News

  1. Physics

    Dune leapfrogging is deciphered

    Some wind-propelled sand dunes can pass right through each other if their relative sizes are right, new computer simulations indicate—although the sand grains of one dune don't actually penetrate through the other dune.

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  2. Physics

    Dune leapfrogging is deciphered

    Some wind-propelled sand dunes can pass right through each other if their relative sizes are right, new computer simulations indicate—although the sand grains of one dune don't actually penetrate through the other dune.

    By
  3. Humans

    Letters

    Letters from the Dec. 20 & 27, 2003, issue of Science News.

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  4. Humans

    Letters

    Letters from the Dec.