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  1. Life

    Find your inner fish with PBS series on human evolution

    A new documentary explores how the human body came together over 3.5 billion years of animal evolution.

    By Erika Engelhaupt
  2. Health & Medicine

    Triclosan aids nasal invasions by staph

    The antimicrobial compound triclosan, commonly found in soaps and toothpaste, may help Staphylococcus aureus stick around.

    By Beth Mole
  3. Anthropology

    Laetoli footprints show signs of unusual gait

    Contrary to prior study, 3.6-million-year-old hominids in Tanzania did not walk like humans.

    By Bruce Bower
  4. Anthropology

    Earliest case of a battered child found in Greece

    A baby living in Athens around 2,200 years ago was probably beaten to death.