Medicinal Leech May Offer Clues To Neural Regeneration
...hley and research assistant Orie Shafer have found that nitric oxide synthase, or NOS, is activated when p... of the Society for Neuroscience. "Our study shows that NOS in the leech is activated at the site of injury within minutes after axons are severed, and it r......ural scientist Nigel Goddard. "The same processing that used to take more than a day on workstations we ca... and his colleagues do "brain-mapping" experiments that produce high- resolution images showing what brain sites are active during different kinds of mental...Impact of Meteorites, Drop in Sea Level Caused Mass Extinctions 65 Million Years Ago
...hers' evidence supporting the controversial theory that the extinction of dinosaurs and many other species was caused by the impact of a huge meteorite that crashed to Earth some 65 million years ago. "The end-Cretaceous extinction is one of the la...Duke's Russian Laser Making Ultraviolet Light And Gamma Rays
...ollidingthe laser beam with the same electron beam that feeds it. Duke's FEL Laboratory is funded by a U....laser lightby perturbing beams of "free" electrons that have been liberatedfrom their normal bondage to atoms. Because electrons that provide the energyof o...Cornell Scientists Find Way To Boost Rice Crop Yield -- They'll Walk On The Wild Side
...maps -- have discovered genes in wild rice species that may help boost production of some of the world's m...ral crops. "We've gone back and found wild species that contain genes that may help us boost production," said Steven D. Tanksley, Cornell's Liberty Hyde Ba......ole model: subterranean Africa's naked mole-rats that can't wait to share newly-discovered food sources... one mole-rat after another took an altruism test that many humans would fail. In various sites in a plastic tunnel maze, the biologists had placed pea-siz...Sea Turtles Have Favorite Oceanic Routes
...f vertebrate marine life. Scientists have learned that the turtles prefer specific ocean routes as if tra...transmitters lasted between three and 87 days, but that was enough time to provide the researchers the first record of the turtles' preferred path. Efforts ...Plants Have Future As Environmental Clean-Up Agents
...cess known asplant-based bioremediation is showing that an answer to thoseproblems could be helped by something as simple as planting a tree. "Essentially, bioremediation is using organisms to clean upcontaminants," said Larry Davis, professor of biochemistry. "Usuallyit means bacteria or fungi-emphasizi...KU Researcher Eyes The Rain Forest Through The Trees
...ENCE, Kans. -- In 1993, Science magazine estimated that 100,000 to 165,000 square kilometers of tropical r... Nicaragua and Costa Rica, there is a real concern that they have overextended themselves in deforestation," she said. Terwilliger believes that if countri......e testsat 24 months. Furthermore, the study found that environment had a greaterimpact on how many words ...'t worry aboutthe child who is not talking much if that child seems to understand whathe or she hears and is asked to do." The children were given a...Bacterial Protein Structure Hints At Mechanism Of A Class Of Premature Aging Diseases
...ist for 20 years, but it wasn't until two yearsago that its structure was revealed by Bastia and White. "T...hich aretwisted in a helical pattern. "RTP ensures that when DNA replicates,it is brought to a neat and accurate finish, and the cell knows that itis time t...Researchers Develop Model Using Birds As Indicator Of Wetlands Health
...ompany under thedirection of UC alumnus Frank Mink that does environmentalassessments. "It's good to have ...the condition of wetlandhabitats. He is continuing that work as a doctoral student in thelab of biology professor Michael Miller. Birds turned out to be a g...Two Long-sought Diabetes Gene Found
...nes one on chromosome 12 and one on chromosome 20 that regulate the activity of other genes. "Both of the...turned out to be "transcription factors," proteins that control how and when other genes are turned on or off. Both were known to be active in regulating ge...Researcher Discovers Key Brain Center For Speech
A key area of the brain that controls the mouth, tongue, larnyx andother intric...d as "dree" or "free." "We may have found an area that in the very least is signficantly relatedto the speech process if not a center for that function," s...No Such Luck: Nitrogen From Air Pollution Unlikely to Moderate Global Warming
... and the use of fertilizers. Scientists had hoped that this extra nitrogen would spur the growth of plants and that the plants, in turn, would absorb some of the extra carbon dioxide in the atmosphere to moderate glo...Optical Microscopy Shines Light On Biology
...unn, assistant professor of chemistry, has reached that goal by improving on near-field optical scanning microscopy, a technique that can be used to look at individual molecules. In instruments that use this process, the object to be...Siblicide In Nature: Study Of Galapagos Seabird Finds Death Can Ensure Species Survival
..."The common view of Darwinian natural selection is that it favors the evolution of parental interest in of... Science Foundation and several journals. "Parents that care for their kids raise the most kids and spread their genes most rapidly. However, in masked boob...Fast Measurement Technique Reveals Early Steps In Protein Folding
...otein apomyoglobin,U. of I. researchers have found that the initial steps of helix formationcan occur with...icroseconds. "Unlike slower spectroscopic methods that are limited in time resolution,our technique can identify events occurring within nanoseconds," said...Florida Company Using ORNL Technology For Revolutionary Wheelchair
...nsists of new algorithms andinnovative engineering that evolved from their work on a DOE project thatfocus...tricwheelchairs, he said. Funding for the research that led to this invention was provided by DOE'sBasic Energy Sciences. ORNL, one of DOE's multiprogram re...Environmental Impact Statements Need To Be Made Easier To Decipher
...vironmental impact statement, according to a study that examinedreading comprehension about a simple proje... sciences atthe University of Illinois. "An agency that fails to produce an EISthat citizens can understand opens itself to lawsuits." To test the understa...