Feature

  1. Tech

    Disappearing Ink

    Coming to your tattoo parlor soon: New inks that allow clients to have their designs cleanly erased if embarrassment or regret sets in.

    By Corinna Wu
  2. Plants

    Stalking the Green Meat Eaters

    Pitcher plants in a New England bog hold little ecosystems in their leaves, and also act as indicators of the bog's ecological health.

    By Susan Milius
  3. Astronomy

    Sputnik + 50

    The launch of Sputnik 1, 50 years ago, ushered in a scientific and technological revolution, but dreams of the human conquest of space have faded.

    By Ron Cowen
  4. Earth

    Clearly Concerning

    The toxicity of a chemical that leaches from a widely used plastic receives conflicting evaluations in two new reviews.