Turning up the heat: how the diplomatic push for 1.5℃ unfolded in Paris

The inclusion of a 1.5℃ temperature limit in the new Paris climate agreement was a major victory for the poorest countries and island nations who came to Paris saying they wanted the world to act. Bill Hare tells the story of how we got 1.5˚C into the Paris agreement, and how “best available science” can take us there.