“Quietly in public, loudly in private, climate scientists everywhere are saying the same thing: it’s over. The years in which more than 2 C of global warming could have been prevented have passed, the opportunities squandered by denial and delay. On current trajectories we’ll be lucky to get away with 4C. Mitigation (limiting greenhouse gas pollution) has failed; now we must adapt to what nature sends our way. If we can.
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And it doesn’t stop there. The IPCC also finds that, above 3C of warming, the world’s vegetation will become “a net source of carbon”. This is just one of the climate feedbacks triggered by a high level of warming. Four degrees might take us inexorably to 5C or 6C: the end – for humans – of just about everything. ”
George Monbiot, guardian.co.uk
