Name	Known for
Iain Stewart Self - Presenter (as Dr. Iain Stewart) Self - Presenter (as Dr. Iain Stewart) See fewer	Huntingtower (1978)
Nigel Calder Self - Author (archive footage) Self - Author (archive footage) See fewer	The Weather Machine (1974)
James Hansen Self - NASA (archive footage) (as Prof James Hansen) Self - NASA (archive footage) (as Prof James Hansen) See fewer	Merchants of Doubt (2014)
Michael E. Mann Self - Penn State University (as Dr. Michael Mann) Self - Penn State University (as Dr. Michael Mann) See fewer	Volatile Earth (2017)
Robert May Self - Former President of the Royal Society (as Lord Robert May) Self - Former President of the Royal Society (as Lord Robert May) See fewer	State of the Planet (2000)
Patrick Michaels Self - University of Virginia (as Dr. Patrick Michaels) Self - University of Virginia (as Dr. Patrick Michaels) See fewer	Sizzle: A Global Warming Comedy (2008)
Christopher Monckton Self (as Viscount Christopher Monckton) Self (as Viscount Christopher Monckton) See fewer	Dispossession: The Great Social Housing Swindle (2017)
Frederick Singer Self - Science and Environmental Policy Project (archive footage) (as Dr. S. Fred Singer) Self - Science and Environmental Policy Project (archive footage) (as Dr. S. Fred Singer) See fewer	Sizzle: A Global Warming Comedy (2008)
Roy Spencer Self - University of Alabama in Huntsville (as Dr. Roy Spencer) Self - University of Alabama in Huntsville (as Dr. Roy Spencer) See fewer	Nova (1974)
David Bellamy Self (archive footage) (uncredited) Self (archive footage) (uncredited) See fewer	Choices for Tomorrow (1975)