The world’s biggest carbon problems

It’s COP season again, which means a torrent of climate related reports, books, studies and campaigns. If previous years are anything to go by, I’ll get to some of them by February. Here’s something that I thought might be helpful earlier than that. As negotiators meet to thrash out the next round of climate agreements, here’s a summary of the biggest sources of emissions.

First, the top seven emitters, as graphed by the UNEP’s Emissions Gap report.

As always, it’s impossible to avoid...