MISSOULA – A new article by researchers from the University of Montana, the U.S. Geological Survey and Montana Fish, Wildlife & Parks asserts that climate warming is increasing the hybridization of trout – interbreeding between native and non-native species – in the interior western United States. Clint Muhlfeld, a research assistant professor in the UM Division of Biological Sciences' Flathead Lake Biological Station and research ecologist with the USGS Northern Rocky Mountain Science Center in Glacier National Park, is the lead author of the article, titled "Invasive ...

PITTSBURGH—Spontaneous thoughts, intuitions, dreams and quick impressions. We all have these seemingly random thoughts popping into our minds on a daily basis. The question is what do we make of these unplanned, spur-of-the-moment thoughts? Do we view them as coincidental wanderings of a restless mind, or as revealing meaningful insight into ourselves? A research team from Carnegie Mellon University and Harvard Business School set out to determine how people perceive their own spontaneous thoughts and if those thoughts or intuitions have any influence over judgment. ...

PROVIDENCE, R.I. [Brown University] — The slopes of a giant Martian volcano, once covered in glacial ice, may have been home to one of the most recent habitable environments yet found on the Red Planet, according to new research led by Brown University geologists. Nearly twice as tall as Mount Everest, Arsia Mons is the third tallest volcano on Mars and one of the largest mountains in the solar system. This new analysis of the landforms surrounding Arsia Mons shows that eruptions along the volcano's northwest flank happened at the same time that a glacier covered the ...

Using your brain – particularly during adolescence – may help brain cells survive and could impact how it functions after puberty. According to a recently published study in Frontiers in Neuroscience, Rutgers University behavioral neuroscientist Tracey Shors, who co-authored the study, found that the newborn brain cells in young rats that were successful at learning survived while the same brain cells in animals that didn't master the task died quickly. "In those that didn't learn, three weeks after the new brain cells were made, one-half of them were no longer there," ...

Women with blood in their urine (hematuria) were less than half as likely as men with the same issue to be referred to a urologist for further tests, according to a new Vanderbilt University study. The findings may help explain why women with bladder cancer are often diagnosed at a later stage in the disease and have worse mortality than men. The study, presented by Jeffrey Bassett, M.D., MPH, fellow in Urologic Oncology, and Principal Investigator Daniel Barocas, M.D., MPH, assistant professor of Urologic Surgery, was shared during the American Urological Association ...

Since it started more than 30 years ago, funding the graduate medical education (GME) system has not evolved even as there has been a revolution in GME. The United States contributes almost $10 billion a year from Medicare into funding the GME system. However this system fails to provide the workforce needed for the 21st century and lacks the necessary transparency and accountability. With an aging population and millions of people newly registered for health insurance because of the Affordable Care Act, there is a pressing need to increase the number of primary care ...

Tropical forests are a sometimes-underappreciated asset in the battle against climate change. They cover seven percent of land surface yet hold more than 30 percent of Earth's terrestrial carbon. As abandoned agricultural land in the tropics is taken over by forests, scientists expect these new forests to mop up industrial quantities of atmospheric carbon. New research by Smithsonian scientists shows increasingly abundant vines could hamper this potential and may even cause tropical forests to lose carbon. In the first study to experimentally demonstrate that competition ...

Boulder, Colo., USA – Impact craters reveal one of the most spectacular geologic process known to man. During the past 3.5 billion years, it is estimated that more than 80 bodies, larger than the dinosaur-killing asteroid that struck the Yucatan Peninsula 66 million years ago, have bombarded Earth. However, tectonic processes, weathering, and burial quickly obscure or destroy craters. For example, if Earth weren't so dynamic, its surface would be heavily cratered like the Moon or Mercury. Work by B.C. Johnson and T.J. Bowling predicts that only about four of the craters ...

MEDFORD/SOMERVILLE, Mass. (May 27, 2014) -- Developmental biologists at Tufts University, using a tadpole model, have shown that bioelectrical signals from distant cells control the incidence of tumors arising from cancer-causing genes and that this process is impacted by levels of a common fatty acid produced by bacteria found in the tadpole and also in humans. "Genetic information is often not enough to determine whether a cell will become cancerous; you also have to take into account the physiology of the cell and the bioelectrical signals it receives from other ...

Among older adults at risk of disability, participation in a structured moderate-intensity physical activity program, compared with a health education intervention, significantly reduced the risk of major mobility disability (defined in this trial as loss of ability to walk 400 meters, or about a quarter mile), according to a study published by JAMA. The study is being released early online to coincide with its presentation at the American College of Sports Medicine annual meeting. Mobility—the ability to walk without assistance—is a critical characteristic for functioning ...

With just a daily 20-minute walk, older adults can help stave off major disability and enhance the quality of their later years, according to results of the Lifestyle Interventions and Independence for Elders (LIFE) Study, conducted by researchers at Yale School of Medicine in collaboration with seven other institutions around the country. The study is published in the May 27 issue of the Journal of the American Medical Association. Mobility, the ability to walk without assistance, is key to functioning independently. Reduced mobility is common in older adults and is ...

GAINESVILLE, Fla. — It's something we've all heard for years: Exercise can help keep older adults healthy. But now a study, the first of its kind to look at frail, older adults, proves that physical activity can help these people maintain their mobility and dodge physical disability. A new University of Florida study shows daily moderate physical activity may mean the difference between seniors being able to keep up everyday activities or becoming housebound. In fact, moderate physical activity helped aging adults maintain their ability to walk at a rate 18 percent higher ...

