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.

With nearly $300 million in federal funding on the chopping block, leaders from across the Great Lakes region will convene next month in Chicago to address lead poisoning, oil pipelines and other threats to the area’s waters.

A study co-authored by Northwestern University climate expert Daniel Horton outlines a framework for measuring the impact of global warming on extreme weather events. 

Studies estimate that more than 100 billion plastic bags are used annually in the U.S. But in Chicago, many shoppers have switched their habits since the start of the city’s tax on plastic and paper bags, a new study shows. 

About 100 East Chicago residents and activists rallied and marched Wednesday while EPA head Scott Pruitt visited the city's lead-contaminated neighborhoods.

The head of the Environmental Protection Agency told residents in East Chicago on Wednesday that the agency had no plans to close its Chicago office. 

A spill last week at a U.S. Steel site in Northwest Indiana released an unknown amount of a potentially carcinogenic chemical into a Lake Michigan tributary, prompting the closure of three beaches at Indiana Dunes National Lakeshore.

With an eye toward Earth Day, Shedd Aquarium has launched a campaign encouraging people to switch from single-use plastic straws to reusable or biodegradable alternatives.

In 2015, Chicago air pollution reached elevated levels for a total of 151 days, a new report shows, increasing the risk of premature death, asthma attacks and other negative health effects for city residents.

Mayor Rahm Emanuel announced Sunday a commitment to transition the city’s municipal buildings and operations to 100 percent clean and renewable energy by 2025.

A community group has drawn up a plan to guide redevelopment of a heavily industrialized area in Chicago.