Characters played by Sylvia Earle
Self - deep sea researcher
Characters played by Alexander Gerst
Self - astronaut
Characters played by Janina Loh
Self - critical post-humanist
Characters played by Matthieu Ricard
self - Buddhist monk
Characters played by Felwine Sarr
Self - philosopher
Characters played by Dennis J. Snower
Self - economist
Characters played by Manfred Zapatka
Narrator