Vol. 165 No. #16 Archives

More Stories from the April 17, 2004 issue

  1. Materials Science

    Nanotubes take on the Grand Canyon

    A new technique can turn forests of carbon nanotubes into a foamlike material with ideal properties for making lightweight shock absorbers.

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  2. Tech

    Bacteria churn out new type of electronic paper

    Researchers have developed a new way of making flexible electronic paper displays using cellulose derived from bacteria.

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  3. Health & Medicine

    A drug to stop diabetes’ onset?

    Individuals susceptible to developing type 1 diabetes may find hope in a vaccinelike drug that is showing promise in mouse studies.

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  4. Chemistry

    Flame-retardant cotton gets a boost from clay

    Mixing cotton fibers with nanoparticles of clay increases the materials' heat tolerance, ultimately rendering new cotton fabrics flame retardant.

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  5. Anthropology

    Rock-solid choices of first toolmakers

    Human ancestors who took up stone toolmaking in Africa around 2.6 million years ago already showed a proclivity for choosing high-quality pieces of rock, a new study finds.

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  6. Archaeology

    Israeli cave yields Stone Age kills

    A recently discovered Israeli cave has yielded some of the earliest known evidence of hunting by humans or our evolutionary ancestors, from around 300,000 to 200,000 years ago.

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  7. Astronomy

    Sizing up a black hole

    Astronomers are closing in on the size of the supermassive black hole that lies at our galaxy's center.

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  8. Health & Medicine

    Drug for preemies linked to problems

    A steroidal drug used to combat lung inflammation in premature infants appears to have long-term negative effects.

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  9. Earth

    Weather Wise: Model may predict El Niño up to 2 years in advance

    A new version of a climate-prediction model that includes detailed interactions between the oceans and the atmosphere could be used to foresee the onset of the climate-altering phenomenon known as El Niño.

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  10. Get Mellow, Fellow: Male baboons cooperate after cultural prodding

    Researchers say they have found a troop of wild baboons in which females somehow transmit peaceful attitudes to males who transfer into the group.

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  11. Astronomy

    Rare Passage: Crab’s X rays probe Titan

    Observing a rare celestial alignment, astronomers have made the first X-ray measurement of the atmosphere of Saturn's moon Titan.

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  12. Health & Medicine

    Slimmer Ticks, Less Disease: Tick-semen protein is potential vaccine

    An antitick vaccine using a protein that causes female ticks to engorge on blood may control tick populations, a new study suggests.

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  13. Fat Chance: Hormone boosts metabolic rate, induces weight loss in mice

    Fat cells secrete a hormone that tells the brain to boost the body's metabolic rate.

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  14. Health & Medicine

    Categorizing Cancers: Gene activity predicts leukemia outcome

    By dividing acute myeloid leukemia into subtypes on the basis of which genes are abnormally active in a given patient, doctors may be able to predict outcomes and make better treatment decisions.

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  15. Chemistry

    Materials Factory: RNA manufactures palladium particles

    Chemists have evolved RNA fragments in the lab that spontaneously synthesize highly uniform, hexagonal-shaped nanoparticles of palladium.

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  16. Astronomy

    Shades of Venus

    On June 8, for the first time in 122 years, the silhouette of Venus will move across the face of the sun.

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  17. Tech

    Reinventing the Yo-Yo

    No longer simple toys, today's pricey yo-yos sport high-tech features—such as ball bearing transaxles and precision string-snagging mechanisms—that permit dazzling new styles and complex tricks.

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  18. Humans

    Letters from the April 17, 2004, issue of Science News

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