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  1. Earth

    Second cancer type linked to shift work

    Women who have worked at least a few nights a month for many years appear to face a somewhat increased risk of colorectal cancer.

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  2. Anthropology

    The Ultimate Colonists

    Human ancestors managed to adjust to life in a variety of ecosystems during the Stone Age, indicating that their social lives were more complex than they've often been given credit for.

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  3. 19259

    Yes, trying to pin an actual date and time of the day to van Gogh’s painting is an intellectual exercise, but no one should believe this is possible. An artist plays with what’s seen. One only need look at van Gogh’s painting.