Best Video/How much does a shadow weigh? (How Much Does a Shadow Weigh?)

{{Application:Wikilook Blog/Article
 * blog=Best Video
 * module=Article
 * author=Gaijin
 * publishingtimestamp=2012/10/22 11:00
 * title=How much does a shadow weigh? (How Much Does a Shadow Weigh?)
 * categories=Science
 * leading=How much does a shadow weigh?
 * text={{ Widget YouTube Advanced | id = Do1lm9IevYE | width = 560 | height = 315 | language = en_US }}