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  1. Humans

    Letters from the November 19, 2005, issue of Science News

    It’s not there “Organic Choice: Pesticides vanish from body after change in diet” (SN: 9/24/05, p. 197), as presented, doesn’t address the statement made in the headline. The article shows only that on days when no pesticides are ingested in food, no pesticides are excreted in urine. Charles WyttenbachLawrence, Kan. Sex differences I am dismayed […]

    By Science News
  2. Humans

    From the November 16, 1935, issue

    Bears on a diet, aluminum-plated steel, and a new test of relativity theory.

    By Science News
  3. Math

    Pentomino Pursuits

    Pentominoes are flat shapes, or tiles, formed by joining together five unit squares.