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Once You Know

6.720211h 45mMovieDocumentary

Today, like a ship entering the storm, the world faces climate change induced collapse. Once You Know, by director Emmanuel Cappellin, is a poetic and poignant exploration of how four of the world’s leading climate scientists and energy experts find truth, chaos, and hope in their work.

DirectorEmmanuel Cappellin

Where to watch

Amazon Prime VideoAmazon Prime VideoAmazon Prime Video with AdsAmazon Prime Video with AdsKanopyKanopy
Availability shown for United States · rights vary by country

Cast · Directed by Emmanuel Cappellin

JJJean-Marc Jancovici
Jean-Marc Jancovici
PSPablo Servigne
Pablo Servigne
RHRichard Heinberg
Richard Heinberg
SHSaleemul Huq
Saleemul Huq
SMSusanne Moser
Susanne Moser

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Once You Know — streaming FAQ

Which OTT platform streams Once You Know?

Once You Know is streaming on Amazon Prime Video and Kanopy in United States, and available to rent or buy on Amazon Video and Apple TV Store. It's not currently on Netflix.

Is Once You Know on Netflix?

No, Once You Know is not on Netflix in United States as of November 2026. It's currently on Amazon Prime Video and Kanopy.

Is Once You Know on Amazon Prime Video?

Yes — Once You Know is included with an Amazon Prime Video subscription in United States as of November 2026.

Where can I watch Once You Know for free?

Once You Know is available to stream free (with ads) on Kanopy in United States.