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  1. Earth

    The Fires Below

    Underground coal fires help shape the landscape on many scales and in many ways, some transient and some long-lasting.

    By Sid Perkins

  2. 19240

    I was diagnosed 12 years ago with Klinefelter’s syndrome, which has as a symptom low testosterone. After starting bimonthly injections of testosterone, I experienced some mild body changes but nothing excessive. I’m nearly 65 but feel like I’m 55. Testosterone may kill me some day by causing prostate cancer, but I’ll gladly take the risk […]

    By Science News
  3. Health & Medicine

    Unproven Elixir

    For aging men with low testosterone, hormone replacement may stall or counteract some common declines that come with age, but it'll take years to determine whether the treatment is doing most men more good than harm.