Shift Happens

Hey, thought this was interesting... Check it out...

http://www.youtube.com/watch?v=xHWTLA8WecI

This video was done by Karl Fisch: http://thefischbowl.blogspot.com/2006/08/did-you-know.html

He lists his sources at: http://www.lps.k12.co.us/schools/arapahoe/fisch/didyouknow/sourcesfordidyouknow.pdf