Roughly 1 in 4 lesbian or gay teens and 15 percent of bisexual teens are homeless, versus 3 percent of exclusively heterosexual teens, finds a Children's Hospital Boston study of more than 6,300 Massachusetts public high school students. Moreover, among teens who were homeless, those who were gay, lesbian or bisexual (GLB) were consistently more likely than heterosexuals to be on their own, unaccompanied by a parent or guardian. The study, published online July 21 by the American Journal of Public Health, is the first to quantify the risk of homelessness among teens ...

A fungus that lives at extremely high temperatures could help understand structures within our own cells. Scientists at the European Molecular Biology Laboratory (EMBL) and Heidelberg University, both in Heidelberg, Germany, were the first to sequence and analyse the genome of a heat-loving fungus, and used that information to determine the long sought 3-dimensional structure of the inner ring of the nuclear pore. The study was published today in Cell. The fungus Chaetomium thermophilum lives in soil, dung and compost heaps, at temperatures up to 60oC. This means its ...

Building a battery-powered land speed vehicle capable of achieving a speed of 400+ miles per hour requires innovative components, corporate partnerships, hours of diligent preparation and a powerful supercomputer. A team of engineering students at The Ohio State University's (OSU) Center for Automotive Research (CAR) recently began running aerodynamics simulations at the Ohio Supercomputer Center (OSC), one of the first steps in the long and careful process of researching, designing, building and racing the fourth iteration of their record-breaking, alternative-fuel streamliner. ...

On July 10, The Denver Post published two side-by-side op-ed pieces on hydraulic fracturing. One by Dave McCurdy, president and CEO of the American Gas Association, argued that the natural gas extraction process has led to an energy revolution in the U.S., one that reduces the nation's dependence on foreign energy, creates domestic jobs and safely helps the nation meet its diverse and growing energy needs while reducing its carbon footprint. The second piece by Sam Schabacker, a senior organizer for the consumer advocacy organization, Food & Water Watch, paints a different ...

(Santa Barbara, Calif.) –– Scientists at UC Santa Barbara and other institutions say their new research is expected to profoundly affect the field of ecology and can assist the management of ecosystems, including forests, lakes, and oceans. And it's all because of parasites. The research, published this week in the journal Science, includes parasites in a comprehensive study of ecosystems. By doing so, the scientists say they have revealed new ecological rules. "The major finding of our research is that all types of animals –– parasites or otherwise –– appear to follow ...

Operations research models developed by a team at the Georgia Institute of Technology helped CARE International pick three locations worldwide to supply relief quickly to victims of earthquakes, floods, and other natural disasters, according to a paper in a journal of the Institute for Operations Research and the Management Sciences (INFORMS®). "Pre-Positioning of Emergency Items for CARE International" is by Serhan Duran, currently at the Middle East Technical University in Ankara Turkey, and by Marco A. Gutierrez and Pinar Keskinocak of the H. Milton Stewart School ...

COLUMBIA, Mo. ¬— While some members of Congress and others are trying to repeal the healthcare reform law that was passed in 2010, known as the "Patient Protection and Affordable Care Act," medical providers have begun to implement requirements as the law slowly phases in over the next several years. For reform to be successful, one University of Missouri public health expert has determined that professional associations for psychologists and other medical providers need to be at the forefront of the planning stages, and that everyone, including providers and patients, ...

In the wake of the devastating Japanese tsunami, the 2010 Haitian earthquake, and the recent threat of pandemic flu, a new issue of the journal Interfaces: The INFORMS Journal on the Practice of Operations Research is dedicated to improving responses to disasters, health crises, and acute public issues, according to the Institute for Operations Research and the Management Sciences (INFORMS®). The Interfaces special issue on Humanitarian Logistics: Doing Good with Good O.R. is edited by Ozlem Ergun, Pinar Keskinocak, and Julie Swann, the directors of the Georgia Tech ...

