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