Uncategorized

  1. Ecosystems

    Cryptic Invasion: Native reeds harbor aggressive alien

    A mild-mannered reed native to the United States is getting blamed for the mayhem caused by an evil twin.

    By Susan Milius
  2. Humans

    And Counting . . . : Latest census resets U.S. population clock

    The 2000 census missed a little more than 1 percent of the nation’s population, due in part to a surge of undocumented immigrants to the United States in the late 1990s.

    By Sid Perkins
  3. Archaeology

    Almond Joy, Stone Age Style: Our ancestors had a bash eating wild nuts

    New finds at a 780,000-year-old Israeli site indicate that its ancient residents used stone tools to crack open a variety of hard-shelled nuts that were gathered as a dietary staple.