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http://www.sciencenews.org/view/dispatches
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PYTHON LIKES NEW HOME: LAYS CLUTCH OF EGGSOne of the big pythons in the U.S. Zoological Park recently celebrated her transfer to the more comfortable and homelike quarters of the new reptile house there by laying a clutch of 20 eggs.The picture on the cover of this issue of the SCIENCE NEWS LETTER shows her exercising the serpentine version of maternal care: most of the time, as a matter of fact, the eggs are kept quite invisible beneath her coils. The eggs, like many reptile eggs, have tough, parchment-like shells rather than the hard limy coverings characteristic of bird eggs.PARENTHOOD SEEM...Published: 05/04/2001
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Sealed within a transparent, tapered, liquid-filled cylinder, illuminated colored globs slowly rise and fall. Meandering and deforming, their shapes and paths change unpredictably. Invented in 1963, a decorative fixture in many homes during the 1970s, and still in production, Lava Lite lamps are now the object of renewed curiosity.Indeed, researchers have come up with a novel application of the mesmerizing movements of the lamp’s globules. They use them as the starting point for generating a sequence of random numbers. Called lavarand, the random-number generator is the tongue-in-cheek work of...Published: 05/02/2001Found in: Mathematics
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Sealed within a transparent, tapered, liquid-filled cylinder, illuminated colored globs slowly rise and fall. Meandering and deforming, their shapes and paths change unpredictably. Invented in 1963, a decorative fixture in many homes during the 1970s, and still in production, Lava Lite lamps are now the object of renewed curiosity.Indeed, researchers have come up with a novel application of the mesmerizing movements of the lamp’s globules. They use them as the starting point for generating a sequence of random numbers. Called lavarand, the random-number generator is the tongue-in-cheek work of...Published: 05/02/2001Found in: Mathematics
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Here’s a healthy tip for home vintners: Save the bathtub for cleaning your body—not for storing crushed grapes.A 66-year-old Australian man paid a high price for his habit of periodically tapping a pair of bathtubs for winemaking: periodic bouts of intense abdominal pain, constipation, and mood swings for more than 2 years.The incident came to light when the home vintner started canvassing the medical profession for respite from the pain. Despite a host of costly endoscopies, colonoscopies, ultrasound scans, and computed tomography scans, the source of this man’s discomfort eluded local health...Published: 04/30/2001Found in: Environment -
Anthrax has evolved from a disease that farmers sometimes caught from livestock to a potent biological weapon. The Centers for Disease Control and Prevention in Atlanta offers a highly accessible Web site that answers basic questions about transmission, treatment, and prevention of anthrax. The site also provides links to Web pages that explain the biology behind the disease and discuss the controversial anthrax vaccine used by the U.S. military.Go to: http://www.cdc.gov/ncidod/dbmd/diseaseinfo/anthrax_g.htm#currissue/Published: 04/30/2001Found in: Biomedicine
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HOLDER OF PRIESTLY OFFICE CARVED ABOUT 2400 B.C.Good sculptors, those Sumarians who lived in the land around about Ur of the Chaldees 4,000 years ago!This week’s cover picture shows the upper portion of a broken life-sized statue found at the city of Lagash, north of Ur. The features, finely cut, portray a man of dignity and reserve. The proportions of the body are skillfully handled. The arm muscles almost ripple beneath the stone, and the drapery over the left arm is softly folded.The statue, which is now being exhibited in London by Sydney Burney, is pronounced to date from the time of Gude...Published: 04/30/2001
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Biodegradable plastic that releases germ killers provides an example of what's known as active packaging, and scientists report progress toward taking this concept to market.Paul Dawson and his colleagues at Clemson (S.C.) University are fashioning plastics from proteins found in corn, soy, and wheat. While these biodegradable polymers are being heated or compressed to make a thin film, the food scientists add a sprinkling of a natural antimicrobial agent—usually nisin. This is a bacteriocin, an antibioticlike substance secreted by bacteria such as those harnessed to make yogurt and cheese. Ni...Published: 04/23/2001Found in: Food Science
