science
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4-legged animals emerged earlier than thought
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Obama to honor outstanding teachers
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Researchers discover switchgrass-hungry moth, fly
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Hubble photo shows galaxies from toddler universe
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Geron sees anticancer activity in lab study
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Taiwan lawmakers ban some US beef imports
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Obama to honor teachers from across the country
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Study says Mich. climate plan would boost economy
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Mass. unveils landmark ocean-management plan
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Travel briefs, US
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Planet-hunting telescope unearths hot mysteries