Cold Truth

(Fox News) - As former Vice President and global warming activist Al Gore delivered his testimony to Congress on the urgency of addressing climate change Wednesday, snow and ice blanketed the nation's capital and a large section of the country. Global warming skeptic and Weather Channel founder John Coleman -- in a piece he wrote for his station KUSI News in San Diego, which appeared on the channel’s Web site -- says, "The last two bitter winters have led to a rise in public awareness that CO2 is not a pollutant and is not a significant greenhouse gas that is triggering runaway global warming."

He says theories linking carbon dioxide levels to global warming are unproven and that "the percentage of the atmosphere that is CO2 remains tiny."

Coleman calls global warming bad science — a hoax — and "the greatest scam in history."