photo via comedy central Stephen Colbert brought on Joe Bastardi, chief Accuweather forecaster and climate change skeptic, and Brenda Ekwurzel, a climatologist at the Union of Concerned Scientists, to debate the science of global warming. Colbert expressed his usual truthiness (and cluelessness): "On February 6 it was 10 degrees. Today it hit almost 80. At this rate, by August it will be 220 degrees."...