What exactly has science revealed about our impact on the health of our planet? Why does it matter? And, what would be a sensible and proportionate response? Climate disruption is a 'wicked' problem, a problem entangled within many others-not least, deep diplomatic tensions and conflicting national interests. It can't be cleanly isolated and addressed; it can't ever be entirely 'solved'. It can only be managed. But, dealing with climate disruption is complicated by additional challenges: the evidence that there is a threat to our planet is complex and technical, and by the time that the.