"The weight of the evidence is that most of it, maybe all of it, is because of natural causes"

“The weight of the evidence is that most of it, maybe all of it, is because of natural causes,” Pawlenty said in an interview published Wednesday. “But to the extent there is some element of human behavior causing some of it — that’s what the scientific debate is about. That’s why we’ve seen all this back and forth between some of those prominent scientists in the world arguing about that very point.”

Pressed to explain how his view squares with scientific research concluding human activities are very likely to blame for the warming planet, Pawlenty replied, “There’s lots of layers to it. But at least as to any potential man-made contribution to it, it’s fair to say the science is in dispute.

“There’s a lot of people who say the majority of the scientists think this way,” he added. “And there’s a minority that way. And you count the number of scientists versus the quality of scientists and the like. But I think it’s fair to say that, as to whether and how much — if any — is attributable to human behavior, there’s dispute and controversy over it.”