Feature

  1. Earth

    A Safe Solution

    A home-based technique for treating microbe-contaminated water with chlorine solution could save millions of lives in countries that are currently unable to provide residents with safe drinking water.

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  2. Astronomy

    Mature Before Their Time

    Some galaxies were in place and forming stars at a prolific rate when the universe, now 13.7 billion years old, was just an 800-million-year-old whippersnapper.

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  3. Math

    Knotty Calculations

    An alternative approach to quantum computing takes advantage of space-time knots and braids.

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  4. Mining the Mouse

    Recent analyses of the mouse genome illuminate human health and evolution.

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  5. Earth

    Proof of Burden

    Two teams of scientists report that the blood and urine of most Americans contain toxic cocktails of metals, artificial hormones, and chemical ingredients of plastics, flame retardants, pesticides, herbicides, and disinfectants.