Culture
The impact fish stocking has on aquatic insects in mountain lakes can be rapidly reversed by removing non-native trout, according to a study completed by U.S. Forest Service and University of California, Davis, scientists.
Their findings appear in a current online issue of the journal Freshwater Biology where they describe experiments that examined some effects of fisheries management practices now in use in California mountain lakes where fish do not naturally occur.
The research has value because the vast majority of mountain lakes in the western United States have been stocked with…
Say goodbye to Italian-Americans and German-Americans and say hello to Vietnamese-Americans, Salvadoran-Americans and a bunch of other hyphenated Americans.
The way people identify themselves in the United States is changing, and the way the federal census classifies them by race or ethnicity isn't painting a clear portrait of America, according to new research.
University of Washington demographers who analyzed 2000 census data contend that because of the way the census was structured many Hispanics or Latinos were eventually lumped into a category called "some other race." So many were…
A new study by researchers at the University of British Columbia suggests taking public transit may help you keep fit.
The study, published in the Journal of Public Health Policy, finds that people who take public transit are three times more likely than those who don't to meet the Heart and Stroke Foundation of Canada's suggested daily minimum of physical activity.
Doctoral student Ugo Lachapelle and Assoc. Prof. Lawrence Frank of the UBC School of Community and Regional Planning used 4,156 travel surveys from metropolitan Atlanta, Georgia, to examine whether transit and car trips were…
Recent commentary has suggested that the extent to which anomaly theories have become ingrained in the minds of academics and popular commentators alike has led to certain common assumptions and misconceptions about Clarke's pattern recognition theory of humour.
"There are two major misconceptions that have arisen," says Clarke. "First there is the assumption that this theory suggests that the deviation from a pattern is rewarded in humour; second there is the idea that the eight patterns identified correspond to categories of jokes or types of comedy in some way, as if there were eight types…
Massoud Amin, University of Minnesota professor of electrical and computer engineering, will speak to members of the U.S. Congressional Research and Development Caucus during a briefing on the U.S. power grid and energy in the nation's capitol today, Thursday, March 26.
The briefing, "Modernizing the Electric Grid: A 'Smart' Way to Use Energy," will be held from noon to 1:30 p.m. today in H-137 Capitol Building. National officials turn to Amin for insight on power grid and energy issues because of his vast experience. Amin is an internationally known expert on power grids, smart grids, smart…
ANN ARBOR, Mich.---University of Michigan ecologists and their colleagues have answered a question that has puzzled biologists for more than a century: What is the main factor that determines a lizard's ability to shed its tail when predators attack?
The answer, in a word: Venom.
Tail-shedding, known to scientists as caudal autotomy, is a common anti-predator defense among lizards. When attacked, many lizards jettison the wriggling appendage and flee. The predator often feasts on the tail while the lucky lizard scurries to safety. Later, the lizard simply grows a new tail.
The ease with which…
CORVALLIS, Ore. – Both plant and human diseases that can travel with the wind have the potential to spread far more rapidly than has been understood, according to a new study, in findings that pose serious concerns not only for some human diseases but also a new fungus that threatens global wheat production.
The research, done by scientists at Oregon State University and other institutions, concluded that invading diseases do not always progress in an orderly, constant rate. These historical studies of both plant and animal diseases show that some pathogens that can be carried through the air…
Washington, DC – The safety of early applications of synthetic biology may be adequately addressed by the existing regulatory framework for biotechnology, especially in contained laboratories and manufacturing facilities. But further advances in this emerging field are likely to create significant challenges for U.S. government oversight, according to a new report authored by Michael Rodemeyer of the University of Virginia. Synthetic biology promises major advances in areas such as biofuels, specialty chemicals, and agriculture and drug products.
In New Life, Old Bottles: Regulating First-…
Washington, DC (March 24, 2009) - In meetings with USDA, FDA, NSF, EPA, the Office of Management and Budget, and the White House Office of Science and Technology Policy last week, key leaders from The American Phytopathological Society (APS) Public Policy Board (PPB) addressed concerns related to human pathogens on plants and noted that significantly more research is needed to ensure national food safety.
"Plant pathologists are well positioned to provide valuable knowledge on these issues, given their unique expertise investigating the complex relationships between microbes and plants,"…
The "are you driving yet?" talk should become part of every pediatrician's regular physical exam for teenagers, Hopkins Children's experts say.
Pediatrician Letitia Dzirasa, M.D., notes that car accidents kill more 15- to -20-year-olds than any disease, so teenage driving should be considered a risky behavior, in need of as much attention as unprotected sex or underage drinking.
"Pediatricians talk to their teen patients about eating disorders, alcohol, marijuana use," Dzirasa says, "but the one conversation that is not happening often enough is about the number-one killer of teenagers:…