Uncategorized

  1. Archaeology

    Seeing Past the Dirt

    Increasingly, researchers are using geophysical techniques such as ground-penetrating radar and magnetometers to target their excavations.

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  2. Math

    Paper Bags and Tricky Folds

    Folding a grocery bag flat takes a special kind of effort.

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  3. Humans

    From the July 20, 1935, issue

    A warning sign for pilots, better methods for producing radioactive substances, and making potatoes grow better with ultrasound.

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  4. Animal Skulls

    High school biology teacher DeLoy Roberts and his students have, over the years, assembled a large collection of animal skulls. This Web site provides dramatic images of the skulls, ranging, for example, from the armadillo to the wood rat among the mammals.