Iowa power plants and other business cut their emissions of pollutants by nearly 20 percent last year. While that is good environmental news resulting from the boom in wind power and the switch from coal to natural gas at power plants, it put a pinch on the state air-quality bureau's budget. That's because the bureau depends on per-ton fees on emissions. So the Iowa Department of Natural Resources has proposed a 3.7 percent increase in fees to support a budget for the year beginning July 1 that would be 13.8 percent lower than this year's. That would leave the department with nearly $1.4 million to cut from its budget. The details are here.