大卫·哈雷伍德

David Harewood

饰：Self - Narrator,

Kerry Emanuel

饰：Self - Massachusetts Institute of Technology,(as Prof Kerry Emanuel)

Katharine Hayhoe

饰：Self - Texas Tech University,(as Prof. Katharine Hayhoe)

Jason Dunion

饰：Self - University of Miami & NOAA

Adam Scaife

饰：Self - Met Office Hadley Centre,(as Dr Adam Scaife)