杰伊·桑德斯

Jay O. Sanders

饰：Self - Narrator

Andrea Sella

Andrea Sella

饰：Self - University College London

Stephen Pacala

饰：Self - Princeton University

Ed Brook

饰：Self - Oregon State University

Katharine Hayhoe

饰：(as Dr Katharine Hayhoe)

Daniel Schrag

Daniel Schrag

饰：Self - Harvard University

Heidi Cullen

饰：Self - Monterey Bay Aquarium Research Institute

Greg Asner

饰：Self - Carnegie Institution for Science

Ralph Keeling

饰：Self - Scripps Institution of Oceanography

Waleed Abdalati

饰：Self - University of Colorado