- July 10, 2014
Mark Nelson Environmental engineer, author of the new book, The Wastewater
Gardener: Preserving the Planet One Flush at a Time, published by Synergetic Press
- Future Primitive, August 2014, Mark Nelson talking about his book The Wastewater Gardener and Biosphere 2.
- EcoHustler Podcast 003 – Mark Nelson – Biosphere 2; Pushing our limits – two years in a sealed, miniature Earth. http://www.ecohustler.co.uk/2018/10/14/ecohustler-podcast-003-mark-nelson-biosphere-2/
- Future Fossils podcast, Michael Garfield, https://www.mindpodnetwork.com/future-fossils-94/ October 2018