Updated at 12:45 p.m. with additional information, new state from Ameren.
The Sierra Club is following through on its threat to sue Ameren Missouri over emissions from three of the company's coal-fired power plants.
A statewide coalition of environmental organizations is urging the National Park Service to protect Ozark rivers.
Representatives of the groups were in Washington, D.C., today meeting with the Park Service.
They submitted more than 4,400 signed petitions asking the federal agency to adopt a strong management plan for the Current River and its major tributary, the Jacks Fork.
Updated at 6:10 pm to add Congresswoman Emerson's response.
An environmental group is urging St. Louis voters to approve Proposition E in the April election.
The proposition asks voters whether the city can retain the 1 percent earnings tax, which generates about one-third of the city’s budget.
The Sierra Club is encouraging St. Louisans to vote yes.
John Hickey says the earnings tax is the main source of funding for the city’s parks.
St. Louis Public Radio is a service of the University of Missouri-St. Louis.