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  1. Humans

    From the March 6, 1937, issue

    Machines creating new jobs, stopping smoke with sound, and conflicts over atomic structure.

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  2. Earth

    National Environmental Education Week

    The third annual National Environmental Education Week will take place April 15-22, 2007, culminating with Earth Day on April 22. This site provides information about activities planned for that week. Go to: http://www.eeweek.org/

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  3. Tech

    Unlocking the Gaits: Robot tests locomotion switch

    A blocky, bright-yellow robot that would look at home in a toy chest moves like a salamander, just as its inventors intended.

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  4. Math

    Functional Family: Mock theta mystery solved

    Mathematicians have solved a legendary Indian mathematician's final problem.