Hyppo Audouy
Himself - Narrator (voice)
Stéphane Chassagne
Himself - Urologist
Martin Knight
Himself - Bioengineer
Steven Soifer
Himself - Psychologist
Sally Magnusson
Herself - Writer
Martin Lara
Himself - Urotherapist
Wu Yunhua
Himself - Therapist
Ximin Du
Duaqing Pei
Himself - Researcher
Shaker Mousa
Scott Chen
Himself - Ecological Farmer
Jes Thomsen
Himself - Greentech Director
Gerardine Botte
Herself - Researcher
Mike Jetten
Himself - Microbiologist
