Name	Known for
Peter H. Gleick Self - Pacific Institute, Oakland Self - Pacific Institute, Oakland See fewer	Grand Canyon Adventure: River at Risk (2008)
Klaus Töpfer Self - UN-Umweltprogramm (as Prof. Klaus Töpfer) Self - UN-Umweltprogramm (as Prof. Klaus Töpfer) See fewer	Pro & Contra (1968)
Nelson Mandela Self (archive footage) Self (archive footage) See fewer	Mandela: Long Walk to Freedom (2013)
Junior Potloane Self - Water Institute of Southern Africa (WISA) Self - Water Institute of Southern Africa (WISA) See fewer	Der durstige Planet (2004)
Rajendra Singh Self (as Dr. Rajendra Singh) Self (as Dr. Rajendra Singh) See fewer	Água e Cooperação, Reflexões para um Novo Tempo (2014)
Markus Hoffmann Narrator (voice) Narrator (voice) See fewer	Der durstige Planet (2004)
Nadja Berlinghoff Narrator (voice) (as Nadja Schulz-Berlinghoff) Narrator (voice) (as Nadja Schulz-Berlinghoff) See fewer	Sugar Orange (2004)
Kofi Annan Self (archive footage) (uncredited) Self (archive footage) (uncredited) See fewer	The Blair Years (2007)
Tony Blair Self (archive footage) (uncredited) Self (archive footage) (uncredited) See fewer	The Force of Nature (2022)
George W. Bush Self (archive footage) (uncredited) Self (archive footage) (uncredited) See fewer	Journeys with George (2002)
Jacques Chirac Self (archive footage) (uncredited) Self (archive footage) (uncredited) See fewer	Breaking Point: Canada/Quebec - The 1995 Referendum (2005)
Colin Powell Self (archive footage) (uncredited) Self (archive footage) (uncredited) See fewer	Madam Secretary (2014)
Vandana Shiva Self (archive footage) (uncredited) Self (archive footage) (uncredited) See fewer	The Corporation (2003)