If you've never seen the rise and fall of humanity as told by a series of pulleys, levers, and CO2 rockets, now's your chance -- a team of Purdue engineers have built a contraption that not only tells the history of the world through the end of days, but is also a contender for the world's largest Rube Goldberg machine. The Purdue team's "Time Machine" catalogs a history of dinosaurs, war, and rock 'n roll before finally culminating in a cataclysmic inferno and efflorescent renewal i
