[8][9][10][11] He also retained close links with Fleming, and they together advised the UK government's feasibility study into his influential TEQs system for fuel/electricity rationing in the face of climate change.

[30][31][32][33] This uniquely structured hardback was published alongside the paperback Surviving the Future: Culture, Carnival and Capital in the Aftermath of the Market Economy, conceived and created by Chamberlin after Fleming's death, and consisting of content from Lean Logic which he selected and edited into a conventional read-it-front-to-back narrative.

[46][47] Accordingly, his writing and participation with activist projects like the Ecological Land Co-operative, Occupy and Extinction Rebellion emphasise the possibilities for living in fulfilling ways that do not support our collective drive towards life on a devastated planet.

He personally does not fly,[48][49] and he and Mark Boyle complement their writing by living as part of the community at 'The Happy Pig' in County Galway, Ireland, which Chamberlin has described as "a bastion for the renaissance of the non-monetary economy".

He is noted for coining the widely-adopted term 'Dark Optimism', which The Guardian's Anne Karpf has characterised as "facing dark truths while believing unwaveringly in human potential", and which inspired EXPO 1: Dark Optimism at the New York Museum of Modern Art in 2013, featuring artists including Ansel Adams, Joseph Beuys, Agnes Denes, Olafur Eliasson and Adrián Villar Rojas.