The Best Inventions Of 2007

From the phone that has changed phones forever, to futuristic cars, to a building made of water, to a remote-controlled dragonfly — a dazzling display of ingenuity

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This is what Barbie looks like now on her website and as snap-on window dressing for Mattel's Barbie Girls MP3 Player ($60). Geared to girls ages 10 to 13, the device is easy to load—it holds 512 MB, or about 120 songs—and sounds surprisingly good; when plugged into a PC's USB port, it also unlocks content on barbiegirls.com.

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