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  1. Tech

    Virtual Worlds, Real Science

    Epidemiologists and social scientists are tapping into virtual online worlds inhabited by millions to collect data with real-world uses.

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  2. From the October 16, 1937, issue

    Biological prospecting on two remote mesas near the Grand Canyon, a newly described and widespread form of meningitis, and primate fossils from the Crazy Mountains of Montana.

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  3. LEDs for the Rest of Us

    Light emitting diodes, better known as LEDs, are the coolest new light sources. They’re tiny, long-lived, and rugged. But how do they work? Check out this site if you desire considerably more detail than can be found in a two-sentence summary.