Tom Rivett-Carnac is a political strategist, author and podcaster. He has spent more than 20 years working to address the climate and ecological crises.

Tom co-founded Global Optimism with Christiana Figueres after they left the UN in 2016. The organisation inspires individuals and builds transformative partnerships that tackle the climate crisis with the conviction, scale and speed that science demands.

Tom’s responsibilities at Global Optimism include strategic roles across the philanthropic, non-profit and private sectors. Tom leads Global Optimism’s work as co-founder of The Climate Pledge, a partnership with Amazon that brings together more than 200 influential companies with the shared objective of reaching net zero by 2040. He is Strategy Adviser to the Earthshot Prize, a Fellow at the Bezos Earth Fund, a Senior Advisor to Macquarie Group, and a Fellow at Stanford Law School. Global Optimism is a founding partner, of TED Countdown, alongside TED and Leaders’ Quest.