Uncategorized

  1. Astronomy

    Enlarging a Mars photo album

    A new set of more than 18,000 images of Mars, posted online in early October, features the sharpest picture of the Red Planet ever taken by an orbiting spacecraft.

    By Ron Cowen
  2. Tech

    Triggering genes in a flash

    A light pulse can activate or deactivate selected genes in cells.

    By Peter Weiss

  3. 19196

    The article claims that Lake Agassiz became the world’s largest lake. It seems to me that the same conditions should have occurred in Asia. Shouldn’t you compare Lake Agassiz to glacier-dam-produced lakes in Asia and contemporary freshwater versions of the Black Sea and the Caspian Sea? Robert W. DavisMillburn, N.J.