Climate science is "systems science". It is very much a hard science; however, there'll always be uncertainties for political ideologues to talk up. We've got about a 10% of creating a disaster, and no second planet earth yo move to, and that alone means we should be talking about appropriate actions, and not *if* there's a problem. It's very easy for the oil industry to sow fear, uncertainty and doubt
over the science, which is just a tried and true political game. The scientists themselves will not (by and large) explain what to do -- that's not their expertise -- but they are convinced that there is a problem, and their reasons are clearly explained. Skepticalscience.com
has a summary of "skeptic arguments" and what scientists say. You can always read the peer reviewed literature yourself. But somehow I think you'll just retreat back to your blog and news sites, which give you the information you want to believe.