A 6°C warmer world might be short-lived – it could quickly spiral into 8°C, 10°C or more. It would be a massive humanitarian disaster. Only a few years ago I thought this was where we were headed. Forget 1.5°C or 2°C – we were destined for 4, 5 or 6°C and there was nothing we could do about it. Most people still think that this is the path we’re following. Thankfully, it’s not.
