A single breakout season can earn a major league baseball player the accolade of his own bobblehead doll. Scientists have a tougher time, though. Nobel laureate James Watson had to wait 50 years to earn head-nodding credibility; he joins a small pantheon of scientists so honored. Francis Crick, Watson's colleague in the discovery of DNA's structure, hasn't made the cut, but Albert Einstein has. And for the psychiatry world, Sigmund Freud nods approvingly.



If Watson personifies the scientific method, Steve Davis, 43, exemplifies the wild inventor. His laboratory: a tree house perched 75 feet above the ground in Scappoose, Ore. Davis' latest contribution to the world of science is the Vectron Ultralite, promoted as the first and only flying saucer that lifts off and flies without wires, cords, or tethers. Powered by conventional or rechargeable batteries, the device...

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