Uncategorized

  1. Astronomy

    Cosmic Dawn

    New computer simulations suggest that the first stars in the universe were extremely massive and left behind gamma-ray bursts that may already have been detected by telescopes orbiting Earth.

    By Ron Cowen
  2. Health & Medicine

    What Activates AIDS?

    New studies suggest that a natural process called immune activation—the signaling that alerts immune cells of foreign invaders—plays a key role in explaining why infection with the human immunodeficiency virus progresses to AIDS more quickly in some people than in others.

    By Damaris Christensen
  3. Math

    A Stranger from Spaceland

    “It was the last day of the 1999th year of our era. The pattering of the rain To a Flatlander, a sphere passing through Flatland appears as a line of changing length.