small number of Chicago homes and found higher levels of lead where water pipes were disturbed by street work and plumbing repairs. We have analysis. Read the EPA study.

Plans were announced Monday to make the Chicago River the city’s next recreational frontier, with four new boathouses serving as anchors of the river’s future development.