Calificación
Reparto

Bjørn Lomborg
Self - Director, Copenhagen Consensus Center

Hashem Akbari
Self - Head of Heat Island Group, Berkeley Lab

Al Gore
Self (archive footage)

James Hansen
Self - Director, NASA Institute for Space Studies

Barack Obama
Self (archive footage)

Barry Glassner
Self - Sociologist, USC and Author, 'The Culture of Fear'

Richard Lindzen
Self - Professor of Atmospheric Science, MIT

Nathan Myhrvold
Self - Founder, Intellectual Ventures

Daniel Nocera
Self - Professor of Energy and Chemistry, MIT

Thomas Schelling
Self- Economist, Nobel Laureate

Jonathan Trent
Self - OMEGA Project Scientist, NASA Ames Research Center

Joe Barton
Self (archive footage)

John Dingell
Self (archive footage)