Matthew Watson
Self - Volcanologist
David Keith
Self - Physicist
Clive Hamilton
Self - Ethics researcher
Nathan Myhrvold
Self - Researcher
Lee Lane
Self - Political Scientist
Stewart M. Patrick
Self - Political Scientist
Régis Briday
Self - Philosopher
Kristine C. Harper
Self - Science Historian
Ken Caldeira
Self - Climate Researcher
Oliver Morton
Self - Science Reporter
Edward Teller
Self - Nuclear Physicist
Michael MacCraken
Self - Climate Researcher
Paul J. Crutzen
Self - Atmosphere Chemist
Lowell Wood
Self - Astro Physicist
Marianne Denicourt
Narrator
