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Body & Brain

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NUMBER NERVOUSNESS People anxious about doing math use certain brain networks differently when doing arithmetic, which suggests they might use different problem-solving strategies than people who aren’t anxious about math.

spraying DDT

DISEASE DEFENSE  To control the spread of dengue in Bangkok, DDT is sprayed to kill mosquitoes, the primary insect that transmits the virus.

GROWING PAINS  As cells divide and grow to replenish and repair organs, accidental mutations may crop up in cancer-associated genes. A new study suggests such random mistakes are the source of 66 percent of mutations in cancer cells (illustrated here) across the board.

Body & Brain

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