The Talanoa dialogue, an important outcome from this COP, switches on the ambition ratchet mechanism of the Paris Agreement and sets into motion the climate pact that governments promised to abide by two years ago to keep warming below 1.5 °C. (climatenetwork.org)
But previous efforts used a sort of ratcheting mechanism instead of the foam ring. (newscientist.com)
Legally - binding, a robust ratchet mechanism, and strong reporting requirements — impressive. (sciencemediacentre.org)