This is really quite good, and non-confrontational enough that you can yank it up on your phone at those family gatherings where your crazy uncle starts spouting off about climate change denial.

Mother Jones:

For more reading, the two groups have co-authored an excellent (and colorful)climate change primer that lays out the answers to 20 common questions—great to have up your sleeve for that awkward Christmas lunch with your climate-denying cousin. And there's also a more lengthy report—still highly readable—to get you deeper into the nitty gritty of of the science.

I've got this one bookmarked.