Science News

All Stories by Science News

  1. 19221

    Your article reports that chemically synthesized erythropoiesis protein (SEP) was more effective than the genetically engineered molecule. Is there speculation on why that is? Ann DershowitzWest Orange, N.J. Chemically constructed SEP molecules are much more consistent in size, shape, and other properties than genetically engineered erythropoietin. The polymer appendages put onto the molecule protect SEP […]

  2. 19220

    I am puzzled by Shuming Nie’s prognostication that quantum dots will “be the first example of nanotechnology that can really have some practical applications.” Colloidal gold particles of similar size to quantum dots have been used as high-resolution labels in electron microscopy for over 30 years. And due to their light-scattering properties, gold and silver […]

  3. Tech

    Bridge Building

    For those fascinated by the art, science, and history of building bridges, this Web site provides a wealth of information and images devoted to structures designed to span obstacles of various sorts. Check out different bridge types, key components of bridges, explanations of forces that act on bridges, and much more. Go to: http://www.brantacan.co.uk/bridges.htm

  4. Humans

    From the February 11, 1933, issue

    YELLOW SODIUM LIGHT EFFECTIVE OUTDOORS A commercial application has been found for the extremely efficient sodium-vapor lamp. A highway in Holland is now illuminated with these light units giving off an intense yellow glow; and this light, which makes color discrimination impossible and is devastating to Miladys makeup, is said to be especially desirable for […]

  5. 19216

    Years of budgetary constraints and compromises have all but destroyed NASA’s ability to deliver on the grand visions of yesteryear. Sadly, I think that the best outcome of this tragedy would be to acknowledge that the shuttles are unsafe at any speed. Perhaps the national embarrassment is just what the U.S. government needs to get […]

  6. 19175

    This article makes disturbing use of Neal Barnard as a spokesman warning against the high-protein weight-loss diet. Barnard represents Physicians Committee For Responsible Medicine (PCRM). What’s not to love about an outfit with a name like that? PCRM places op-ed pieces condemning animal products, and it advocates a vegan agenda. A more balanced response might […]

  7. 19215

    I wish the testing described in this article had used airline pilots, policemen, and other people who are accustomed to operating their machines while carrying on a conversation. Cell phones are new, and perhaps all that is needed is time for drivers to train themselves in multitasking. Mike KuzaraWyarno, Wyo. Shortly after reading the article, […]

  8. 19174

    I scuba dive, and I’ve noticed that when the current is brisk through some coral formations, small swirls behave exactly as dust devils. Would the researchers predict that any magnetic phenomena could be produced by silt in salt water? Lindsey Randal Potts San Antonio, Texas Probably not, says William M. Farrell of NASA. Any charges […]

  9. 19214

    Your article refers to “the current theory that high intelligence arises from the coating of brain cells with especially large amounts of the fatty substance called myelin.” As a person with multiple sclerosis, anything about myelin interests me greatly, yet I have never heard of this. Marion Leeds Carroll Arlington, Mass. For more, see Daniele […]

  10. 19173

    Erik Trinkaus argues that fossil evidence shows signs of considerable interbreeding of Neandertals and modern humans. However, I don’t believe that proves we could have Neandertal ancestors. Couldn’t crossbreeding result in sterile offspring, such as is seen in mules? Anne Wittke Flagstaff, Ariz. Sure. Trinkaus argues, however, that the presence of Neandertal traits on the […]

  11. 19162

    I think that your readers should be aware that this article on beach erosion is based upon a report by the Heinz Center for Science that’s being widely disputed. Susan Halsey’s opinion that nothing can be done to stop these losses is in direct conflict with a National Research Council report, “Beach Nourishment and Protection,” […]

  12. Humans

    From the February 4, 1933, issue

    SUPERLATIVE SPLENDOR REVEALED BY EXCAVATIONS IN PERSIA Eastern magnificence that surrounded Persian emperors 2,500 years ago is revealed by excavations at Persepolis. Palaces of the kings are being brought to light there by Dr. Ernest Herzfeld excavating for the Oriental Institute of the University of Chicago. The sculptured walls arouse comparisons with glories of one […]