I am glad to learn progress is being made on the cost and time line of nuclear power plants. Nuclear power is one of the real answers to AGW. People just are not going to support expensive power. They just aren't going to support changing lifestyle. That is that.
There is no "smoking gun." Evidence for AGW being caused by green house gases is statistical in nature. The statistical evidence and evidence from modeling is very good. It isn't all that understandable to the non-scientist. Since it leads to the conclusion we need expensive energy and lifestyle change it isn't very popular
Furthermore the opposition party has a difficult time with factual reality. A significant portion of its membership still believes President Obama was not born in the United States. Convincing people who can not deal with plain and easily proven fact of the truth of complex scientific theories is impossible. This is why there will be no climate change treaty ratified by this Senate. We will be lucky to pass a very watered down climate change bill.