Uncategorized

  1. Astronomy

    Images of a fiery youth

    A faint, infrared glow captured by the Spitzer Space Telescope might be light from the universe's first stars.

    By Ron Cowen
  2. Planetary Science

    Mars or Bust!

    Scientists are working to overcome the biomedical challenges that would hinder a human voyage to Mars.

    By Katie Greene
  3. Health & Medicine

    Staring into the Dark

    Amid a growing array of medications for treating insomnia, sleep researchers point to large gaps in their knowledge about which of these medicines work best and for how long they remain effective.

    By Ben Harder
  4. Math

    Problems to Sharpen the Young

    Medieval brainteasers have kept students and other people puzzled and entertained for centuries.