From 2011, Skeptical Science's excellent Debunking Handbook, a short guide for having discussions about climate change denial that tries to signpost the common errors that advocates of the reality of anthropogenic global warming make when talking to people who disbelieve.
The Handbook explores the surprising fact that debunking myths can sometimes reinforce the myth in peoples' minds. Communicators need to be aware of the various backfire effects and how to avoid them, such as:
* The Familiarity Backfire Effect
* The Overkill Backfire Effect
* The Worldview Backfire Effect
(via Dan Hon)