And he knows this how?

Via CNN:

On Saturday Obama reserved his harshest criticism for politicians who he said avoid questions about climate by claiming a lack of knowledge — and a press he says ignores the issue.

Climate change deniers, he said, at least “have the brass to say what they actually think.”

Others, he said, duck questions about climate change by saying, “Hey, I’m not a scientist.”

“Let me translate: what that means is, ‘I accept that manmade climate change is real, but if I admit it, I’ll be run out of town by a radical fringe that thinks climate science is a liberal plot,’” he said.