I was not surprised, it is clear to the country what side of the argument the GOP supports. Even with substantial evidence and other world powers accepting it, it is unknown what will sway the minds of these individuals. The only talk of anything environmental was Jeb Bush discussing the Keystone Pipeline where he said "give me a break, of course we support that," even though it could be a potential catastrophe for the environment. while hurting the economy is never a good thing, ignoring the environment because it could have a negative impact on the economy is counterproductive. Democrats have been on the offensive against republicans who have denied climate change, asking GOP members what their climate plan actually is.
Though some republicans do acknowledge the fact that climate change is manmade (at least partially), it is not in their political interests to go against their political party platform. Imagine a world where one of the strongest countries denies that there is a problem with climate change. This is a very important issue for not just the United States, but for the world as a whole, and the fact that a great portion of our government denies it is very disconcerting.