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How much of the United States' newfound bounty of natural gas should stay at home, keeping prices low for domestic customers? How much should be earmarked for export in the form of liquefied natural gas (LNG), at the risk of making natural gas pricier? Those questions are the topic of the cover story in the current edition of Chemical & Engineering News (C&EN), the weekly newsmagazine of the American Chemical Society, the world's largest scientific society. C&EN's Jeff Johnson and Alexander H. Tullo explain in the story that hydraulic fracturing and other technologies ...

Predictability is often used synonymously with "boring," as in that story or that outcome was soooo predictable. For practioners of synthetic biology seeking to engineer valuable new microbes, however, predictability is the brass ring that must be captured. Researchers with the multi-institutional partnership known as BIOFAB have become the first to grab at least a portion of this ring by unveiling a package of public domain DNA sequences and statistical models that greatly increase the reliability and precision by which biological systems can be engineered. The DNA sequences ...

Malala Yousafzai, the teenaged advocate for Pakistani girls' education, was released from the hospital earlier this month. Most of the world's girls don't have to fight as hard as Yousafzai for their education. However, even in countries with high gender equality, sex differences in math and reading scores persisted in the 75 nations examined by a University of Missouri and University of Leeds study. Girls consistently scored higher in reading, while boys got higher scores in math, but these gaps are linked and vary with overall social and economic conditions of the nation. ...

When someone has a stroke, time equals brain. The longer a stroke is left untreated, the more brain tissue is lost. Since the only proven treatment — a clot-busting drug — works in less than half of patients, stroke physicians had high hopes for a mechanical device that could travel through the blocked blood vessel to retrieve or break up the clot, restoring blood flow to the brain. But in a recently completed multi-site trial in which UCLA served as the clinical coordinating center, researchers found there was no overall recovery benefit to patients treated with clot-removal ...

Two innovative programs designed to improve the availability of emerging medical technologies that can help patients receive more effective, efficient and personalized health care are advanced in a commentary written by a team of scientists and policy experts, including seven from Arizona State University, and published today in Science Translational Medicine. The March 13 article, "Regulatory and Reimbursement Innovation," explores the benefits of coverage with evidence development (CED) and parallel review for the regulation and reimbursement of molecular diagnostics. ...

Geneva, 13th March 2013 --- According to WHO, liver cirrhosis accounts for 1.8% (i.e. 170,000) of all deaths in Europe. In recent years liver cirrhosis has become a serious health threat in some Western European countries such as Ireland and the United Kingdom, where over the last 10 years the associated mortality has increased . The European Association for the Study of the Liver (EASL) urges the UK government to press ahead with its proposed implementation of the minimum unit pricing of alcohol. EASL's most recent publication The burden of liver disease in Europe: ...

ANN ARBOR, Mich. – For those with irritable bowel syndrome who wonder if stress aggravates their intestinal disorder, a new University of Michigan Health System study shows it's not all in their head. Researchers revealed that while stress does not cause IBS, it does alter brain-gut interactions and induces the intestinal inflammation that often leads to severe or chronic belly pain, loss of appetite and diarrhea. Stress has a way of suppressing an important component called an inflammasome which is needed to maintain normal gut microbiota, but probiotics reversed ...

Biologists since Aristotle have puzzled over the reasons for mass strandings of whales and dolphins, in which groups of up to several hundred individuals drive themselves up onto a beach, apparently intentionally. Recent genetic research has shed some light on whether family relationships play a role in these enigmatic and often fatal beachings of otherwise healthy whales. One hypothesis regarding the reason for strandings is that "care-giving behavior," mediated largely by family relationships, plays a critical role. In this scenario, the stranding of one or a few whales, ...

MADISON — For the first time, scientists have transplanted neural cells derived from a monkey's skin into its brain and watched the cells develop into several types of mature brain cells, according to the authors of a new study in Cell Reports. After six months, the cells looked entirely normal, and were only detectable because they initially were tagged with a fluorescent protein. Because the cells were derived from adult cells in each monkey's skin, the experiment is a proof-of-principle for the concept of personalized medicine, where treatments are designed for each ...

NEWPORT, Ore. – Pilot whales that have died in mass strandings in New Zealand and Australia included many unrelated individuals at each event, a new study concludes, challenging a popular assumption that whales follow each other onto the beach and to almost certain death because of familial ties. Using genetic samples from individuals in large strandings, scientists have determined that both related and unrelated individuals were scattered along the beaches – and that the bodies of mothers and young calves were often separated by large distances. Results of the study ...

PHILADELPHIA - Brown fat is a hot topic, pardon the pun. Brown fats cells, as opposed to white fat cells, make heat for the body, and are thought to have evolved to help mammals cope with the cold. But, their role in generating warmth might also be applied to coping with obesity and diabetes. The lab of Patrick Seale, PhD, at the Perelman School of Medicine, University of Pennsylvania, studies what proteins guide the development, differentiation, and function of fat cells. Seale and postdoctoral fellow Sona Rajakumari, PhD, along with Jun Wu from the Dana-Farber Cancer ...

Scientists already knew that some social bee species warn their conspecifics when detecting the presence of a predator near their hive, which in turn causes an attack response to the possible predator. Researchers at the University of Tours (France) in collaboration with the Experimental Station of Arid Zones of Almeria (Spain) have now demonstrated that they also use chemical signals to mark those flowers where they have previously been attacked. Researchers at the University of Tours (France) and the Experimental Station of Arid Zones of Almeria (EEZA-CSIC) conducted ...

