Column

  1. Math

    Ticket to Cooperstown

    Is it getting easier to get into baseball's Hall of Fame?

    By Ivars Peterson
  2. Math

    Paper Bags and Tricky Folds

    Folding a grocery bag flat takes a special kind of effort.

    By Ivars Peterson
  3. Math

    Closing the Gap on Twin Primes

    A long-sought proof that there are infinitely many pairs of primes that differ by only 2 may not be far away.

    By Ivars Peterson
  4. Math

    Name Voyager

    A striking form of data visualization enhances the search for a suitable name for a baby.

    By Ivars Peterson
  5. Math

    Air Transport Central

    The world's air transportation network resembles the Internet.