Canadian wildfire smoke no longer lingers in Michigan as of July 18. Southwest Michigan will experience unhealthy air for sensitive groups on July 21.

President Trump exempts 25 chemical plants, including Dow, from new EPA pollution rules, citing national security and economic concerns.

After more than two decades of lawsuits and pressure applied by tribes, states and environmental groups, the EPA imposed a rule last year requiring the state’s six taconite mines and processing plants ...