Insurance. Yes, it’s geeky, it’s niche. But it’s the secret lever we never knew we needed. The insurance world holds the keys to halt new fossil fuel projects in their tracks. That’s because if you can’t insure the work, it can’t go ahead. TEDxLondon’s Climate Curious speaks to two campaigners from Insure our Future, Isabelle L'Héritier and Hilda Flavia Nakabuye on the wins from their recent week of global action across 31 countries and five continents.