It's Alive

  1. Animals

    These lizards bleed green

    Blood and bones turn naturally green in island lizards. Their evolutionary history still needs explaining.

    By Susan Milius
  2. Animals

    To prevent cannibalism, bring chocolate

    If a date goes bad for a nursery web spider, a romantic gift can serve as a shield.

    By Susan Milius
  3. Animals

    Cave-dwelling salamander comes pigmented and pale

    Something’s funny in the family tree of pale, slinky cave salamanders.

    By Susan Milius
  4. Animals

    Piggybacking tadpoles are epic food beggars

    Tadpoles beg so frantically among mimic poison frogs that researchers check to see whether they’re just scamming.

    By Susan Milius
  5. Animals

    Harvester ants are restless, enigmatic architects

    Florida harvester ants dig complex, curly nests over, then leave and do it again.