Once You Know (2021): cast, story & where to watch
2021 · Film · ★ 6.2
Released in 2021, Once You Know is a documentary film directed by Emmanuel Cappellin, running about 105 minutes.
What it’s about. 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.
Who’s in it. Once You Know stars Jean-Marc Jancovici, Pablo Servigne, Richard Heinberg and Saleemul Huq, among others.
How it landed. With an audience score of 6.2/10, Once You Know has drawn a solid, mixed-to-positive response.
Where to watch. In US you can stream it on Amazon Prime Video and Amazon Prime Video with Ads and rent or buy it from Amazon Video, Apple TV Store, Google Play Movies and YouTube. See the full, country-by-country breakdown on our where to watch Once You Know page.
If you liked it. Fans of Once You Know tend to enjoy One Direction: This Is Us, Burn the Stage: The Movie, BTS World Tour: Love Yourself - Japan Edition and Senna.
Frequently asked
- Where can I watch Once You Know (2021)?
- In US, Once You Know is available to stream on Amazon Prime Video and Amazon Prime Video with Ads, and rent or buy from Amazon Video, Apple TV Store and Google Play Movies. Availability varies by country — check our where-to-watch page for every region.
- Is Once You Know worth watching?
- Once You Know holds an audience score of 6.2 out of 10, and is a strong pick if you enjoy documentary. Reactions are mixed, so it may depend on taste.
- Who stars in Once You Know?
- Once You Know stars Jean-Marc Jancovici, Pablo Servigne, Richard Heinberg, Saleemul Huq and Susanne Moser.
- When was Once You Know released?
- Once You Know was released in 2021, with a runtime of about 105 minutes.