"Shift Happens" (or "Did You Know?)
View this now famous video, described by YouTube as:
"An official update to the original 'Shift Happens' video from Karl Fischand Scott McLeod, this June 2007 update includes new and updated statistics, thought-provoking questions and a fresh design. For more information, or to join the conversation, please visit http://shifthappens.wikispaces.com --Content by Karl Fisch and Scott McLeod, design and development by XPLANE"
The version below was found on teachertube.com: