Environment

Missouri and Illinois are among dozens of states that have yet to submit plans for improving air quality in protected areas. Environmental nonprofits are suing the EPA to compel the agency to take action.

Ameren owns thousands of acres in Illinois rights-of-way — land that biologists say they can be used to create habitats for threatened pollinators.

A spill from Marathon Petroleum unleashed around 165,000 gallons of crude oil in and around Edwardsville.

The EPA admits that nuclear waste at the West Lake Landfill Superfund site is more extensive than previously stated. The timeline to begin cleanup has been delayed due to the need for additional testing.

Buildings across St. Louis of 50,000 square feet or more must comply with new energy guidelines — or face fines of up to $500 a day beginning in 2025.

Ameren Missouri announced it will close its Rush Island coal plant in Festus over the next few years

The Biden administration is looking to redefine what it means for a body of water to be included in the Waters of the United States, which could mean new regulations for farmers.

UMSL students have organized a petition, asking the university to replant native grasses near Bugg Lake after workers mowed the grasses and replaced them with turf. Students and faculty members say the native grasses and wildflowers promote ecological diversity and bolster conservation efforts for local pollinators.

Washington University is providing University City High School teachers with tools to teach about climate change. The program could later expand to other St. Louis schools.

An event held on the banks of the Mississippi River was a symbolic step for communities in both Missouri and Illinois that routinely face similar air quality issues.