At the blog "Global Change: Intersection of Nature and Culture," Phil Camil has an excellent overview and synthesis of research on some of the communication barriers to action on climate change and the strategies for overcoming those barriers. Camil is associate professor and director of the Environmental Studies program at Bowdoin College in Maine.
At the post there are also links to other analyses by Camill on the problem of environmental literacy and engagement generally.
I cover climate change, evolution, and nuclear energy/waste management on my blog, "Thinking Critically About Science". My targeted audience is literate people who are not expert scientists.
Here's an update on the notion of fear as a method of climate communication: