| Zeresenay Alemseged | ... | Himself | |
| Bruce Bradley | ... | Himself | |
| Thierry Chaminade | ... | Himself | |
| Marina Davila-Ross | ... | Herself | |
| David Frayer | ... | Himself | |
| Ed Green | ... | Himself | |
| Selam Hailemariam | ... | Himself | |
| Donald Carl Johanson | ... | Himself (as Donald Johanson) | |
| Daniel Lieberman | ... | Himself | |
| Gina Mireault | ... | Herself | |
| Michael Oren | ... | Himself | |
| David Pogue | ... | Himself - Host | |
| Fred Spoor | ... | Himself | |
| Dietrich Stout | ... | Himself | |
| Cynthia Thompson | ... | Herself |
| Episode Crew |
Directed by | |||
| David Murdock | |||
| Joshua Seftel | |||
Writing credits(in alphabetical order) | ||
| Erika Frankel | uncredited | |
| David Murdock | ||
| Joshua Seftel | ||
Produced by | |||
| Paula Apsell | .... | senior executive producer | |
| Katie Bauer | .... | co-producer | |
| Catherine Bright | .... | associate producer | |
| Laurie Cahalane | .... | coordinating producer | |
| Patrick Carey | .... | associate producer | |
| David Condon | .... | producer | |
| Julia Cort | .... | executive producer | |
| Brian Edgerton | .... | producer | |
| Erika Frankel | .... | producer | |
| David Murdock | .... | producer | |
| Pamela Rosenstein | .... | producer | |
| Chris Schmidt | .... | senior producer | |
| Joshua Seftel | .... | producer | |
| Melanie Wallace | .... | senior series producer | |
Original Music by | |||
| Christopher Rife | |||
Film Editing by | |||
| Daniel Sheire | |||
| Marc Vives | |||
Production Management | |||
| Nathan Gunner | .... | post-production manager | |
| Jill Landaker Grunes | .... | production supervisor | |
| Stephanie Mills | .... | production manager | |
Special Effects by | |||
| Paul Theren | .... | special effects makeup | |
Camera and Electrical Department | |||
| Bruce Anderson | .... | camera operator | |
| Brian Dowley | .... | camera operator | |
| Robert Elfstrom | .... | additional camera operator | |
| Lincoln Else | .... | camera operator | |
| Vicente Franco | .... | camera operator | |
| Florian Gindra | .... | camera operator | |
| Ryan Hill | .... | camera operator | |
| David Murdock | .... | camera operator | |
| Rick Thompson | .... | camera operator | |
| Brett Wiley | .... | camera operator | |
Animation Department | |||
| Brian Edgerton | .... | animator | |
Editorial Department | |||
| Steve Benjamin | .... | assistant editor | |
| Rob Chapman | .... | additional editing | |
| Spencer Gentry | .... | post-production on-line editor | |
| Dave Markun | .... | colorist | |
| Jawad Metni | .... | additional editing | |
| Rebecca Nieto | .... | post-production editor | |
| Daniel Sheire | .... | on-line editor | |
| Olaf Steel | .... | post-production assistant | |
Music Department | |||
| Ray Loring | .... | music theme | |
| John Luker | .... | music theme | |
| Rob Morsberger | .... | music theme | |
| Walter Werzowa | .... | music theme | |
Other crew | |||
| Lauren Aguirre | .... | media director | |
| Kristine Allington | .... | project coordinator | |
| Kate Becker | .... | publicist | |
| Elizabeth Benjes | .... | business manager | |
| Sangeeta Bhatia | .... | advisor | |
| Linda Callahan | .... | production coordinator | |
| Eileen Campion | .... | publicist | |
| Rachel Connolly | .... | director of education | |
| Linzy Emery | .... | compliance manager | |
| Sarah Erlandson | .... | paralegal | |
| Janice Flood | .... | talent relations | |
| Ivan Hadingham | .... | senior science editor | |
| Charles Jennings | .... | advisor | |
| Scott Kardel | .... | talent relations | |
| Jill Landaker Grunes | .... | production assistant | |
| Karen Laverty | .... | publicist | |
| Richard Liston | .... | advisor | |
| Victoria Louie | .... | publicist | |
| A.J. Marson | .... | production assistant | |
| Alan Ritsko | .... | managing director | |
| Susan Rosen | .... | legal counsel | |
| Neil Shubin | .... | advisor | |
| Georgia Slade | .... | production assistant | |
| Georgia Slade | .... | researcher | |
| Kristen Sommerhalter | .... | administrator | |
| Riel Tanedo | .... | production assistant | |
| Rudolph Tanzi | .... | advisor | |
| Series Crew These people are regular crew members. Were they in this episode? |
Produced by | |||
| Mary Robertson | .... | producer (episode # 5) | |
Cinematography by | |||
| Robert Hanna | |||
Film Editing by | |||
| Mike Sheehan | |||
| Main series | Episode guide | Full cast and crew |
| Company credits | IMDb TV section | IMDb Documentary section |