Uncategorized

  1. Astronomy

    Age of the universe: A new determination

    Analyzing the faint glow left over from the Big Bang, scientists report measuring the age of the cosmos with unprecedented accuracy—14 billion years, accurate to within half a billion years.

    By Ron Cowen
  2. Math

    Tolstoy’s Calculus

    “Absolute continuity of motion is not comprehensible to the human mind. Laws of motion of any kind become comprehensible to man only when he examines arbitrarily selected elements of that motion; but at the same time, a large proportion of human error comes from the arbitrary division of continuous motion into discontinuous elements.” This striking […]

    By Ivars Peterson
  3. Health & Medicine

    Team locates anthrax-receptor protein

    Scientists have identified the protein that enables the anthrax toxin to attach to cells and trigger disease, while another team has mapped the molecular structure of the toxin component that does most of the damage to cells.