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. Above this level, temperature increases are predicted to cause colossal disruption: 10 million more people displaced as a consequence of higher sea levels; greatly increased risk of fires, drought and extreme weather of all kinds; shrinkage of plant and insect habitats with massive effects on agriculture as well as nature; the extinction of coral.