Look, first of all, the climate is changing. I don't think the science is clear what percentage is man-made and what percentage is natural. It's convoluted. And for the people to say the science is decided on, this is just… — Barack Obama Copy Share Image
I don't think the science is clear of what percentage is man-made and what percentage is natural. It's convoluted, for the people to say the science is decided on this is really arrogant, to be honest with you. — Jeb Bush Copy Share Image
