To buy the series on DVD for viewing on Indigo, Amazon and HMV. To buy the series for education use To download the series on iTunes and Google Play For broadcast enquiries, contact FilmOption. Watch series on Demand on Vimeo. To encourage thoughtful and respectful conversations, first and last names will appear with each submission to CBC/Radio-Canada's online communities (except in children and youth-oriented communities). Pseudonyms will no longer be permitted. By submitting a comment, you accept that CBC has the right to reproduce and publish that comment in whole or in part, in any manner CBC chooses. Please note that CBC does not endorse the opinions expressed in comments. Comments on this story are moderated according to our Submission Guidelines. Comments are welcome while open. We reserve the right to close comments at any time. Comments FAQ Submission Policy Note: The CBC does not necessarily endorse any of the views posted. By submitting your comments, you acknowledge that CBC has the right to reproduce, broadcast and publicize those comments or any part thereof in any manner whatsoever. Please note that comments are moderated and published according to our submission guidelines. Subscribe to our newsletter Be the first to find out what's coming up on CBC Documentaries on TV & online. Never miss another program! Like CBC Docs Follow us @cbcdocs Add us on Google+ Buy Episodes & Learning Guides at Curio.ca Educators can watch and purchase many episodes and learning guides of Doc Zone and The Nature of Things for classroom use on our portal for educators.