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  1. Health & Medicine

    Antibiotics don’t seem to protect heart

    Two large studies find little evidence that antibiotics can protect some people with cardiovascular disease against subsequent heart attacks.

    By Ben Harder
  2. Animals

    Maneless lions live one guy per pride

    The male lions of Tsavo National Park don't grow manes but they're no wimps—they're the only male lions found so far that rule big prides of females alone, without help from some buddies.

    By Susan Milius
  3. Health & Medicine

    Folate cuts family risk of colon cancer

    According to a 16-year study of nearly 90,000 women, the vitamin folate has a protective effect against colon cancer among women whose families have been affected by the disease.