Errol Fuller

饰：Self

Paul Pearce-Kelly

饰：Self

Beth Shapiro

饰：Self,(as Dr Beth Shapiro)

David Cowdrey

饰：Self

Rosa Hill

饰：Self

Michael Boulter

饰：Self,(as Prof Michael Boulter)

贾雷德·戴蒙德

Jared Diamond

饰：Self,(as Prof Jared Diamond)

Peter Ward

Peter Ward

饰：Self,(as Dr Peter Ward)

爱德华·威尔逊

Edward O. Wilson

饰：Self,(as Prof E O Wilson)

Peter Ward

Dilly Barlow

Dilly Barlow

饰：Self - Narrator,

Vincent Courtillot

饰：Self,(as Prof Vincent Courtillot)

Julian Hume

Julian Hume

饰：Self,(as Dr Julian Hume)