Last month’s long-overdue declaration from the Environmental Protection Agency, that carbon dioxide from the burning of fossil fuels is a pollutant that endangers human health, and CO2 emissions should be regulated under the Clean Air Act, was a step in the right direction. Unfortunately last week, Senator Lisa Murkowski (R-Alaska) proposed an amendment, which will do absolutely nothing to regulate CO2 emissions and is a step backwards, considering all that we’ve learned in the last decade about the dangers of greenhouse gas emissions.