2011 Rube Goldberg Machine Contest : Winning Entry

"The winning entry was based on a time machine that followed the history of the world from the big bang to the present. It took 212 steps to finally reach a symbol of hope for the future, a mystery box that, when opened by the machine, produced a plant and a watering can.

Captain Zach Umperovitch said the 17 team members spent 2,500 man hours building the machine."