We must transform our lives and values to save this burning planet
In decades to come we must rethink our agriculture, our love of consumption and our short-termist priorities. It won't be easy.
The case for action to tackle the climate emergency, on a scale far beyond anything that has yet been attempted, is increasingly widely understood.
Almost three decades after the first UN climate treaty was agreed in Rio de Janeiro in 1992, and despite the commitments thrashed out among nation states at every summit since, global carbon emissions last year rose to a record 37.1bn tonnes.
In October, UN scientists warned that within 12 years a target of 1.5C of global heating would be out of reach.
It is extremely difficult to see a safe way through the next few decades that does not involve a drastic reorientation of global priorities, towards wildlife and away from consumption.
The climate crisis differs from a war because it does not have an end - or not in the same way. And while there is an enemy, in the hugely powerful fossil fuel industry and the politicians who are its backers, this is a much harder foe to identify than a foreign power.