Name	Known for
Iain Stewart Self - Presenter (as Dr Iain Stewart) Self - Presenter (as Dr Iain Stewart) See fewer	Huntingtower (1978)
Paul Ehrlich Self (archive footage) (as Dr Paul Ehrlich) Self (archive footage) (as Dr Paul Ehrlich) See fewer	Population Explosion: The Human Bomb (1968)
James Hansen Self - NASA (as Prof James Hansen) Self - NASA (as Prof James Hansen) See fewer	Merchants of Doubt (2014)
Ralph Keeling Self - University of California, San Diego (as Prof Ralph Keeling) Self - University of California, San Diego (as Prof Ralph Keeling) See fewer	Nova (1974)
Stephen Schneider Self - Stanford University (as Prof Stephen Schneider) Self - Stanford University (as Prof Stephen Schneider) See fewer	The Fire Next Time (1993)
Magnus Magnusson Self (archive footage) (uncredited) Self (archive footage) (uncredited) See fewer	Rock in Reykjavik (1982)
Ronald Reagan Self (archive footage) (uncredited) Self (archive footage) (uncredited) See fewer	Kings Row (1942)
Howard Stableford Self (archive footage) (uncredited) Self (archive footage) (uncredited) See fewer	Aladdin and the Forty Thieves (1984)
Margaret Thatcher Self (archive footage) (uncredited) Self (archive footage) (uncredited) See fewer	SDI Star Wars (1991)