use the EPA to roll out new rules limiting coal-fired power plants to rein in their pollution of CO2 emissions.

According to a 2007 report (Climate Change 2007: Synthesis Report), by the Intergovernmental Panel on Climate Change, an international, scientific body for the assessment of climate change established by the United Nations Environmental Programme,global GHG emissions due to human activities have grown since pre-industrial times, with an increase of 70% between 1970 and 2004.
Carbon dioxide (CO2) is the most important anthropogenic GHG. Its annual emissions grew by about 80% between 1970 and 2004.
It is imperative that the United States confront the challenge of global warming by exercising penalties on companies that pollute our environment.