Uncategorized

  1. Math

    Prime proof zeros in on crucial numbers

    A new theorem may lead to a proof of Catalan's conjecture, a venerable problem in number theory concerning consecutive powers of whole numbers.

    By Ivars Peterson
  2. Animals

    First mammal joins the eusocial club

    Because naked mole rats exhibit permanent physical traits that distinguish certain castes of a colony, they belong to the same grouping as so-called eusocial insects such as bees, ants, wasps, and termites.

    By Laura Sivitz
  3. Earth

    Life Landed 2.6 Billion Years Ago

    Unusually carbon-rich rocks found in eastern South Africa may push back the evidence of life on land to 2.6 billion years ago, more than twice the current age of indisputably terrestrial organisms.