Vol. 171 No. #25
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More Stories from the June 23, 2007 issue

  1. Health & Medicine

    Diabetes drug might hike heart risk

    People who take rosiglitazone, a popular diabetes drug marketed as Avandia, may face an increased risk of heart attack.

  2. Archaeology

    Ancient beads found in northern Africa

    Perforated shells found in a Moroccan cave indicate that northern Africans made symbolic body ornaments 82,000 years ago, long before Europeans did.

  3. Animals

    Moths mimic ‘Don’t eat me’ sounds

    Moths that make clicking noises at predatory bats are mimicking a defensive signal made by other moths that click and also taste bad.

  4. Earth

    Tree rings tell tale of megadroughts

    Tree rings in ancient timber show that the Colorado Plateau experienced a 60-year drought in the 12th century.

  5. Materials Science

    Heal thyself—again and again

    A new self-healing material can repeatedly repair damage at the same spot.

  6. Animals

    Clownfish noisemaker is new to science

    Clownfish make "pop-pop-pop" noises at each other by clacking their teeth together in a novel way.

  7. New player in cancer risk

    RNA snippets of a newly discovered type could be involved in the mechanisms of cancer.

  8. Health & Medicine

    Fluorine highlights early tumors

    Microscopic, fluorine-packed particles can make small, cancerous growths easier to detect.

  9. Crossing the Line: Technique could treat brain diseases

    With the help of a molecule from the rabies virus, scientists have for the first time selectively ferried a drug across the blood-brain barrier to treat a neurological disease in mice.

  10. Computing

    Mapping a Medusa: The Internet spreads its tentacles

    After tracking how digital information weaves around the world, researchers have concluded that, structurally speaking, the Internet looks like a medusa jellyfish.

  11. Health & Medicine

    Warning Sign: River blindness parasite shows resistance

    The parasitic worm that causes river blindness seems to be developing resistance to the only drug that controls it.

  12. Paleontology

    Winged dragon

    A quarry on the Virginia–North Carolina border has yielded fossils of an unusual gliding reptile that lived in the region about 220 million years ago.

  13. Materials Science

    Needling Cells: Stem cells could take their cues from silicon nanowires

    Scientists have grown mouse stem cells on a bed of silicon nano-needles, hoping that they will be able to guide the cells' development through electrical stimulation.

  14. Chemistry

    Beyond Ethanol: Synthetic fuel offers promising alternative

    A faster, simpler manufacturing technique could make a synthetic biofuel into an even stronger competitor to ethanol.

  15. Paleontology

    Jurassic CSI: Fossils indicate central nervous system damage

    Fossils found in the head-thrown-back position, the so-called "dead bird" pose, probably died from central nervous system damage.

  16. Animals

    Profiles in Courtship: Flirting male fish show their best sides

    Courting male guppies that sport a tad more orange on one side of their bodies than on the other tend to flash that brighter side at females.

  17. Earth

    Storm Center

    Scientists aboard planes that flew into the cores of Katrina and other hurricanes in 2005 collected unprecedented data on the structure and development of the massive storms.

  18. Health & Medicine

    Stents Stumble

    After a meteoric rise, stents coated with drugs to prevent renarrowing of clogged arteries have begun to fall from favor among cardiologists.

  19. Humans

    Letters from the June 23, 2007, issue of Science News

    Bad start In “Violent Justice: Adult system fails young offenders” (SN: 4/21/07, p. 243), an association is found between young offenders being tried as adults and increased criminal offenses later. The implication is made that one thing causes the other. Perhaps a better interpretation of the data would be that, because not every young offender […]