Climate change science is fiendishly complicated, and many of us are not very scientifically literate. The official GOP and Trump response is almost criminally negligent. Living in Alaska we see change happening much faster than the lower 48, and anyone here who denies it must never leave their couch. I am thankful I do not have children, because we are living in interesting times (an old Chinese curse). The pace of change here is absolutely stunning. Alaska might be a overall winner in these changes as long as you are not into winter sports, but there will nationally be huge losers and disruptions too.