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In the February 25 Issue:

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Consciousness Emerges: Somewhere along a tangled path, sights, sounds and insights pop into awareness
Making Waves: Japanese quake gave scientists an unprecedented look at a big tsunami
Lessons from the Torpid: Hibernators have some helpful tips for keeping humans healthy

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Detecting tiny tumors

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View larger version | Researchers are designing plasmonic devices that could eventually detect small cancers. One idea (illustrated here) uses spacers, gold balls coated with dye and silica, to attach themselves to cancer cells and glow under laser light. Credit: Nicolle Rager Fuller

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