The final outcome of the COP30 climate summit in Brazil last month was "disappointing," but shows multilateralism still works even without the U.S., U.N. chief says. https://www.japantimes.co.jp/environment/2025/12/04/energy/us-fossil-fuel-climate-un/?utm_medium=Social&utm_source=mastodon #environment #energy #us #fossilfuels #un #climatechange #antonioguterres