Building Suspense Along the Trail of an Invisible Man
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âZodiacâ is about working things through intellectually and about the dawning of awareness, which encapsulates the experience of watching it.
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As the search for missing adventurer Steve Fossett  continues, rescuers are turning to a super-vision camera that can distinguish objects like wreckage far more efficiently than the human eye.
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Their gaze was frozen for mere seconds all those years ago, in a dimly lit alley, at a distance two men might keep were they having a game of catch. But it was seared into Joseph Foy's memory: the face of a serial killer.
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In one young patient, unidentified stalkers seek out openings to attack the vision.
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LOS ANGELES  - The man is gone, but the  voice is lingering on.
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Dotted around the globe are shadowy, short-range transmitters beaming strange radio messages across the planet. The messages are indecipherable, and often unlistenable. Nonetheless, they have their fans. By Jason Walsh.
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VIERA, Fla., Feb. 26 -- He is the forgotten man, off to the side and out of the way.
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Chances are you'll recognize Alice Fraasa, but you won't be able to figure out from where.
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Web users are being enrolled in a scheme to scour Google Earth images for the missing adventurer.
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Seeking opportunity in a market clouded by fear.
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Despite a heroic search-and-rescue effort, Microsoft researcher Jim Gray's disappearance off the California coast continues to baffle authorities.
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Thomas Perry: When Jack Till showed Wendy Harper how to disappear six years ago, he taught her too well. Now he's got to find her again, and it won't be easy. He just hopes he can track her down before it's too late.
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Military and civilian interrogators in Iraq who have long relied on the element of surprise and fear of the unknown find themselves having to explain their methods.
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Travel: Ian J Griffiths finds himself hooked on the macabre on a fascinating trip on the trail of Peru's ancient dead.
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The humble LED goes from strength to strength
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Scientists are working on a tethering system that could help explorers with the prospect of walking on a surface without much sticking power.
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Many travelers are chasing what may be a modern-day version of an old human impulse â to behold an untrammeled frontier.