NOVA Making North America: Origins53:31Video duration: 53:31 Aired: 11/04/15 Rating: TV-GVideo has closed captioning. Experience the colossal geologic forces that shaped our continent over 3 billion years. Add to WatchlistBuy this Video:Buy this video on iTunesBuy DVDShare:Share this video on FacebookShare this video on TwitterShare this video via EmailShare this video on Google PlusEmbed Code for this videoEmbed CodeNOVAMaking North America: OriginsPremiere Date: Nov. 4, 2015, 9 p.m.Width in pixels px Height in pixels px Please copy this text to your clipboard×CloseProblems Playing Video ?Report a problemClosed CaptioningReport a ProblemBefore you submit an error, please consult our Troubleshooting Guide.Type of ErrorVideo doesn't loadVideo loads, but doesn't playVideo jumps back/forwardOnly audio is streamingSponsorship playback errorOtherPlease add more detailsCancelSubmit ReportYour report has been successfully submitted. Thank you for helping us improve PBS Video.Close×CloseEpisode LinksNOVA's "Making North America: Origins" homepageE-Mail NewsletterShop NOVA Funding for NOVA is provided by David H. Koch, the Corporation for Public Broadcasting and PBS viewers. Additional funding is provided by the Alfred P. Sloan Foundation and George D. Smith.