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  1. Sizing Up the Brain

    Genetic mutations that produce small brains provide insight into the formation and evolution of the human brain.

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  2. Humans

    From the May 24, 1930, issue

    GRASSHOPPERS THREATEN UNITED STATES Grasshoppers threaten to wreak heavy damage to grain and forage crops in Montana and the Dakotas this year. There were many hoppers in these states, and in parts of Texas, last year, and the eggs they laid are now hatching in large numbers. If climatic and other conditions favor the growth […]

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  3. Explore Mars

    NASA has made more than 100,000 images of Mars available as a Web-based photo album. The archive of pictures, taken by the orbiting Mars Global Surveyor, covers the period from September 1997 to the present. Go to: http://www.msss.com/moc_gallery/index.html

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  4. Humans

    From the November 12, 1932, issue

    FIRST WELDED PENSTOCK BUILT IN CALIFORNIA Welding, an abundant source of beautiful photographs, furnishes another picture for the front cover of the Science News Letter this week; but beauty was not sufficient reason for its prominence in the cover position. The picture was taken within a welded pipe, one-fourth-mile long, tilted up a mountainside at […]

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  5. Health & Medicine

    Cooking Science

    The Exploratorium’s “Science of Cooking” Web pages offer all sorts of advice on how to improve your cooking–with a pinch of science. Information, recipes, and activities focus on spices, bread, meat, eggs, and more. Experience the thrill of pickle making and learn about a zesty dish called kimchi. Explore the science of cooking your holiday […]

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  6. Earth

    Pesticides block male hormones

    Some common pesticides can block the ability of androgens, male sex hormones, to trigger normal gene activities.

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  7. Earth

    Weed killer feminizes fish

    The weed killer atrazine can turn normally hermaphroditic fish into females, a new study shows.

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  8. Earth

    Is a faster commute worth it?

    Living near busy roads is bad for your heart and lungs.

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  9. Materials Science

    Worm’s teeth conceal odd mineral material

    A worm's teeth contain a copper mineral that could serve as a model for new materials.

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  10. Memory grows up in 1-year-olds

    As children enter the second year of life, they exhibit a marked improvement in recalling simple events after a 4-month delay, perhaps reflecting the growth of memory-related brain areas.

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  11. Astronomy

    Milky Way black hole gets real

    Tracing the path of a star orbiting near the center of our galaxy, astronomers have found the best evidence to date that a supermassive black hole lies at the Milky Way’s core.

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  12. Astronomy

    Cosmic rays from the solar system

    Dust grains from the Kuiper belt, a storehouse of comets and other frozen bodies in the outer solar system, are the source of some of the lower energy cosmic rays that bombard Earth.

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