Look up Carbon Credits and you'll understand the politics of Global Warming. Support Al Gore buy a Prius, his pockets will love you! Global warming is a farce, its a political venture to line the pockets of politicians. He has created a company that sells Carbon Credits to companies that produce Carbon Dioxide and the more you pollute the more Credits (money) you put into his pocket.They are not restricting the amt of CO2 going into the air, the big oil companies can buy excess Carbon Credits from the little guys (companies) to continue producing mega amts of CO2. Its a money game . The earth goes thru cycles of cooling and warming and our contribution is minut. Do you know a single cow puts out more CO2 over its lifetime than one of our SUV's. Google it!! We have a finite amt of Petro out there, but there are other sources of energy, when the time comes and the petro companies allow other sources of energy to move america I'll switch. Until then I'm not buying into the american Farce!