Uncategorized

  1. 19721

    I was sorry to learn Pluto did not qualify as a planet (this article and “Doggone! Pluto gets a planetary demotion,” SN: 9/2/06, p. 149). Pluto has a diameter comparable with the Earth’s moon. The size of our moon relative to Earth might cause any observer to consider Earth and its moon as double planets. […]

    By Science News
  2. Chemistry

    Mulch matters

    Mulch made from recycled construction and demolition wood can release arsenic into the environment.

    By Aimee Cunningham
  3. Earth

    Grand Canyon fish seem to be rebounding

    The population of humpback chub, an endangered fish found only in the Colorado River and its tributaries, may be stabilizing in some sections of the Grand Canyon.