Thursday, August 4 is the final day for public comment on the Environmental Protection Agency’s (EPA) plan to limit mercury emissions from coal and oil-fired power plants. Two decades overdue, the proposed regulation would capture 91 percent of airborne mercury before it leaves the smokestack.

Despite widely available and proven technology, power-plant mercury currently floats unregulated beyond the reach of the Clean Air Act. While the utilities industry has delayed regulation through lobbying and court challenges, I have watched upwind construction of more than 20 new coal-fired generators over the past 20 years. Read more