In this bonus episode, Chris talks with climate policy expert Tom Rivett-Carnac, who worked with Christiana Figueres—guest from our last episode!—to negotiate the landmark Paris Agreement. They discuss why we need optimism to solve the climate crisis, and why TED’s new COUNTDOWN initiative can serve as a key catalyst of this optimism for countries, cities and citizens everywhere. This conversation was originally shared on the podcast Outrage and Optimism—check it out wherever you get your podcasts.

For more go to: countdown.ted.com