Bacterial Toxin Surprises Scientists
...discovery, the study's findings raise more questions than they answer. But as they continue to study colicin Ia, the researchers hope they will improve general understanding of the critical interactions between proteins and membranes. Please acknowledge partial funding......ticallyengineered mouse to help answer fundamental questions about the mechanismof addictive drugs, Parkinson's...INSERM in Paris. "We are now in theposition to ask questions about what role each of the components play andwhat happens when one crucial component is missing or...Second Breast Cancer Gene Located
...archers will be trying to answer the manyremaining questions about hereditary breast cancers. "Is there a BRCA3?" Futreal asked. "There is a group offamilies that cannot be attributed to either BRCA1 or BRCA2. Now we needto discover whether there is one gene, or a cluster of unrelated mutations,behi...Heat-loving Microbe Repairs Its DNA With Light
... discovery in S.acidocaldarius raises particular questions about what it takes tosurvive in geothermal habitats. For example, are we to infer thatUV radiation is a significant threat to survival in these high-temperature environments?" On one hand, it would seem logical that S. acidocaldarius , likemany org......ees as they did in just 12 hours last January, are questions of bottom-line survival. It can take 20 to 30 years of careful breeding, testing, and evaluation before a variety is ready for release. New grapes that have been bred for the climate are eagerly anticipated. Under the leadership of Bruce Reisch, Pr......or studying learning and memory, which are central questions in neurobiology," he said. "It's interesting to human biology, because song learning in birds has compelling similarities to speech acquisition." The research shows that the score for the bird's song takes shape as it gets relayed down a hierarchy of...NCAR Scientist Models Earth's Climate and Vegetation Patterns At Last Glacial Peak
...y die? The model may eventually shed light on such questions as Jon Bergengren, an NCAR colleague, shifts the model's gaze out of the distant past and into the next century. In the real world, the growth and melt of the ice sheets over the past two million years has resulted from long-term cyclical changes in ......rn, Sloan says. In particular this invasion raises questions about the extent to which other microorganisms are invading the world's ports and estuaries. It is too early to tell what the impact of this introduction will be on the ecosystem, Sloan says, but at the population levels currently found, it is likel...Scientists Identify Retrovirus-Like Components In Corn Genome
...zen says. The group also is trying to answer other questions raised by the findings, such as where the mobile DNA segments come from and how they get into the genome, and how the retrotransposons find their target sites between genes. Bennetzen's group at Purdue worked with Keith J. Edwards of the Long Ashton ...Duke's Russian Laser Making Ultraviolet Light And Gamma Rays
... which other physicistshope will help answer major questions in nuclear physics such as understandingthermonucl...Such energetic gammas could help answer unresolved questions about "themost important reaction in nuclear astrophysics," said Werner Tornow,a Duke physics resear...Bottom-up Ecological Processes Better For Clear Waters, Study Finds
... Brettsaid. Some of the most important unanswered questions in food web ecology stillremain, according to Brett and Goldman. What determines how fast and howmuch energy moves through food webs? How can lakes or oceans with similaralgae production vary so dramatically in fisheries production?...Project Shows Native Bacteria Can Destroy Widespread Pollutant In Groundwater
...Despite the success of the pilot study, there were questions that could only be answered by a full-scale test. There was concern, for example, that the bacterial growth might become thick enough around the injection wells that they would clog up the pores in the aquifer. Several experts also had suggested that...New understanding of crab populations may not bring fishermen's delight
...e explicit environmentalinfluences. Such demanding questions require complicated calculations, butrecent advances in computing power available should give the researchersthe tools to answer them. Their current model takes five days, round-the-clock,of powerful computer time. Higgins and Hastings expect the ma...Bacterium gobbles up chlorinated pollutants
...olutionary origin of Strain 195 is just one of the questions on the research agenda for the Cornell microbiologists....Subtle Biotic Changes Have Big Environmental Impact
...een the atmosphere and the Earth's surface raises questions of global significance, said Carpenter. "To what extent could fertilization of the oceans and alteration of oceanic food webs affect global carbon cycles? In fact, runoff from land is now enriching coastal oceans to unprecedented levels, and i...Evolutionary Advantage Found For Sex
... "Why sex evolved is one of the big unanswered questions of evolutionarybiology," Zeyl says. "This is one of the first examples of finding anevolutionary advantage for sex. "Vertebrates are almost all sexual, and the persistence of sexualreproduction is one of the great mysteries of evolution. Thi...New Gene May Intensify Breast Cancer Growth
...fferent rate" We don't have answersto any of those questions yet, but we are actively seeking the answers," saidTrent. "A lot is known about how steroid receptors work, but the wiring of how theysend their signals has been imperfectly understood. There are a lot of differentgenes which seem to be part of this ...Insulin Resistance Is A Risk Factor For Atherosclerosis In Whites And Hispanics
...t mystery," hesaid. "Science sometimes raises more questions than it can answer." Because of the high correlation the study found between diabetes andinsulin resistance, the research is especially significant to the estimated 16million Americans who have diabetes. Howard said he suspects that ...Largest Tyrannosaur Fossil Unearthed In Montana
...st and labor of the expeditions, which investigate questions in the earth,life, and social sciences. "We are concerned that the fossils be properly excavated and preparedfor placement in the museum for the benefit of the general public," says RogerBergen, president of Earthwatch. Rigby has rec...... support, will address some of the many unanswered questions about dietary supplements and significantly improve our understanding of the role of dietary supplements in health, said Dr. Bernadette M. Marriott, Director of the ODS. Were enthusiastic about the positive reception the Institutes have given the RE...