We've recommended that WorldChanging readers check out the Real Climate website numerous times. Run by real, working climatologists, it takes a science-based approach to discussions of climate issues (global warming in particular). Today's post on climate forcings is particularly useful, as it helps to peel back some of the apparent fuzziness about how scientists determine the relative importance of different interacting forces when looking at a changing environment. This post is also a good example of how scientific disagreements should be handled -- with respect for another scientist's view, a reasonable explanation of why that view might be held, and details of why the author sees things differently.