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  1. Science & Society

    Here are the Top 10 times scientific imagination failed

    Some scientists of the past couldn’t imagine that atoms or gravity waves could one day be studied – or nuclear energy harnessed.

    By Tom Siegfried
  2. Anthropology

    North America’s oldest skull surgery dates to at least 3,000 years ago

    Bone regrowth suggests the man, who lived in what’s now Alabama, survived a procedure to treat brain swelling by scraping a hole out of his forehead.

    By Bruce Bower
  3. Microbes

    New images reveal details of two bacteria’s molecular syringes

    It’s unclear exactly how these species use their tiny injectors, but learning how they work could lead to nanodevices that target specific bacteria.