How to Talk to a Climate Skeptic: Responses to Common Arguments
According to author Coby Black, this is "a comprehesive set of rebuttals to common 'climate skeptic' talking points vetted and endorsed by the professionals at Real Climate."
Think of this site as a useful complement to Skeptical Science (SkS). If you can't find what you are looking for in SkS, or want additional ideas, look here.
Real Climate is a very reliable blog by active climate scientists, so if they give it the "thumbs up" you can rely on what your read here.
Coby Black, vis Grist