Dawn: Twenty-three years after the Earth Summit of 1992, it took just a few minutes for the Paris climate agreement to be adopted on December 12th at COP21. I watched it happen live on a video screen put up in the hallways of the Le Bourget conference center, as with my media badge, I could not get into the plenary that final day.
Ministers hugged each other and there were plenty of wide smiles and applause. The media stationed outside the plenary went into a frenzy, with bleary-eyed TV journalists...