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  • News

    15 = 3 × 5: Photons do their first quantum math

    Two teams of physicists have independently confirmed that 15 equals 3 times 5—an arduous task considering that they've done it by manipulating the quantum states of photons. The results are a step toward optical quantum computers, which could do some calculations exponentially faster than ordinary computers can and crack the encryption codes that protect data traveling over the Internet....
    12/05/2007 - 13:10 Physics
  • Food for Thought

    Salmon Safety

    Two recent reports urge more fish consumption, including farmed salmon. But previous studies had warned against farmed salmon because of high levels of organic pollutants. So, do we eat it or don't we?A report published in Science 3 years ago warned that some kinds of salmon should be eaten at most once every 5 months. But in October 2006, an article in the Journal of the American...
    01/15/2007 - 23:14 Nutrition
  • Letters to the Editor

    Letters from the April 22, 2006, issue of Science News

    Second cousinsWith reference to "Chimps creep closer yet" (SN: 2/11/06, p. 94), some scientists say that bonobos are genetically closer to humans than to chimps. How did they compare in the referenced study?Dick MedvickCleveland Heights, OhioBonobos are indeed as genetically close to humans as are chimps, but there wasn't enough genomic...
    04/17/2006 - 19:10 Humans & Society
  • Feature

    Science News of the Year 2003

    Fighting off the virusesA couple of decades ago, if someone had asked whether you'd heard about "that new virus," you'd have know that they were concerned about a health threat. This year, you'd have needed to ask, "Medical or computer?" On both viral fronts, 2003 was eventful. A new viral disease emerged in China, and travelers spread it around the globe. A series of novel viruses and other...
    12/16/2003 - 12:27 Humans & Society
  • Feature

    Science News of the Year 2003

    Fighting off the virusesA couple of decades ago, if someone had asked whether you'd heard about "that new virus," you'd have know that they were concerned about a health threat. This year, you'd have needed to ask, "Medical or computer?" On both viral fronts, 2003 was eventful. A new viral disease emerged in China, and travelers spread it around the globe. A series of novel viruses and other...
    12/16/2003 - 12:27 Humans & Society
  • Food for Thought

    McDonald’s Cutback in Antibiotics Use Could Reduce Drug-Resistant Bacteria

    The fast-food chain McDonald's announced on June 19 that it will stop its farms under contract from feeding chicken, cattle, and pigs certain antibiotics intended to accelerate the animals' growth. That step might slow or reverse the rise of antibiotic-resistant bacteria that can infect people, scientists say."I'm delighted," says Stuart B. Levy of the Tufts University School of Medicine in...
    06/24/2003 - 14:04 Nutrition
  • Food for Thought

    School Lunches Are Struggling to Earn High Marks

    In the nation's schools, the presence of sweet, high-fat snacks in vending machines and on cafeteria lines is undercutting efforts by those institutions to improve the nutrition of U.S. youngsters. Or so conclude a pair of May 9 reports by the General Accounting Office (GAO), an investigative arm of Congress.Many schools have been improving their menus in recent years. Part of this reflects the...
    05/14/2003 - 15:50 Nutrition
  • Feature

    Science News of the Year 2002

    A year of twists and turnsWhat the world needs, say some people, is more one-handed scientists. That way, reports would have fewer sentences starting, "On the other hand. . . ."Actually, scientists need all the hands they can muster. Most of the phenomena they investigate are so complex that even carefully designed experiments can't take into account all possible influences on the results....
    12/17/2002 - 10:06
  • Feature

    Science News of the Year 2002

    A year of twists and turnsWhat the world needs, say some people, is more one-handed scientists. That way, reports would have fewer sentences starting, "On the other hand. . . ."Actually, scientists need all the hands they can muster. Most of the phenomena they investigate are so complex that even carefully designed experiments can't take into account all possible influences on the results....
    12/17/2002 - 10:06
  • Feature

    Science News of the Year 2001

    The year 2001 will be remembered sadly for a single date: Sept. 11. The horrific loss of lives to terrorism on that day overshadows all earlier events of the year. The fear instilled on Sept. 11 was soon exacerbated by bioterrorism, as anthrax spores sent through the mail caused additional deaths and provided a threat that seemed it might reach into any home or workplace. People immediately...
    12/19/2001 - 11:55