Mountain View, Calif. – March 14, 2013 – In the largest ever genome-wide association study on myopia, 23andMe, the leading personal genetics company, identified 20 new genetic associations for myopia, or nearsightedness. The company also replicated two known associations in the study, which was specific to individuals of European ancestry. The study included an analysis of genetic data and survey responses from more than 50,000 23andMe customers and demonstrates that the genetic basis of myopia is complex and affected by multiple genes. Myopia is the most common eye ...

A new research technique, pioneered by Dr. Maria Angela Franceschini, will be published in JoVE (Journal of Visualized Experiments) on March 14th. Researchers at Massachusetts General Hospital and Harvard Medical School have developed a non-invasive optical measurement system to monitor neonatal brain activity via cerebral metabolism and blood flow. Of the nearly four million children born in the United States each year, 12% are born preterm, 8% are born with low birth weight, and 1-2% of infants are at risk for death associated with respiratory distress. The result ...

Bangkok, 14 March 2013. CITES plenary today accepted Committee recommendations to list five species of highly traded sharks under the CITES Appendices, along with those for the listing of both manta rays and one species of sawfish. Japan, backed by Gambia and India, unsuccessfully challenged the Committee decision to list the oceanic whitetip shark, while Grenada and China failed in an attempt to reopen debate on listing three hammerhead species. Colombia, Senegal, Mexico and others took the floor to defend Committee decisions to list sharks. "We are thrilled with this ...

BANGKOK -- March 14, 2013 -- The following statement was issued today by WCS President and CEO Cristian Samper: The Wildlife Conservation Society (WCS) today celebrates the decision by an historic, broad group of nations from around the world to list five new sharks, freshwater sawfish, and two manta ray species for protection by the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES). This vote is a first, critical step in working to ensure that international trade does not threaten the survival of commercially valuable shark and ray ...

The European Parliament recently voted to scrap the controversial discards policy, which has seen fishermen throwing thousands of edible fish and fish waste back into the sea because they have exceeded their quotas. Scientists at Plymouth University believe this could have a negative impact on some seabirds, which have become used to following the fishing vessels and are increasingly reliant on their discards. But they say others could return to using foraging as their sole source of food, as long as there are sufficient numbers of fish to meet their needs. Dr Stephen ...

How you get the chameleon of the molecules to settle on a particular "look" has been discovered by RUB chemists led by Professor Dominik Marx. The molecule CH5+ is normally not to be described by a single rigid structure, but is dynamically flexible. By means of computer simulations, the team from the Centre for Theoretical Chemistry showed that CH5+ takes on a particular structure once you attach hydrogen molecules. "In this way, we have taken an important step towards understanding experimental vibrational spectra in the future", says Dominik Marx. The researchers report ...

A project led by scientists from Royal Holloway University in collaboration with Princeton University, has found evidence of how people form into tribe-like communities on social network sites such as Twitter. In a paper published in EPJ Data Science, they found that these communities have a common character, occupation or interest and have developed their own distinctive languages. "This means that by looking at the language someone uses, it is possible to predict which community he or she is likely to belong to, with up to 80% accuracy," said Dr John Bryden from ...

American bullfrogs are native to eastern North America but have been transported by people to many other parts of the globe, and other parts of North America, where they have readily established populations and become an invasive alien menace to native ecosystems. In the largest study of its kind to date, the stomach contents of over 5,000 invasive alien American bullfrogs from 60 lakes and ponds on southern Vancouver Island were examined to identify the native and exotic animals that they had preyed upon. The study was published in the open access journal NeoBiota. Over ...

Philadelphia, PA, March 14, 2013 – Since the 1960s, psychiatrists have been hunting for substances made by the body that might accumulate in abnormally high levels to produce the symptoms associated with schizophrenia. In particular, there was a search for chemicals that might be related to the hallucinogens phencyclidine (PCP) or lysergic acid diethylamide (LSD), which could explain the emergence of psychotic symptoms in schizophrenia. This "auto-intoxication" hypothesis led investigators on a wild goose chase where substances, including the "Pink Spot" and the "Frohman ...

Testing can improve learning among young and old people alike, according to new research from Rice University. The study found that regardless of their age, intelligence or whether they work or attend college, people appear to learn more by taking tests rather than merely rereading or studying information. The research was published in the March 2013 edition of Psychology and Aging. "There is a significant body of research examining the benefits of testing among young students," said Ashley Meyer '09, the study's lead author. Currently a cognitivepsychologist with the ...

Amsterdam, March 14, 2013 - Bumblebees are much more unstable when they hover than when they fly fast, according to new research published this month in the Journal of Theoretical Biology. The authors of the paper, Na Xu and Mao Sun from Beijing University of Aeronautics & Astronautics in China, used a mathematical model to analyze the way bumblebees fly at different speeds, showing that the bumblebee is unstable when it hovers and flies slowly, and becomes neutral or weakly stable at medium and high flight speeds. The instability at hovering and low speed is mainly ...

Smoking significantly increases individuals' risk of developing serious forms of urothelial carcinoma and a higher likelihood of dying from the disease, particularly for women. That is the conclusion of a recent study published in BJU International. While the biological mechanisms underlying this gender difference are unknown, the findings indicate that clinicians and society in general should focus on smoking prevention and cessation to safeguard against deadly cancers of the bladder, ureters, and renal pelvis, especially in females. To evaluate the gender-specific effects ...