New Rochelle, NY, May 27, 2014—The commonly used food additive monosodium glutamate (MSG) has been linked to obesity and disorders associated with the metabolic syndrome including progressive liver disease. A new study that identifies MSG as a critical factor in the initiation of obesity and shows that a restrictive diet cannot counteract this effect but can slow the progression of related liver disease is published in Journal of Medicinal Food, a peer-reviewed journal from Mary Ann Liebert, Inc.. The paper is available on the Journal of Medicinal Food website. Makoto ...

Researchers have announced the first ever method for controlling the growth of metal-crystals from single atoms. Published in the journal Nature Communications and developed at the University of Warwick, the method, called Nanocrystallometry, allows for the creation of precise components for use in nanotechnology. Professor Peter Sadler from the University's Department of Chemistry commented that "The breakthrough with Nanocrystallometry is that it actually allows us to observe and directly control the nano-world in motion". Using a doped-graphene matrix to slow ...

This news release is available in French. New research presented today by Dr. Jonathan Britt, from McGill University, helps to better understand how reward signals, such as those produced by addictive drugs, travel through the brain and modify brain circuits. Dr. Britt obtained these results using optogenetics, which use light-responsive proteins to study the activation of neural circuits in distinct locations, allowing the researcher to precisely dissect the roles of different neural circuits in the brain. Dr. Britt's studies have helped reveal circuits that are responsible ...

This news release is available in French. Choosing what is best is not always simple. Should one choose a small, certain reward, or take risks and try to get a larger reward? New research by Stan Floresco, from the Brain Research Centre at the University of British Columbia sheds light on the brain circuits that interact to help us decide the best strategy to adopt in changing circumstances. These results were presented at the 8th annual Canadian Neuroscience Meeting, taking place May 25-28 2014 in Montreal, Canada. The studies of Dr. Floresco and his team used ...

Scientists from the University of Southampton, in collaboration with the Universities of Sheffield and Crete, have developed a new hybrid energy transfer system, which mimics the processes responsible for photosynthesis. From photosynthesis to respiration, the processes of light absorption and its transfer into energy represent elementary and essential reactions that occur in any biological living system. This energy transfer is known as Forster Resonance Energy Transfer (FRET), a radiationless transmission of energy that occurs on the nanometer scale from a donor molecule ...

Ordinarily, deaf students are left in the dark when they visit a planetarium. With the lights off, they can't see the ASL interpreter who narrates their tour of outer space. With the lights on, they can't see the constellations of stars projected overhead. That's why a group at Brigham Young University launched the "Signglasses" project. Professor Mike Jones and his students have developed a system to project the sign language narration onto several types of glasses – including Google Glass. The project is personal for Tyler Foulger and a few other student researchers ...

The winds have shifted and the Slide Fire smoke that once hung heavy and gray over Flagstaff is now covering the city of Sedona in Arizona. Over 20,000 acres have burned in the Coconino Forest in Arizona. Inciweb.org reports that during Memorial Day crews completed the final perimeter burnout around the fire. This perimeter created by the fire crews is approximately 40 miles of line to form a containment perimeter around the fire. The fire is considered 35 percent contained at this point. Today (Tuesday May 27) crews will work on holding the containment line along ...

It is currently the dry season in the Democratic Republic of the Congo and the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA's Aqua satellite captured this image on May 24, 2014. MODIS detected hundreds of active fires (location marked in red) in the Democratic Republic of the Congo and northeastern Angola, a sign that the agricultural burning season is underway. Agriculture is responsible for more than half of the products produced by the Democratic Republic of the Congo, and fire is a central feature in agriculture across most of Africa. Places where ...

Irvine, Calif., May 27, 2014 — A discovery by UC Irvine endocrinologists about the importance of cell surface receptors for estrogen has the potential to change how researchers view the hormone's role in normal organ development and function. To date, scientists in the field focused on receptors in the cell's nucleus as the primary site for estrogen's effect on gene activity and organ development and function. There has been acknowledgement of similar estrogen receptors outside of the nucleus but much debate as to whether they are important. To investigate this, Dr. ...

CORVALLIS, Ore. – Researchers at Oregon State University have discovered that some compounds called polyoxoniobates can degrade and decontaminate nerve agents such as the deadly sarin gas, and have other characteristics that may make them ideal for protective suits, masks or other clothing. The use of polyoxoniobates for this purpose had never before been demonstrated, scientists said, and the discovery could have important implications for both military and civilian protection. A United Nations report last year concluded that sarin gas was used in the conflict in Syria. The ...

Economists have long touted the importance of quantifying nature's value — from the natural treatment of pollution by wetlands to the carbon storage capacity of forests — and including it in measures of national wealth. But so far, achieving an actual measurable value for this "natural capital" has remained elusive, says Eli Fenichel, an assistant professor of bioeconomics and ecosystems management at the Yale School of Forestry & Environmental Studies. In a new paper, Fenichel and co-author Joshua Abbott of Arizona State University report developing an approach to ...

The first tropical cyclone of the Eastern Pacific hurricane season grew into a major hurricane as Hurricane Amanda reached Category 4 status on the Saffir-Simpson scale over the Memorial Day holiday weekend. NASA and NOAA satellites watched as Amanda developed an eye while strengthening. Fortunately, Amanda is far enough away from coastal Mexico that no watches or warnings are in effect today, May 27. On Sunday, May 25, Amanda strengthened into the first Major Hurricane in the Eastern Pacific Ocean. Maximum sustained winds were near 155 mph (250 kph). Amanda was centered ...

WASHINGTON, May 27, 2014—The march of modern medicine is often driven by revolutions in medical imaging. When technology advances, doctors are better able to peer deeply into human tissues, and thus able to detect, diagnose and treat human diseases more effectively. Now, researchers have taken an established imaging technology called "optical coherence tomography," or OCT, and integrated it with other instruments to bring about the next revolution in imaging by helping doctors provide safer, less painful and more effective care for women in labor and people with diabetic ...