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61 Power Output of Healthier Americans: 3650 gWh/year Hank Green 24063
62 Bike Rack Air Pump Philip Proefrock 18831
63 Sony: Children Should Power Their Own Toys Evan Vella 20326
64 Folding Bike Bag Charges iPods 23964
65 Aerorider: Three-Wheeled Enclosed Electric Bike 32389
66 Biker Gets Head Run Over...Is Just Fine Hank Green 19236
67 Electric Bikes: A Viable Alternative Hank Green 25460
68 Is it a Bike...or a Suitcase? Hank Green 15418
69 Muscle Power to Electric Power Hank Green 17623
70 Uhhhhhh....Strange Fast Bike Thing (with or without scary lady) Hank Green 19736
71 Weight to Watts Hank Green 21221
72 Ktrak SnowBike Hank Green 22886
73 The Best of the Best: Folding Bikes Hank Green 317290
74 Pull-String Power Hank Green 22721
75 Pedal Powered Laptop Hank Green 20604
76 Pedestrian-Generated Power Philip Proefrock 22801
77 DIY Human-Powered Tic Tac Light Hank Green 19201
78 Gerbil Wheel Elevator Hank Green 17912
79 Portable Squeeze Charger Hank Green 18776
80 A wind-up flashlight from Freeplay 17586
 
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