Nathan English

饰：Himself - Geochemist, University of Arizona

维克多·加博

Victor Garber

饰：Himself - Narrator

Andrew C. Isenberg

饰：Himself - Historian, Temple University

K.J. Linhein

饰：Hernando De Soto

Hans Mittermüller

饰：Himself - Narrator

Joachim Radkau

饰：Himself - Historian, University of Bielefeld

Callum Roberts

Callum Roberts

饰：Himself - Marine Conservation Biologist, University of York