Jacques-Yves Cousteau

Self (archive footage)

Dian Fossey

Self (archive footage)

Birute Galdikas

Self

Jane Goodall

Self (archive footage)

Richard Kiley

Self - Narrator

Louis Leakey

Self (archive footage)

Mary Leakey

Self (archive footage)

Kent Vliet

Self (archive footage)

Ellen C. Stanley

Publicist

Gail Willumsen

Writer

Marilyn Gibbons

Publicist

Kathleen F. Teter

Publicist

Gail Willumsen

Producer

Barry Nye

Editor

Stephen Croes

Musician

Lisa Ann Glass

Assistant Editor

Nancy Severinsen

Music Supervisor

M. T. Badertscher

Online Editor

Jill Shinefield

Associate Producer

Teresa Koenig

Supervising Producer

Marjorie M. Moomey

Script Editor

Jay Chattaway

Music

Marjorie M. Moomey

Researcher

Kathryn Pasternak

Coordinating Producer

Barry Nye

Producer

Bob Barzyk

Online Editor

Nicolas Noxon

Executive Producer