Vol. 165 No. #16
Archive Issues Modal Example

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.

  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.

  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.

  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.

  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.

  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.

  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.

  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.

  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.

  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.

  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.

  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.

  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.

  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.

  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.

  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.

  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.

  18. Humans

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

    Sphere criticism In “Candy Science: M&Ms pack more tightly than spheres” (SN: 2/14/04, p. 102: Candy Science: M&Ms pack more tightly than spheres), I read that an orb of a given size, when slightly flattened, will pack more densely than when perfectly round. No kidding? Do you suppose if we were to crush cars into […]