The steep path to 1.5 degrees

Another good post from Jeremy Williams on the challenge we face in remaining within 1.5 degrees of global warming…

Make Wealth History

At the Paris climate talks last December, the international community recommitted itself to keeping below two degrees of global warming, with a stretch goal of 1.5 degrees. We’ve already had one degree of warming, so 1.5 is a much tougher target. As I’ve mentioned before, the difference between the two is much bigger than the fractional increase in heat. Climate change does not progress in a nicely orderly and linear fashion. Incidences of extreme weather are likely to double between 1 and 1.5 degrees, and double again between 1.5 and 2.

For some parts of the world, that’s the difference between climate change that they can adapt to, and conditions that are unliveable. Cue the evacuation of low-lying islands, and a new crisis of climate migration. The impact on crop yields would be much more serious, and perhaps most striking – at 2 degrees we are likely to completely lose…

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