Uncategorized

  1. Ecosystems

    Big Foot: Eco-footprints of rich dwarf poor nations’ debt

    The first global accounting finds rich and middle-income nations stomping heavy footprints on poorer ones.

    By Susan Milius
  2. Math

    Benjamin Franklin Plays Sudoku

    Founding father entertained himself devising beautiful mathematical puzzles.

    By Julie Rehmeyer
  3. Astronomy

    Four’s a crowd

    Astronomers have found a quartet of stars packed into a region smaller than Jupiter's orbit around the sun.

    By Ron Cowen
  4. Astronomy

    Gravity at play: A double lens

    Astronomers have discovered an extraordinarily rare double cosmic mirage.

    By Ron Cowen
  5. Astronomy

    Case of the misshapen disk

    A deformed disk around a young star may have gotten its swept-back appearance as the result of a collision with a dense gas cloud.