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  1. Humans

    Better protection from mad cow disease

    The Food and Drug Administration has announced several new measures to keep meat that's potentially infected with mad cow disease out of food supplies.

    By Janet Raloff
  2. Health & Medicine

    Surgery removes grenade from soldier’s head

    Colombian military doctors extracted an intact grenade from the head of a teenage soldier.

    By Ben Harder

  3. 19377

    Of course animals think, I’d say. But you say, “Many [scientists] theorized that nonhuman animals react to their surroundings without actually thinking.” My observation over the decades has been that most humans do the same, most of the time. George BlenderSan Diego, Calif. You don’t need all the elaborate experiments described in the article.