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  1. Health & Medicine

    Need for Speed: Faster-acting tuberculosis drugs now in testing would limit deaths

    Drugs that take only 2 months to cure tuberculosis instead of the usual 6 months could prevent millions of TB infections and deaths.

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  2. Astronomy

    Solar System Small Fry: Stellar blinks reveal tiny bodies near Pluto

    By measuring tiny dips in the intensity of X rays from a distant star, astronomers say they have detected more than 50 of the tiniest chunks of ice ever found in the outer solar system.

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  3. Paleontology

    New View: Method looks inside embryo fossils

    Using an X-ray–scanning technique, scientists have taken a high-resolution peek inside fossilized embryos of some early multicellular organisms.