Escapee farmed salmon infiltrate fitter wild populations
...nile salmon. These findings provide support to the claim that hybridisation with farmed escapees may alter the gene pool of wild salmon, reduce its fitness and accelerate its decline."...UF scientists trace origin of shark's electric sense
...ery important finding. But I'm skeptical about the claim the neural crest gives rise to electroreceptors. It still requires a definitive experiment, where the developing neural crest cells are marked with dye, the embryo develops and the dye clearly shows up in the electroreceptors." Dye tests are a classi...Long-term ecological research should include studies on how social science interacts with ecosystems
... published in Science in 1997 in which the authors claim that "most aspects of the structuring and functioning of Earth's ecosystems cannot be understood without accounting for the strong, often dominant influence of humanity." The just-published issue of Society and Natural Resources offers first steps to...Science's Breakthrough of the Year: Watching evolution in action
...ish armor? Studies that follow evolution in action claim top honors as the Breakthrough of the Year, named by Science and its publisher AAAS, the nonprofit science society. In 2005, scientists piled up new insights about evolution at the genetic level and the birth of species, including information that ...Dramatic rise in number of authors publishing in open access journals, independent survey finds
... 18% in the 2004 survey. Altogether 81% of authors claim to have some awareness of open access, up from 66% in 2004. Rowlands and Nicholas found that "Authors strongly believe that, as a result of open access, articles will become more accessible". 75% of authors surveyed agreed with the statement "High pr...Molecular drug pump may help reduce risk of Alzheimer's
... by altering Pgp activity levels. "We would never claim that Pgp activity is the single critical causative factor in Alzheimer's disease, just like there isn't any single cause of heart attacks, hypertension or cancer," says author David Holtzman, M.D., the Andrew B. and Gretchen P. Jones Professor and he...Researchers offer proof-of-concept for Altered Nuclear Transfer
... that this would quell the protests of critics who claim that embryonic stem cell research necessitates the destruction of human life. Scientists and ethicists have debated the merits of this approach, but so far it has not been achieved. "The purpose of our study was to provide a scientific basis for the ...Latest study: Scientists say no evidence exists that therapod dinosaurs evolved into birds
...ures found in China and which some paleontologists claim are the earliest known rudimentary feathers were really feathers at all, a renowned ornithologist says. Instead, the fossilized patterns appear to be bits of decomposed skin and supporting tissues that just happen to resemble feathers to a modest deg...Did feathered dinosaurs exist?
Biologists examining evidence for the claim that birds evolved from dinosaurs have reached some surprising new conclusions. However, they caution that "the problem of avian origins is far from being resolved." Their analysis is published online October 10, 2005 in the Journal of Morphology, pu...Chernobyl: The true scale of the accident
...licized speculations that radiation exposure would claim tens of thousands of lives. But the 4,000 figure is not far different from estimates made in 1986 by Soviet scientists, according to Dr Mikhail Balonov, a radiation expert with the International Atomic Energy Agency in Vienna, who was a scientist in ......st that it is not too late, given that the experts claim that many species are disappearing even before we know about them....Human Y chromosome stays intact while chimp Y loses genes
...lished a landmark paper in Nature challenging that claim by demonstrating how a certain region of the Y chromosome possessed a unique mechanism for repairing mutated genes. Through sequencing the Y, the Page lab and collaborators at Washington University School of Medicine in St. Louis discovered that man...In Iran, camera traps reveal rare Asiatic cheetahs
...s. They vanished in India in 1947; spotty records claim they ranged in Central Asia as far as Kazakhstan from the 1960s through 1980s....Trees, vines and nets microbial evolution changes its face
...ften exchange genes among different species. Their claim has been that the evolution of these organisms is better represented by a net. Unfortunately, no-one knew exactly where to draw the horizontal lines in this net. Victor Kunin, previously a PhD student in Christos Ouzounis's group, and their colleague...Doctors announce lawsuits against major food companies
...t food companies and major dairy trade groups that claim that milk and other dairy products facilitate weight loss. WHO: T. Colin Campbell, Ph.D.: Jacob Gould Schurman Professor Emeritus of Nutritional Biochemistry at Cornell University. He is the nationally recognized director of the China Diet and Heal...'Laser tweezers' reveal microscopic mechanical properties of blood clots
...ue Hopitaux de Paris, and Parke-Davis. The authors claim no conflicts of interest....Geneticists oppose singling out Jewish women in European breast cancer patent
...cial group as a diagnostic target in a gene patent claim and is calling on the EPO to take action to preven... ESHG is calling on the EPO to rescind this patent claim on ethical and practical grounds. At their recent meeting in Prague, the board and members agreed th...Double triumph in stem cell quest
...dult donor. He calls the new cells stembrids. His claim stunned the audience. How, asked stem cell expert Alan Trounson from Monash University in Australia, could he be sure that the stembrids contain only the genetic material of the adult donors? Verlinsky's response was that he fused male adult cells wi...Blocking blood vessels provides new option for large group of advanced lung cancer patients
... will be diagnosed this year, and the disease will claim more than 163,000 lives. Of those, about 85 percent will be non-small cell cancers, and of that group, about 85 percent will fall in the non-squamous category. Patients with brain metastases were also excluded from the study, which account for about ......r higher-order cognitive properties humans like to claim as their own - lies within the prefrontal cortex. In a new study, Jonas Rose and Michael Colombo investigate the neural basis of executive control in homing pigeons by recording from the nidopallium caudolaterale (NCL), a region of the avian brain...