A new image and video of major Hurricane Dora were released today from NASA's Goddard Space Flight Center in Greenbelt, Md. Satellites provide a bird's eye view of a hurricane's eye, and NASA noticed Hurricane Dora's eye from several of them. Infrared imagery from NASA's Aqua satellite provided forecasters with a clear view of a cloud-free eye in hurricane Dora as she strengthens near Category 5 status today. Meanwhile the GOES-11 satellite captured a movie of Dora's intensification over the last two days that clearly shows a developing eye. The Atmospheric Infrared ...

ANN ARBOR, Mich.---The results of a study on candidates' use of Twitter in the 2010 midterm elections suggest that Republicans and Tea Party members used the social medium more effectively than their Democratic rivals. The University of Michigan study, among the first to examine the Tea Party's social media strategies, also showed that analyzing Twitter activity can lead to good predictions of election winners. Various social media tools have become a key part of campaign strategies in recent years. In 2010, nearly a quarter of online adults used social networks including ...

COLUMBUS, Ohio – The development of a new cell-culture system that mimics how specific nerve cell fibers in the brain become coated with protective myelin opens up new avenues of research about multiple sclerosis. Initial findings suggest that myelin regulates a key protein involved in sending long-distance signals. Multiple sclerosis (MS) is an autoimmune disease characterized by damage to the myelin sheath surrounding nerve fibers. The cause remains unknown, and it is a chronic illness affecting the central nervous system that has no cure. MS has long been considered ...

Rockville, Md. — Several reports indicate that prolonged viewing of mobile devices and other stereo 3D devices leads to visual discomfort, fatigue and even headaches. According to a new Journal of Vision study, the root cause may be the demand on our eyes to focus on the screen and simultaneously adjust to the distance of the content. Scientifically referred to as vergence-accommodation, this conflict and its effect on viewers of stereo 3D displays are detailed in a recent Journal of Vision article, The Zone of Comfort: Predicting Visual Discomfort with Stereo Displays. ...

Stem cell researchers at UCLA have generated the first genome-wide mapping of a DNA modification called 5-hydroxymethylcytosine (5hmC) in embryonic stem cells, and discovered that it is predominantly found in genes that are turned on, or active. The finding by researchers with the Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research at UCLA may prove to be important in controlling diseases like cancer, where the regulation of certain genes plays a role in disease development. "Any way you can control genes will be hugely important for human ...

Red may mean STOP or I LOVE YOU! A red splash on a toxic butterfly's wing screams DON'T EAT ME! In nature, one toxic butterfly species may mimic the wing pattern of another toxic species in the area. By using the same signal, they send a stronger message: DON'T EAT US! Now several research teams that include Smithsonian scientists in Panama, have discovered that Heliconius butterflies mimic each other's red wing patterns through changes in the same gene. Not only does this gene lead to the same red wing patterns in neighboring species, it also leads to a large variety ...

MINNEAPOLIS / ST. PAUL (July 21, 2011) – A normal but concerning consequence of pregnancy is the fact that pregnant women are more susceptible to infection. University of Minnesota Medical School researchers have identified the underlying mechanisms for this physiologic immune suppression that may lead to new therapies to help ward off infections during pregnancy. In pregnancy, immune system suppressing cells (called regulatory T cells) increase in number to protect the baby from attack by the mother's immune system. Because these cells are busy protecting the developing ...

A genetic study focusing on the Central American river turtle (Dermatemys mawii) recently turned up surprising results for a team of Smithsonian scientists involved in the conservation of this critically endangered species. Small tissue samples collected from 238 wild turtles at 15 different locations across their range in Southern Mexico, Belize and Guatemala revealed a "surprising lack" of genetic structure, the scientists write in a recent paper in the journal Conservation Genetics. The turtles, which are entirely aquatic, represent populations from three different ...

Recent research conducted at Harvard Medical School and the Harvard School of Public Health may have strong implications for informing the controversial debate currently surrounding national health care reform. In a study published in the July edition of the American Journal of Preventive Medicine, the Harvard research team, led by first author Aakanksha Pande, a doctoral student in the Department of Population Medicine at HMS and Harvard Pilgrim Health Care Institute, found that Massachusetts health reform has effectively increased access to health care and reduced disparities. ...

