At the Cop31 summit in Turkey, Marshall Islands president Hilda Heine warns that without an overwhelming response to the climate crisis "the world we know is over," telling leaders that overshooting 1.5C would bring waves eating away shores and floods destroying towns, schools and hospitals. Dozens of world leaders gathered, though Donald Trump and Xi Jinping were absent, and amid warnings from Mia Mottley and António Guterres — in one of his last speeches as UN secretary general — there is little sign of progress on phasing out fossil fuels.