Rick Santorum: Man-made climate change is liberal 'junk science,' in sharp contrast to Mitt Romney

Man-made climate change? Liberal hogwash, says Rick Santorum.

The Republican presidential candidate and former Pennsylvania senator expressed his skepticism to Rush Limbaugh on Wednesday, calling the widely held consensus in the scientific community that humans are responsible for global warming "junk science."

"I believe the Earth gets warmer, and I also believe the Earth gets cooler," Santorum said. "And I think history points out that it does that. The idea that man, through the production of \[carbon dioxide\] - which is a trace gas in the atmosphere, and the man-made part of that trace gas is itself a trace gas - is somehow responsible for climate change is, I think, just patently absurd ."