Talk about a split personality: Xentex Technologies' Flip-Pad Voyager has one huge 20-inch display that splits to serve two masters. Just rotate the right half 180 degrees, attach a keyboard and mouse, and you and a friend can separately surf the Web, read e-mail, or work on a project—or you can play a game head-to-head. If you're computing solo, the two halves complement each other with, say, a Web page on one side and a document on the other. At 12 pounds, it takes the two-laptops-in-one theme too far, but it double-folds into a diminutive 14- by 10- by 3-inch package.
Price: $4,995
Xentex Technologies
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.


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