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  1. Earth

    Tomato compound repels mosquitos

    New insect repellents based on a compound that contributes to the smell of crushed tomato leaves are under development.

    By Janet Raloff
  2. Materials Science

    Molecular template makes nanoscale helix

    Using ribbons made of organic molecules as minuscule templates, researchers have coaxed a semiconductor material into tiny helical coils.

    By Jessica Gorman
  3. Health & Medicine

    Watermelon red means lycopene rich

    Watermelon is a far better source of the carotenoid lycopene than tomatoes are and at least as well absorbed by the body.

    By Janet Raloff
  4. Humans

    From the July 9, 1932, issue

    MODERNISTIC BUILDING SHOWS ACHIEVEMENTS OF SCIENCE Strikingly modernistic in design and construction is the huge Hall of Science building in Chicago which has been dedicated as the key structure for the Century of Progress Exposition next year.