How: 1. Divide a business card into thirds vertically. Fold the ends forward. 2. Cut it according to the diagram below. 3. Stand the card up, and rest your PSP on it to watch a movie.
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Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.