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The Dreamliner's wingspan is 197 feet, or about 25% longer than a similar-sized plane, which increases lift and reduces drag. Thanks to the 3-D modeling used for engineering and the ease of contouring the composite material, the wings are also more graceful than any aluminum plane's, with subtle curves that have a strong resemblance to a bird's wings.

Last updated April 23 2008: 10:17 AM ET