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  1. Animals

    Little Professor: Ants rank as first true animal teachers

    The best evidence so far of true teaching in a nonhuman animal comes from ants. With video.

    By Susan Milius
  2. Humans

    Faked Finds: Human stem cell work is discredited

    South Korean scientist Woo Suk Hwang faked embryonic stem cell findings, say investigators from Seoul National University.

    By Nathan Seppa

  3. Masters of Disaster: Survey taps resilience of post-9/11 New York

    Telephone interviews with more than 2,700 people living in and around New York City yielded evidence of widespread psychological resilience during the 6 months after the September 11, 2001, terrorist attacks on the World Trade Center.

    By Bruce Bower

  4. 19631

    I experienced something very interesting after Sept.