POLLUTION: A federal court upholds the EPA’s mercury and air toxics rule, which is expected to save $90 billion a year in health costs. (Greenwire)

ALSO: University of Minnesota researchers find minority communities are disproportionately exposed to pollution from car exhaust and other sources. (Minnesota Public Radio)

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CLIMATE: The EPA finds U.S. greenhouse gas emissions have fallen 10 percent since 2005. (The Hill)

COAL: An Illinois county approves a road project related to a controversial coal mine, and a Michigan power plant has to import coal by truck because of ice on the Great Lakes. (Carbondale Southern, Platts)

FRACKING: Oil and gas companies worry about Ohio’s plan for seismic monitoring at drilling sites, and a truck driver is charged with a felony for dumping drilling wastewater in North Dakota. (Columbus Business First, Bismarck Tribune)

OIL: People who live along rail lines seek greater transparency about hazardous materials shipped by train. (New York Times)

IOWA: Two large Iowa utilities say there is more than 36 MW of customer-owned generation capacity in the state, and a congressman tours a farm-based solar installation. (Cedar Rapids Gazette, Newton Daily News)

MICHIGAN: In a video interview, Michigan Public Service Commissioner Greg White says the state’s renewable energy standard “has been successful … even more so than we anticipated.” (E&E TV)

SOLAR: A Wisconsin community solar project sells all its shares. (Renewable Energy World)

GRID: Ameren Illinois says its grid upgrades will save customers $57 million per year, consumer groups are skeptical of the figure. (Decatur Herald-Review)

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ETHANOL: Iowa Gov. Terry Branstad says the EPA will likely scale back changes to the Renewable Fuel Standard. (Cedar Rapids Gazette)

COMMENTARY: An Ohio state senator draws heat for comparing clean energy to the Bataan Death March, and how many jobs does fracking really create? (Sierra Club, National Journal)