ANN ARBOR, Mich. — Children with public insurance are 22 percent less likely to receive comprehensive primary care than those with private insurance, according to new research from the University of Michigan Medical School. Public insurance programs cover one-third of U.S. children, many of whom belong to the most vulnerable groups, including minorities, the underprivileged and those in poor health. This includes children covered by Medicaid and the Children's Health Insurance Program (CHIP). The study, available online ahead of print in Academic Pediatrics, determined ...

The eye of a tropical cyclone is an indication of a strong storm, and Typhoon Ma-on's eye was apparent in visible and infrared imagery captured by NASA's Aqua satellite. Ma-on just achieved Category Four status on the Saffir-Simpson scale that measures hurricane intensity. The Moderate Resolution Imaging Spectroradiometer (MODIS) instrument that flies aboard NASA's Aqua satellite took an image of Typhoon Ma-on that clearly shows the storm's eye, although it has some high clouds in it. The image was taken at 04:15 UTC (12:15 a.m. EDT) on July 15 as Typhoon Ma-on continues ...

Fires raging in central Africa are generating a high amount of pollution that is showing up in data from NASA's Aura Satellite, with the ominous shape of a dark red butterfly in the skies over southern part of the Democratic Republic of the Congo and northern Angola. An image of the pollution from agricultural fires in central Africa was created from data of nitrogen dioxide (NO2) levels over the period from July 7 to 12, 2011. It was created from Ozone Measuring Instrument (OMI) data using the NASA Giovanni system by Dr. James Acker at NASA's Goddard Space Flight Center ...

BOSTON—Nursing home residents taking certain antidepressant medications are at an increased risk of falling in the days following the start of a new prescription or a dose increase of their current drug, according to a new study by the Institute for Aging Research of Hebrew SeniorLife, an affiliate of Harvard Medical School. Published online in the Journal of Gerontology: Medical Sciences, the study found that nursing home residents have a fivefold increased risk of falling within two days of a new prescription for or an increased dose of a non-SSRI (selective serotonin ...

In a new study with implications for state and federal efforts to reform payments to doctors and hospitals to encourage greater coordination of care, Harvard Medical School researchers found that a global payment system underway in Massachusetts lowered medical spending while improving the quality of patient care relative to the traditional fee-for-service system. The study, published today in the New England Journal of Medicine, examined the Alternative Quality Contract (AQC), which was first introduced by Blue Cross Blue Shield of Massachusetts (BCBSMA) in 2009 and ...

Fairbanks, Alaska—Until now, scientists were uncertain about how much and where in the world terrestrial carbon is being stored. In the July 14 issue of Science Express, scientists report that, between 1990 and 2007, the world's forests stored about 2.4 gigatons of carbon per year. Their results suggest that forests account for nearly all of the world's land-based carbon uptake. Boreal forests are estimated to be responsible for 22 percent of the carbon stored in the forests. A warming climate has the potential to increase fires and insect damage in the boreal forest ...

Fairbanks, Alaska—A scientist at the University of Alaska Fairbanks and colleague at Emory University are seeking to persuade the National Science Foundation to reevaluate its decision to cancel a program that has placed 10,000 science graduate students in more than 6,000 K-12 public schools across the country. In an editorial in the July 15 issue of the journal Science, UAF biology professor Richard Boone and Emory University professor Pat Marsteller advocate for developing an enhanced version of NSF's Graduate Science, Technology, Engineering and Mathematics Fellows ...

Mosquitoes die soon after a blood meal if certain protein components are experimentally disrupted, a team of biochemists at the University of Arizona has discovered. The approach could be used as an additional strategy in the worldwide effort to curb mosquito-borne diseases like dengue fever, yellow fever and malaria. When the researchers blocked a cellular process known as vesicle transport, on which the mosquitoes rely to release digestive enzymes into the gut among other functions, it caused the affected animals to die within two days of blood feeding. "The idea ...