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  1. Space

    A bid to implode cosmic ray theory

    Streams of fast-moving particles aren’t fueled just by supernovas, a new study suggests.

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  2. Health & Medicine

    Body & Brain

    Ibuprofen may help fend off Parkinson’s, plus bone boosters and smokers’ brains in this week’s news.

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  3. Enzyme revives long-term memories

    Increasing levels of a natural substance in the brain helps rats remember old times.

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  4. Life

    Good gene type for cancer bad for stroke

    A DNA variant that helps prevent tumors may diminish the brain’s recovery after an interruption in blood supply.

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  5. Life

    Life

    Bats are savvy shoppers for insect snacks, plus heartless dinos and worm evolution in this week’s news.