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Ukraine admits its missile downed plane
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Wearable computer could rescue lost spacewalkers
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Mars engulfed by global dust storm
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Voice recognition software to search Holocaust recordings
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Camera traps snap rare rhino calves
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Surveillance pictures show Afghan attack damage
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Wearable computer provides virtual signposts
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Wristwatch gives remote control of computer
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Investigators struggle with Russian crash mystery
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Russian airliner in Black Sea crash mystery
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Satellites scan entire Afghan territory every week
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Engine changes capacity on the move
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