Explicitly pandering know-nothing-ism:

Jeb Bush rails against ‘intellectual arrogance’ in climate change debate

Jeb Bush hit back against President Obama’s claim that climate change runs an immediate risk, saying Wednesday that while it shouldn’t be ignored, it’s still not “the highest priority.”

As he has before, Bush acknowledged “the climate is changing” but stressed that it’s unknown why. “I don’t think the science is clear of what percentage is man-made and what percentage is natural. It’s convoluted,” he said at a house party in Bedford, New Hampshire.

“For the people to say the science is decided on this is really arrogant, to be honest with you,” he continued. “It’s this intellectual arrogance that now you can’t have a conversation about it, even. The climate is changing. We need to adapt to that reality.”

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This is the play-book that is being passed around for the “serious” Republican (Bush, Christie, Kasich) candidates.