休·夸希

Hugh Quarshie

饰：Narrator

Paul R. Epstein

饰：Self - Harvard University

阿诺德·施瓦辛格

Arnold Schwarzenegger

饰：Self - Governor of California

Antonio Villaraigosa

饰：Self - Mayor of Los Angeles

Rajendra Pachauri

Rajendra Pachauri

饰：Self - UN Panel on Climate Change

Guillermo León

饰：Self - Director of Sedapal

Glen MacDonald

Glen MacDonald

饰：Self - University of California, Los Angeles