Part of an interesting video series, Do You See What I See. The first part of this link shows an African tribe, the Himba, whose language and environment differ so much from ours that they are able to distinguish different shades very differently from us. The link below is for the part that shows the Himba tribe. At the bottom of the video player are links for the rest of that show.
http://www.dailymotion.com/video/xl7eh1_horizon-do-you-see-what-i-see-part-4-4_shortfilms
Here is an new york times article about the same issue.
http://6thfloor.blogs.nytimes.com/2012/09/04/its-not-easy-seeing-green/
TOK Topics 