Yes, that is Friday and not Fried Mars Bar!
A few years ago I while working in a high school in Inverness I used some statistics about what the world would be like if reduced, in proportion, to a village of 100 people. You can see this a lot more powerfully at the highly visual Miniature Earth(stats may be slightly dated now).
I also stumbled across the following video (YouTube link) which is linked to this inspirational story!
[youtube=http://www.youtube.com/watch?v=dn0AVpGNhOs]