A few small drops of mercury can contaminate a 20-acre lake and the fish that happen to reside there, thanks to coal-fired plant emissions. That’s a major reason why the EPA’s decision to regulate the emissions of mercury, lead and other toxic pollutants from coal- and oil-fired plants is a major victory for the health and environmental welfare of the nation. And please ignore the scare tactics from Big Coal and right-wing politicos about blackouts, job losses and energy security risks as a result of the rules.