Willful ignorance is a choice, being straight or gay is not. Climate change is real and man has contributed to it. Whether you believe that now or not is immaterial. You have to wait to be convinced. To think man has not contributed to the change of our climate means you have bought the propaganda and your pride prevents you from even trying to listen to the realities of people who study it. Now, the melting of the ice, many will say, is a natural occurrence, and it is. However, man has proven to be the most destructive force on the planet next to water. Our planes, our cars, our chemicals, the burning of tires like they recently did in Texas, all point to mans contribution to climate change as a whole.