Check out Meet the Press tomorrow 12/16/2014 Nye vs. GOP's Blackburn AGW

This was a topic for debate 25 years ago maybe, the only people who still claim the science is uncertain don’t really understand the science or are unable to care about the consequences. The global warming signal clearly rose above the noise in the mid 1990s, with changes in the atmospheric temperature profile, timing of the seasons, increase in extreme weather, loses in the cryosphere, ocean warming and expansion, etc, etc, etc…
What debates like this are is a clear signal of how resistant the political and economic process is to changes that will result in a profound reordering of society to make the necessary changes, basically the big winners in today’s world have no guarantee of still being on top after we make those changes and they don’t like that. So they invest millions of dollars to create “doubt” in the same way tobacco companies did for decades. This will all be resolved at some point, the science is just too sound about the serious danger we’re all putting ourselves in on relying on fossil fuels, but how far along the process will we be when effective measures at mitigation are taken.
Which makes it about how many people are going to lose their homes, livelihoods, and lives and how many species are going to go extinct when the worst aspects of climate change kick in.