The hope that followed the signing of the Paris climate agreement in 2016 has long gone as the global community has failed utterly to rein in emissions, which barring a small pandemic-induced blip in 2020 have headed remorselessly upwards ever since. And there is little sign of this changing anytime soon. Indeed, as global heating has accelerated over the past few years, instead of trying harder, the world is turning its back on measures to tackle the climate crisis.