From hot air to action

IMAGINE, SAYS Adair Turner, chairman of the Energy Transitions Commission, that a beneficent god had sent envoys in the night to steal two-thirds of the world’s store of fossil fuels, so that mankind knew it would run out of them within 40 years. “I’m certain that by 2060 we’d have built a zero-carbon economy and the cost of doing so would be trivial,” he says.