Read IPCC reports

I suppose not many of us know how to read the AR5 reports. We would probably be overwhelmed by the thickness of them. Thus, this article is useful. In there, what I like the most is this:

Likelihood terminology used in AR5. IPCC/Gallant & Lewis

P/S: in case you just want to get the key ideas of the reports, go for these IPCC Infographics by the Finish Meteorological Institute.