ANNUAL UN CLIMATE summits are never moments of unbridled optimism, but this year's, held in Madrid and dubbed COP25, was particularly dispiriting. Its logo was a clock with its hands at a quarter to 12. Midnight duly passed on Friday December 13th-supposedly the summit's last day, and then again on Saturday. Only on Sunday did delegates agree to weak and watered-down commitments to enact previously promised cuts in emissions of greenhouse gases. And they deferred until next year a decision on regulating a new international carbon market.
展开▼
