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  1. Chemistry

    Leaden news for city neighborhoods

    Researchers have identified more than 400 urban sites that may be highly contaminated with lead but had remained unknown to authorities for decades.

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  2. Chemistry

    Would you like wheat with that burger?

    Researchers have used wheat to make a biodegradable hamburger carton.

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  3. Gene therapy won’t replace Viagra—yet

    Scientists are making progress toward inserting genes to cure impotence temporarily.

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  4. Looking for osteoporosis in spit

    A dentist has found three compounds in saliva that could be used to gauge bone loss.

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  5. 18925

    “Oceans of electricity” was a fine article, but one line should have been added about the engineers of the ’30s who had plans to build wave-power electricity for the eastern United States.