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  1. Health & Medicine

    Boning Up

    Biologists have discovered a mechanism for communication between two types of bone cell, and they're exploring the possible bone-growth-stimulating effect of popular cholesterol-lowering drugs called statins.

    By John Travis
  2. Animals

    Marine Mules: Near-sterile hyrids boost coral diversity

    Reef corals that spawn in great mixed-up soups of many species may be maintaining their diversity because their hybrids are sterile mules.

    By Susan Milius
  3. Health & Medicine

    Hemispheric Cross Talk: Brains show two sides of language function

    Some people coordinate language use with both sides of their brains, allowing them to retain verbal skills after damage to one side or the other.

    By Bruce Bower

  4. Evolution’s Death Row: Groups surviving mass extinction still go bust

    Groups of species may persist through major extinction events only to die off in the aftermath.