ScienceDaily: Latest Science News

Breaking science news and articles on global warming, extrasolar planets, stem cells, bird flu, autism, nanotechnology, dinosaurs, evolution -- the latest discoveries in astronomy, anthropology, biology, chemistry, climate & environment, computers, engineering, health & medicine, math, physics, psychology, technology, and more -- from the world's leading universities and research organizations.
Updated: 40 min 10 sec ago
Gene mutation discovery sparks hope for effective endometriosis screening
Researchers have, for the first time, described the genetic basis of endometriosis, a condition affecting millions of women that is marked by chronic pelvic pain and infertility. The researchers' discovery of a new gene mutation provides hope for new screening methods.
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Patterns in sand dunes explained
In a study of the harsh but beautiful White Sands National Monument in New Mexico, researchers have uncovered a unifying mechanism to explain dune patterns. The new work represents a contribution to basic science, but the findings may also hold implications for identifying when dune landscapes like those in Nebraska's Sand Hills may reach a "tipping point" under climate change, going from valuable grazing land to barren desert.
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Metabolic 'breathalyzer' reveals early signs of disease
The future of disease diagnosis may lie in a “breathalyzer”-like technology currently under development.
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Big jolt to California economy with new tax on cigarettes
A new analysis has found that a state ballot initiative to increase the cigarette tax would create about 12,000 jobs and nearly $2 billion in new economic activity in California.
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Three 'targeted' cancer drugs raise risk of fatal side effects
Treatment with three "targeted" cancer drugs has been linked to a slightly elevated chance of fatal side effects, according to a new analysis. These risks remain low, but they should be factored in when developing patients’ treatment plans.
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Why common tree is toxic to snowshoe hares
Biologists have uncovered why the chemical defenses in birch, a common type of tree found in North America, are toxic to snowshoe hares.
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School Closures Slow Spread of pH1N1
Using high-quality data about the incidence of influenza infections in Alberta during the 2009 H1N1 flu pandemic, the researchers show that when schools closed for the summer, the transmission of infection from person to person was sharply reduced.
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Domestic cats, and wild bobcats and pumas, living in same area have same diseases
Scientists found evidence that domestic cats and wild cats that share the same outdoor areas in urban environments also can share diseases such as Bartonellosis and Toxoplasmosis. Both can be spread from cats to people.
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Clues to common birth defect found in gene expression data
Researchers have uncovered 27 new candidate genes for congenital diaphragmatic hernia, a common and often deadly birth defect. Their sophisticated data-filtering strategy offers a new, efficient and potentially game-changing approach to gene discovery.
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A bug's (sex) life: Diving beetles offer unexpected clues about sexual selection
Studies of diving beetles suggest sperm evolution may be driven by changes in female reproductive organs, challenging the paradigm of post-mating sexual selection being driven mostly by competition among sperm. In the process, the researchers discovered an unexpected and stunning variety of sperm form and behavior.
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Copper + love chemical = big sulfur stink
When a researcher set out to study a chemical in male mouse urine called MTMT that attracts female mice, he didn't think he would stumble into a new field of study. But the research has led scientists to the discovery that it's the copper in our bodies that makes mammals recoil from sulfur chemical smells.
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Fossil cricket reveals Jurassic love song
The love song of an extinct cricket that lived 165 million years ago has been brought back to life by scientists. The song – possibly the most ancient known musical song documented to date – was reconstructed from microscopic wing features on a fossil discovered in North East China. It allows us to listen to one of the sounds that would have been heard by dinosaurs and other creatures roaming Jurassic forests at night.
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NASA's Juno spacecraft refines its path to Jupiter
NASA's solar-powered Juno spacecraft successfully refined its flight path Feb. 1 with the mission's first trajectory correction maneuver. The maneuver is the first of a dozen planned rocket firings that, over the next five years, will keep Juno on course for its rendezvous with Jupiter.
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Medical debt keeps rising, new report shows
A comprehensive new report on health insurance shows the so-called Great Recession caused hundreds of thousands of Californians to lose coverage and acquire medical debt.
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Discovery predicts patient sensitivity to important drug target in deadly brain cancer
A recent discovery enables the prediction of patient sensitivity to proposed drug therapies for glioblastoma – the most common and most aggressive malignant brain tumor in humans.
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More environmental rules needed for shale gas, says geophysicist
In his State of the Union address, President Barack Obama praised the potential of the country's tremendous supply of natural gas buried in shale. But the "Halliburton exclusion" passed by Congress says gas companies don't have to disclose the chemicals used in fracturing fluids. That was a real mistake because it makes the public needlessly paranoid, says a geophysicist.
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PET techniques provide more accurate diagnosis, prognosis in challenging breast cancer cases
Researchers are revealing how molecular imaging can be used to solve mysteries about difficult cases of breast cancer. One recent article focuses on an imaging agent that targets estrogen receptors in estrogen receptor–positive breast cancer patients with formerly inconclusive assessments, and the second highlights a different imaging agent's ability to help predict the prognosis for patients undergoing chemotherapy for a very aggressive type of breast cancer.
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Satellite tracking reveals sea turtle feeding hotspots
Satellite tracking of threatened loggerhead sea turtles has revealed two previously unknown feeding "hotspots" in the Gulf of Mexico that are providing important habitat for at least three separate populations of the turtles.
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Consumers willing to buy sustainable US cotton, researchers find
Researchers have found that United States consumers are more willing to buy clothing made from sustainably grown US cotton than apparel produced using conventional practices in an unknown location.
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It's not solitaire: Brain activity differs when one plays against others
Researchers have found a way to study how our brains assess the behavior -- and likely future actions -- of others during competitive social interactions. Their study is the first to use a computational approach to tease out differing patterns of brain activity during these interactions, the researchers report.
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