John Kerry is the Forrest Gump of climate. The guy you’ll find at every important turn in history doing something impactful. For the last three years, he has been the US special presidential envoy for climate and tasked with restoring the US’s global credibility on climate action. In a conversation with Akshat Rathi, Kerry reflects on those efforts, his frustrations and what still keeps him going at 80.

Read Bloomberg Green's feature looking at Kerry's work in the envoy role.

Zero is a production of Bloomberg Green. Our producers are Tiffany Tsoi, Sommer Saadi and Magnus Henriksson. Special thanks this week to Kira Bindrim and Jen Dlouhy. Thoughts or suggestions? Email us at zeropod@bloomberg.net. For more coverage of climate change and solutions, visit https://www.bloomberg.com/green.