Paul Giamatti

Narrator (voice)

Akito Kawahara

Self - Florida Museum of Natural History

Jesse R. Barber

Self - Boise State University

Mary Jane Epps

Self - Mary Baldwin University

Aaron Pomerantz

Self - PhD. Student at the University of California

Constantí Stefanescu

Self - Natural History Museum of Granollers

Jason Chapman

Self - Rothamsted Research

Peter R. Houlihan

Self - Biologist (uncredited)

Ann Johnson Prum