Word: bacterias
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...publicity is that of Dr. Leoncio Garza-Valdes, a San Antonio, Texas, pediatrician with interests in microbiology and archaeology. In 1983, while examining a Mayan jade artifact that art experts claimed was a recent forgery, Garza-Valdes discovered that it was covered by a lacquer-like coating produced by bacteria. Since it also had traces of ancient blood on it that should have been datable by the radiocarbon method, he took it to the University of Arizona dating lab, where scientists scraped off a sample of this natural "varnish" as well as the blood underneath it. They came up with...
...years later, working with microbiologist Stephen Mattingly of the University of Texas Health Science Center at San Antonio, Garza-Valdes determined that the coating was embedded with "coccal-shaped bacteria and filamentous mold-like organisms." In some places, the coating increased the diameter of the fibers as much as 60%--which the two scientists say could be enough to skew the radiocarbon dating by 1,300 years. What is more, this coating--which is transparent and thus invisible to the naked eye--cannot be removed by the conventional cleaning methods of most radiocarbon labs. Properly cleaned, says Mattingly, "I think...
...insistence, the Explora blends in with its surroundings. Hotel waste is treated with a complex system of filters, ultraviolet light and two kinds of beneficial bacteria so the sewage is crystalline before it enters Lake Pehoe. The staff burns dead wood purchased outside the park, places generators in soundproof sheds to prevent noise pollution, and uses some solar power...
...would head north along the traditional migratory path to Alaskan waters, but at the end of the week both transmitters attached near her blowhole had come loose, forcing researchers to try to track her visually. The trick for J.J., her keepers say, will be to remain free of aquatic bacteria, avoid killer whales and learn to feed herself at sea. Still, spirits were high as the Conifer returned to port. "I've got a cold one waiting at home," said a grinning Yip. Then he amended: "Bud, of course...
BIRD BATH The FDA has approved a spray for baby chicks that reduces disease-causing salmonella. Called Preempt, it contains natural, beneficial bacteria that help the birds resist the salmonella...