One of the clearest climate graphics I’ve seen. It describes in simplest terms how much carbon we can afford to dump into the air before doom. Answer: about 13 years-ish at current rate and then systems begin collapsing. The columns show which cities, crops, and species will be impacted and when. Unfortunately, these estimates are fairly low.
Update: Sorry, I was so excited Tumblr was back up I forgot to post the source! The Guardian, covering the COP18. Data is here. Hi-res PDF.