Around the world, particularly in the U.S. and Europe, countries are in the middle of a climate reset. Right-wing politicians want to nix climate policy full stop. Their left and center-left counterparts are backtracking on promises for aggressive new policies under the assumption that climate is no longer popular—or perhaps that it never was. Sadiq Khan , the London mayor who completed a decade in office last month, says his tenure offers a different lesson. His climate policy push has generated moments of significant blow back from right-leaning politicians and outspoken members of the public, leading political observers to cast green policies as all-but-inevitable instigators of climate backlash. And yet Khan survived and his policies did too. “There is a silent majority who aren’t keyboard warriors,” he told me in April. Every country, province, and city has a different texture, but it’s a reminder that ditching climate entirely may not be necessary or wise in this moment of reassessment.…