Before the applause had even settled in the suburban convention center where the Paris Agreement was adopted by consensus on Saturday night, world leaders warned that momentum from the historic accord must not be allowed to dissipate. “Today, we celebrate,” said Miguel Arias Cañete, the European Union’s energy commissioner and top climate negotiator. “Tomorrow, we have to act.” With nearly every nation on Earth having now pledged to gradually reduce emissions of the heat-trapping gases that are warming the planet — a universal commitment that had eluded negotiators and activists since the Earth Summit meeting in Rio de Janeiro in 1992 — much of the […]