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  1. Health & Medicine

    Preventive drugs protect children

    Preventive treatment with inexpensive drugs decreases rainy-season cases of malaria in Senegal.

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  2. Earth

    Some temblors probably were triggered by tides

    Detailed analyses of large earthquakes suggest that some of them may have been triggered by strong tides in Earth's crust.

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  3. Clock genes regulate blood sugar

    Circadian-clock genes may play an important role in governing the body's metabolism of dietary sugars and fats.

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  4. Earth

    Inhaled particles damage vascular lining

    Airborne soot and other pollutant particles can impair the ability of tiny vessels in the body to properly regulate blood flow, an animal study finds.