Remember Paris? The adoption of that landmark agreement in 2015 was a moment of possibility, when multilateral diplomacy translated scientific urgency, political compromise, and moral pressure into a shared global framework for action to keep global temperature rise well below 2 degrees Celsius. At their best, the U.N. climate conferences, or COP, have been more than bargaining arenas. They have provided spaces where vulnerable countries, scientific bodies, civil society, and future-oriented