PARIS: The world needs “trillions” of dollars to spur on the green transition and tackle global warming, the head of last year’s COP28 climate talks said on Tuesday, warning that political momentum can evaporate without clear action. COP28 president Sultan Al Jaber hailed progress made at UN negotiations last year in Dubai, where countries agreed to triple global renewables capacity this decade and “transition away” from polluting fossil fuels. But the deal lacked important