Launching Countdown means asking big questions: What's the state of the climate today? What does climate science know? How are we going to achieve a net-zero future? How do we center climate justice in our work? This opening session of the Countdown Global Launch, hosted by Mark Ruffalo and Don Cheadle, features Johan Rockström, Angel Hsu, António Guterres, David Lammy, Christiana Figueres and Prince Royce.
