Core Spins Faster Than Earth, Scientists Find
...s, so that over a billion years, the innercore has grown steadily to its present diameter of 1,500 miles.(The inner and outer core together are 4,350 miles wide and theEarth's diameter is about 7,900 miles.) The electrical currentsand convecting movements within the Earth's liquid core generatethe planet's...Human-Like Ability, Categorical Perception, Found In Insects
...t enough" to get a subject's attention when it has grown accustomed to (or habituated to ) repeated stimuli. Babies respond less and less when they hear "pa" repeated over and over; they pay attention again when the experimenter throws in a dishabituating "ba." Repeated stimulation at 20kHz habituated W...Duke Ecologist Says Logging Is Creating 'Mahogany Deserts'
...orers can quickly decimate young mahogany saplings grown close togetherin rows without the protection of a surrounding cover of other tree species,she said. In nature, the surrounding trees would divert many of the caterpillarsfrom attacking the mahoganies. "There are people who are still working with ma...Selenium Supplements Can Reduce Cancer Rates
...ome nuts can also be high in selenium if they were grown in high-selenium areas. Of the 40 nutrients currently recognized as essential for human nutrition, selenium was the last to be recognized in 1957. A key component for at least two essential enzymes, selenium provides the body with antioxidant protec......ants lacking vitamin C had shriveled leaves. When grown in an ozone-contained environment, those plants, the ones with shriveled leaves, were not able to cope with environmental stress." Their study, "Environmental stress sensitivity of an ascorbic acid-deficient Arabidopsis mutant," in the Proceedings of...High Levels of Vitamin C Prove Toxic to HIV
...urnal of Biological Chemistry. HIV-infected cells grown in the laboratory appear to be more sensitive to the toxic effects of vitamin C, explained Dr. David W. Golde , Physician-in-Chief of Memorial Hospital and senior author of the paper. At the same levels of exposure, the HIV-infected cells took in m...Purdue Researchers Prod Plants To Clean Up Pollution
...roots to reject heavy metals, Goldsbrough says. If grown in areas where soil is contaminated, such bioengin...rontium just as it does calcium. They already have grown tobacco seedlings that take up more than 1 percent of their dry weight in strontium. If they can fin...Isle Royale Moose Continue Decline
...eterson notes that the park's moose population had grown dramatically over the past 15 years. This was due to a population crash in '81 - '82 of their only predator, wolves. That wolf decline coincided with the arrival of canine parvovirus in the region. The dynamic relationship between moose, wolves, thei...Fighting Wheat Scab In New York State
...of plant pathology. In New York, winter wheat is grown on 120,000 to 150,000 acres annually, primarily in the western and central parts of the state, he said. The wheat grain, with a New York grower cash receipt value of approximately $30 million annually, also is milled and processed by several New Yor...Pharmaceuticals Manufactured In Insect Larvae
...day, or the fifth larval stage, the proteins being grown in the bug are ready for harvest. Hughes says the bug never reaches pupation, and if the protein is not harvested from the caterpillar during this crucial larval stage, the proteins are destroyed. Farming the pharmaceuticals becomes easy using a re...New "Wonder Peanut" Beats Olive Oil In Healthful Benefits
...enough seed for growers, this year's crop is being grown in five major peanut-producing states: Florida, Georgia, Alabama, South Carolina and Texas. Gorbet has spent 27 years working on peanut breeding. He says SunOleic 97R is a significant development - for both the peanut industry and the consumer - beca...Dendritic Cell Therapy For The Treatment Of Cancer
...parated from the patient's bloodor bone marrow and grown in large quantities in culture. They can then be .... Dendritic cells from the patients' blood will be grown and induced to developinto their mature form in culture. They will then be injected directly into t......lants have zero tolerance forthe disease, potatoes grown in the United States must be inspected and certifieddisease-free before being shipped out of state or overseas. When this bacteria encounters its potato plant host, a series of complexinteractions take place that signal the bacteria to invade...STS-89 Will Carry Five Science Payloads From NASA/Marshall
...with such experiments. In onecase, scientists have grown crystals of HIV protease inhibitor that aresignifi...in, a protein found in a type of fish egg. Samples grown one twoSpace Shuttle flights in 1997 showed extraordinarily high resolution whenscanned by X-rays, a...UMass Researchers Announce Birth Of Genetically Modified Cloned Calves
...tists hope to produce. These select cells are then grown in a petri dish and fused to cow eggs in which the original genetic material has been removed. The resulting embryos are implanted in surrogate mothers. The resulting offspring, all of one sex, will be identical to one another and carry the same gene...Duke Researchers Develop First Treatment For Rare Muscle Disease
...t the humangene for GAA into a common type of cell grown in the laboratory. These cells actlike a mini-factory, churning out human GAA enzyme. After several years ofexperimentation, Chen and his colleagues obtained enough purified enzyme tobegin tests on laboratory animals. Chen collaborated with ......microorganisms present in the oral cavity can't be grown and weknow nothing about them," says Paster. But the two researchers are poised tochange that. Using the information they have collected from 16S sequencing ofbacteria inhabiting the surface of teeth and gums, Paster and Dewhirst havedesigned...Malthus + 200: Disastrous 'Correction' Looms
...In the intervening 200 years, world population has grown to about 6 billion from around 1 billion in Malthus' time -- despite the many millions lost to famines, plagues and wars. Proportionately more will be lost, now that the stakes are higher, Price fears. "Almost everyone urges measures to avert th...Smithsonian Institution Convenes Experts To Discuss Cocoa's Future
...ng cocoa, which is a rainforest tree traditionally grown under a canopy, provide ecologists with hope," said Thomas Lovejoy, a noted environmentalist and director of the Institute for Conservation Biology at Smithsonian. "The success of traditional cocoa farms may be critical for maintaining biological di...... Stromal cells taken from healthy humandonors were grown in the laboratory, mixed with ceramic particles, thentransplanted under the skin of immune-compromised mice, where they formed acapsule of new bone. The ceramic chips provided structural support for bonegrowth. The result was a replica of normal bo...