News

  1. Math

    Super Bowls and stock markets

    The predictive power of the Super Bowl "theory," which involves an apparent correlation between stock market performance and the results of the National Football League championship game, has declined precipitously in recent years.

    By Ivars Peterson
  2. Math

    Pursuing punctured polyhedra

    A mathematician has proved that it's possible to construct a mathematical shape made up of flat faces and straight edges in which every face has a "hole" where the vertex of one constituent polyhedron pokes into the face of another.

    By Ivars Peterson
  3. Health & Medicine

    New tests may catch bicyclers on dope

    Two new tests, on blood and urine, detect the presence of synthetic erythropoietin, a drug that boosts red blood cell counts and enhances stamina.