Six years ago, Mayor Richard Daley of Chicago vowed to make his city’s government a leader in the effort to fight global warming. He promised to cut greenhouse gases 4% during the last few years by planting green roofs, buying renewable energy, and making building more energy efficient. But according to the Chicago Tribune, city government emissions have soared during that time, mostly due to demand for electricity that has been higher than the target baseline. All this shows that cutting energy use is not as easy as simply giving political speeches, but it might be even worse for residents of the Windy City if they are actually forced to pay for emissions allowances agreed to by their jolly green mayor.