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Created at the National Center for Atmospheric Research, this Web site features middle-school classroom activities with an atmospheric cycles theme. Topics include climate, greenhouse effect, global climate change, and ozone.Go to: http://www.ucar.edu/learn/Published: 04/23/2001Found in: Earth Science
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FUNGUS BEAUTIFIES SELF WITH FUR-TRIMMED EDGEThe picture on the front cover of this week’s SCIENCE NEWS LETTER looks like a fur-trimmed opera cloak for Queen Titania of the fairies, but it is nothing more romantic than a rather common small fungus, Schizophyllum commune, that feeds on dead sticks in the woods.The furry effect is due to the splitting and shredding of the edges of the cap. The photograph, which shows the plant at several times its natural size, is the work of Cornelia Clarke.SOYBEANS RECOMMENDED AS THE IDEAL HUMAN FOODSoybeans, 3 million acres of which are raised for cattle food ...Published: 04/23/2001
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One tradition that flourished 200 years ago in Japan, during its period of isolation from the western world, involved Euclidean geometry. Scholars and others would inscribe geometric problems on wooden tablets, then hang the tablets under the eaves of Shinto shrines and Buddhist temples as offerings. Such a tablet is called a sangaku, which means "mathematical tablet" in Japanese.More than 800 tablets have survived. Many of them feature drawings and problems that concern tangent circles.Here's one example. Suppose three circles are tangent to one another and rest on a base line. Find a relatio...Published: 04/19/2001Found in: Mathematics
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One tradition that flourished 200 years ago in Japan, during its period of isolation from the western world, involved Euclidean geometry. Scholars and others would inscribe geometric problems on wooden tablets, then hang the tablets under the eaves of Shinto shrines and Buddhist temples as offerings. Such a tablet is called a sangaku, which means "mathematical tablet" in Japanese.More than 800 tablets have survived. Many of them feature drawings and problems that concern tangent circles.Here's one example. Suppose three circles are tangent to one another and rest on a base line. Find a relatio...Published: 04/19/2001Found in: Mathematics
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STABILIZER REDUCES ROLLING ON ROUGHEST SEASEven during the stormiest weather there should be no sea-sick passengers on the vessel that will carry in her hold the 120-ton gyro-stabilizer pictured on the front cover of this week’s SCIENCE NEWS LETTER. The photograph shows the stabilizer on test in the South Philadelphia Works of the Westinghouse Electric and Manufacturing Co., where it was built to the order of the Sperry Gyroscope Co. for a foreign shipbuilder.The huge stabilizer is 11 feet in diameter. The rotor alone weighs 55 tons and is spun at 930 revolutions per minute by a built-in 200-h...Published: 04/16/2001
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For more than a decade, the Hubble Space Telescope has provided astronomers with astonishing views of the universe. This week, the Exploratorium in San Francisco hosts a series of Webcasts from the Space Telescope Science Institute in Baltimore to present a behind-the-scenes peek at how the space telescope is managed. Also check out several collections of spectacular Hubble images.Go to: http://www.exploratorium.edu/hubble/, http://hstexhibit.stsci.edu/, and http://oposite.stsci.edu/pubinfo/Published: 04/16/2001Found in: Astronomy
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By laying sheets of plastic across their fields, farmers can bring crops to market faster while reducing their vulnerability to many blights (SN: 12/13/97, p. 376). On the negative side, however, this polymer mulch creates impermeable surfaces over more than half of a planted field. That significantly increases the amount of rain and pesticides that runs off into nearby lakes and streams (SN: 9/25/99, p. 207). A new study on tomato fields shows that this runoff can kill fish, clams, and other aquatic life.Although farmers apply many different agricultural chemicals to tomatoes, copper-based pe...Published: 04/16/2001Found in: Environment
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People with diabetes face a high risk of heart attack and stroke. One apparent culprit is the chronic, low-grade inflammation that they develop. Megadoses of vitamin E can dramatically reduce that inflammation, a new study finds.Ishwarlal Jialal and Sridevi Devaraj of the University of Texas Southwestern Medical Center at Dallas studied 47 men and women with adult-onset, or type II, diabetes and 25 healthy volunteers. The scientists sampled people’s blood before and after each received 1,200 international units of vitamin E daily for 3 months.Before treatment, the 23 people with major diabetes...Published: 04/10/2001Found in: Biomedicine