The first transatlantic flight using 100% sustainable jet fuel took off last week, but it drew criticism from campaigners and climate experts. How “green” was its journey?

To find out more about Tortoise:

- Download the Tortoise app - for a listening experience curated by our journalists

- Subscribe to Tortoise+ on Apple Podcasts for early access and exclusive content

- Become a member and get access to all of Tortoise's premium audio offerings and more

If you want to get in touch with us directly about a story, or tell us more about the stories you want to hear about contact hello@tortoisemedia.com

Hosted on Acast. See acast.com/privacy for more information.