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  1. Health & Medicine

    Proteins’ Promise: New test could reveal early ovarian cancer

    A screening test for ovarian cancer shows promise in preliminary trials.

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  2. Physics

    Galactic data shore up a constant

    Alpha, a constant of nature found to vary in some astrophysical studies, actually holds steady, according to the first survey of galaxies used to evaluate alpha's constancy.

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  3. Physics

    Scales tilt against five-quark particles

    Studies that fail to find purported five-quark particles, or pentaquarks, are stacking up quicker than studies that claim to have found such particles, suggesting that they might not really exist.

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  4. Physics

    Test puts pedal to heavy metal

    Stellar explosions forge heavy elements such as gold more quickly than scientists had predicted, as indicated by the first measurement of the half-life of a rare form of nickel that's a key link in the chain of element formation.

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  5. Chemistry

    Crystal clear

    Growing drug crystals on different polymer surfaces could improve a critical step in the development of pharmaceuticals.

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  6. Earth

    Air pollution linked to wheat diseases

    The abundance of the air pollutant sulfur dioxide appears to influence which of two fungal pathogens plague more wheat plants.

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  7. Health & Medicine

    Waking up that lazy eye

    Wearing an eye patch can improve vision in children with amblyopia, or lazy eye, up to age 17.

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  8. Learning to Listen

    Disparate groups of creatures, including bats, toothed whales, and birds, have evolved biological sonar that they use to track prey, but other creatures have evolved ways to detect this sonar and thereby increase their odds of survival.

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  9. Materials Science

    Something to Chew On

    Researchers are closer than ever to making synthetic enamel to improve dental implants and perhaps to grow a whole tooth from scratch.

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  10. Math

    Coins in a Row

    A simple game involving coins in a row has unexpected complexities.

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  11. Humans

    From the May 4, 1935, issue

    New National Academy of Sciences president, discovery of element 93 confirmed, and brains studies involving a monkey swinging on a trapeze.

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  12. Archaeology

    Cuneiform Tablets

    This Web exhibit from the Library of Congress displays 38 ancient clay tablets and other artifacts that feature the ancient form of writing known as cuneiform. The items include various accounting records (receipts and bills of sale) and school exercises. Go to: http://international.loc.gov/intldl/cuneihtml/

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