The Cold War's wildest dreams of climate control have made a spectacular comeback: from the USA to China, 'geo-engineers' promise to make climate change the way we want. And they have found powerful supporters among lobbyists and entrepreneurs. This film is an investigation into the world-wide boom in geo-engineering. How did a pseudo-science with a controversial past become a planet-wide research subject?

Clive Hamilton
as Self

Nathan Myhrvold
as Self

David Keith
as Self

Matthew Watson
as Self

Matthew Watson
as Self - Volcanologist

David Keith
as Self - Physicist

Clive Hamilton
as Self - Ethics researcher

Nathan Myhrvold
as Self - Researcher

Connie Hedegaard
as Self

Lee Lane
as Self - Political Scientist