Diretor/a
Mike Fountain
DIRETOR/A
Elenco (na ordem dos créditos)
Graham Powell
Dr. Frederick Banting
Samantha Iles
Colonial Mother
Scott Zeiss
Thomas Hunt Morgan
Bill Nye
Host
Louise Rusnak
Librarian (2004)
Jared Morrison
Hans Krebs, biology episode, and Capt. Robert FitzRoy, evolution episode
Kevin R. Hershberger
Dr. Jones, medicine episode ca. 1846
Paul Bugelski
Johannes Keppler
Ed Mantell
18th Century Graverobber
Rob Gibson
Henri Becquerel, chemistry episode
Austin Murray
John Dalton
Jim Choate
Copernicus' Priest, astronomy episode
John Pagano
Dr. William Morton
Bill McIntosh
Copernicus
Sam Edens
Sir Isaac Newton
Stephanie Elisabeth Raven
Violin Student
Kathryn Coombs
Barbara McClintock, also background extra
Buzz Mooney
1820s surgery attendant, Evolution & Medicine episodes
Kathryn Kent
Mrs. Roentgen, medicine & chemistry episodes
Ben Kullman
Galileo Galilei, Alfred Wegener
James Thompson
Michael Faraday, physics episode
Daniel McMichael
Charles Darwin
Henry Raven
Small Pox Child
Stephen Wolfsberger
Dmitry Mendeleyev, Chemistry episode
Ron Hawkins
Wilhelm Roentgen, medicine & chemistry episodes
Keith E. Whitehead
Zoologist Eduard Van Beneden - Biology Episode
Jeffrey F. Smith
William Harvey, medicine episode
Charlie Leveridge
Boy with Diabetes
Kurt Grauf
Patientuncredited