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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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SCALE FRICTION

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Snake scales overlap like the shingles on a house. Friction between the scales and a flat surface makes it twice as hard for the snake to slide sideways than forward, analyses reveal. Credit: IMAGES: David Hu/Georgia Tech

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