Explore the idea of living in a closed biosphere with insights from Jane Poynter. Watch here.

Imagine condensing everything that sustains life on Earth into a small bubble. The Earth's biosphere spans approximately 20 km (12 mi), from ocean depths to the atmosphere, housing most life forms. To inhabit space or Mars, replicating this complex system is essential. What would you eat? How would you manage waste? What health risks would you face?

For more information, check the transcript and sources.

Join for perks: Join here.

Subscribe to our second channel "How to Survive": Subscribe.

More scenarios:

Merchandise: Shop here.

Suggest an episode: Suggest here.

Newsletter: Subscribe.

Feedback: Contact us.

Connect with What If:

Thank you to our supporters: Batman, Kristopher Kirby.

What If is a web series exploring hypothetical worlds and possibilities. Join our fun adventures through time, space, and chance, produced by Underknown in Toronto: Visit Underknown.

Learn more about your ad choices. Visit podcastchoices.com/adchoices