Vol. 168 No. #5
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More Stories from the July 30, 2005 issue

  1. Cell death may spur aging

    Genetic mutations in cells' internal powerhouses could contribute to aging by stifling tissue maintenance.

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  2. Archaeology

    Judeo-Christian ties buried in Rome

    New radiocarbon dates from one of ancient Rome's underground cemeteries, or catacombs, indicates that these structures were built in the Jewish community more than a century before early Christians started to do the same.

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  3. Astronomy

    A new X-ray eye on the cosmos

    To study some of the hottest regions in the universe, the Japanese Aerospace Exploration Agency has launched the coldest instrument ever flown.

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  4. Earth

    Weighty evidence on testicular cancer

    New evidence supports a theory that men who were exposed to excess estrogenic hormones at an early stage of fetal development may face an elevated risk of testicular cancer.

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  5. Physics

    In search of the imperfect nanocrystal

    Semiconductor nanocrystals can incorporate property-enhancing impurities into their growing structures as long as the crystals have facets onto which such atoms can strongly adhere.

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  6. Bipolar kids harbor unique brain trait

    Children and teenagers with bipolar disorder, a severe mental ailment that involves sharp mood swings, display unusually low tissue volume in a brain area involved in learning to regulate emotions.

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  7. Physics

    Why isn’t the sky violet, Daddy?

    A new analysis of why the sky looks blue reveals that the reason may be the combined effects of the atmosphere and of our eyes' color-sensing apparatus.

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  8. Astronomy

    Planet potential

    Observations with the Submillimeter Array on Hawaii's Mauna Kea reveal that, despite their bombardment by a stellar bully, the disks in Orion have enough material to form planets.

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  9. Physics

    Glints from Inner Space: Sensing Earth’s hidden radioactivity

    Physicists have observed signatures of radioactivity deep within Earth, enabling measurement of planet-wide thorium and uranium quantities.

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  10. Animals

    Wing Ding: Bird rubs feathers for cricketlike song

    Scientists say that they have found the first vertebrate to make its courtship music in the same way as a cricket does.

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  11. Paleontology

    Young and Helpless: Fossils suggest that dinosaur parents cared

    Skeletal remains found in the fossilized eggs of an early dinosaur hint that adults of the species may have cared for their hatchlings.

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  12. Boning Up: Tissue for grafts grown inside the body

    Scientists have discovered a new way to stimulate one part of an animal's body to grow extra bone tissue that can be transplanted elsewhere.

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  13. Fickle Finger’s Funny Feel: Digit illusion modifies touch perception

    The brain rapidly adjusts its internal map of the body's skin surface, according to a new study of people who underwent laboratory procedures that induced illusions of finger growth or shrinkage.

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  14. Planetary Science

    Cassini eyes youthful-looking Saturnian moon

    On July 14, the Cassini spacecraft came within 175 kilometers of the south polar region of Saturn's bright, tiny moon Enceladus, revealing a tortured terrain of faults, folds, and ridges.

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  15. Health & Medicine

    Echinacea Disappoints: There’s still no cure for the common cold

    The folk remedy echinacea shows no benefit against the common cold.

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  16. Earth

    What’s Gotten into Everybody? Survey of bodily contaminants finds encouraging declines and new exposures

    The U.S. population's exposure to lead, secondhand smoke, and certain other harmful chemicals has trended downward, but some newly measured contaminants are present in a sizable fraction of the nation's residents, according to an updated report.

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  17. Archaeology

    Seeing Past the Dirt

    Increasingly, researchers are using geophysical techniques such as ground-penetrating radar and magnetometers to target their excavations.

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  18. Humans

    Pushing Drugs

    Pharmaceutical marketing toward both patients and physicians appears to influence which medicines get prescribed.

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  19. Humans

    Letters from the July 30, 2005, issue of Science News

    Led astray The illustration of the solar system in “Roaming Giants: Did migrating planets shape the solar system?” (SN: 5/28/05, p. 340) does not represent the current orbit of the planets. Rather, it must be a frame from the computer simulation referred to in the article. William MeadowsDripping Springs, Texas Indeed, the image reflects the […]

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