Watch the full livestream of the Countdown Global Launch, a call to action on climate change

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The Global Launch kicks off Countdown, an initiative to champion and accelerate solutions to the climate crisis. Presented by TED and Future Stewards, this special event featured more than 50 speakers, activists, actors and musicians in five curated sessions of actionable and science-backed ideas, paired with moments of wonder, inspiration and optimism.

Watch the full 5-session livestream on YouTube, featuring hosts Jane Fonda, Priyanka Chopra Jonas, Chris Hemsworth, Mark Ruffalo, Don Cheadle, Al Gore, Xiye Bastida, Prajakta Koli, Hannah Stocking and Jaden Smith; and speakers Prince William, His Holiness Pope Francis, Monica Araya, Jesper Brodin, David Lammy, Christiana Figueres, Kara Hurst, Lisa Jackson, Rose M. Mutiso, Johan Rockström, António Guterres, Ursula von der Leyen and many more; with special musical performances by Prince Royce, Yemi Alade, Raye Zaragoza, Sigrid and Cynthia Erivo.

For more information and to #JoinTheCountdown, visit