The final episode shows how the megafauna become extinct, and about how modern animals living on the continent have adapted to the increasing human population and development in North America.

In United States and Canada, a two-disc DVD format was released under the title "Prehistoric America" on 7 September 2004 by BBC Warner.

[12] The series was included with two additional programmes: A three-disc DVD format was released in China for Region 6 on 12 June 2008 by Excel Media.

[13] In United Kingdom, an accompanying hardcover format was written by Miles Barton, Nigel Bean, Stephen Dunleavy, Ian Gray and Adam White, with foreword by D. Bruce Means.

[14] (ISBN 0-563-53425-7) The companion volume for the US market, Prehistoric America: A Journey through the Ice Age and Beyond, was published by the Yale University Press on 8 February 2003.