a production of Matter of Fact Media, Inc. ; director, Christina Pochmursky ; producer, Vanessa Dylyn ; writer, Christina Pochmursky ; for CTV ; for National Geographic Channels International
by James Burke ; BBC ; produced in association with Time Life Films ; written and presented by James Burke ; produced by Mick Jackson and David Kennard
a Steven Latham Production for WGBH/Nova ; WGBH Educational Foundation ; produced by Steve Latham, Larry Klein, Evan I. Schwartz ; written by Larry Klein and Evan I. Schwartz ; directed by Steven Latham
produced by Joseph McMaster, Gary Johnstone, Vanessa Tovell ; directed by Gary Johnstone, Joseph McMaster ; written by Joseph McMaster ; a production by NOVA and Vulcan Productions, Inc. in association with The Big Table Film Company
a film by Kunhardt McGee Productions, Inkwell Films, and THIRTEEN Productions, LLC, in association with Ark Media ; senior producer, Rachel Dretzin ; written by Henry Louis Gates, Jr. ; directors, Phil Bertelsen, Leslie Asaka Gladsjo, Sabin Streeter, Jamilla Wignot