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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Modern Marvels

Modern Marvels Inventors Inventions Best of the Rest 2007

Jason DeCrow / AP Photo / The History Channel

Imagine a big new house with free heating—and cooling. Mike Sykes' Enertia Building System relies on thick wooden walls and a natural convection current to even out temperature extremes. For more on the winning entry in this year's Modern Marvels Invent Now Challenge, whose co-sponsors include the History Channel and TIME, go to history.com/invent.

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