Researchers at the University of Bergen in Norway have found new support for their theory that cannabis use causes a temporary cognitive breakdown in non-psychotic individuals, leading to long-term psychosis. In an fMRI study published this week in Frontiers in Psychiatry, researchers found a different brain activity pattern in schizophrenia patients with previous cannabis use than in schizophrenic patients without prior cannabis use. The results reinforce the researchers' model where cannabis users suffering from schizophrenia actually may have higher cognitive abilities ...

To this end, the researchers developed a new method for entangling single photons which gyrate in opposite directions. This result is a first step towards entangling and twisting even macroscopic, spatially separated objects in two different directions. The researchers at the Vienna Center for Quantum Science and Technology (VCQ), situated at the University of Vienna, and the Institute for Quantum Optics and Quantum Information (IQOQI) at the Austrian Academy of Sciences have were able to get their pioneering results published in the current issue of the renowned scientific ...

During presidential campaigns, it's not unusual to hear candidates from both parties say they will focus on strengthening the nation's economy. But how well have presidents delivered on that promise once in the White House? On a newly-released report card that grades presidents on their economic performance, Franklin D. Roosevelt, Warren G. Harding and Rutherford B. Hayes are at the top of the class, while Chester Arthur, Herbert Hoover and Martin Van Buren receive failing grades. The first-of-its-kind study by the Georgia Institute of Technology analyzed up to 220 ...

A person doesn't have to go far to find a polycyclic aromatic hydrocarbon (PAH). These carcinogen precursors are inhaled through automobiles exhaust during the morning commute, are present in a drag of cigarette smoke, and are part of any barbequed meal. Once ingested or inhaled, these big, bulky multi-ringed molecules are converted into reactive carcinogenic compounds that can bind to DNA, sometimes literally bending the double helix out of its normal shape, to form areas of damage called lesions. The damaged DNA can create errors in the genetic code during replication, ...

WASHINGTON--With its strong dependence on gas-turbine engines for propulsion, the U.S. Navy is always looking for ways to improve the fuel consumption of these engines. At the Naval Research Laboratory (NRL), scientists are studying the complex physics of Rotating Detonation Engines (RDEs) which offer the potential for high dollar savings by way of reduced fuel consumption in gas-turbine engines, explains Dr. Kazhikathra Kailasanath, who heads NRL's Laboratories for Computational Physics and Fluid Dynamics. Many Navy aircraft use gas-turbine engines for propulsion, with ...

Some 4.567 billion years ago, our solar system's planets spawned from an expansive disc of gas and dust rotating around the sun. While similar processes are witnessed in younger solar systems throughout the Milky Way, the formative stages of our own solar system were believed to have taken twice as long to occur. Now, new research lead by the Centre for Star and Planet Formation at the Natural History Museum of Denmark, University of Copenhagen, suggests otherwise. Indeed, our solar system is not quite as special as once believed. Using improved methods of analysis of ...

Do costly seawalls provide a false sense of security in efforts to control nature? Would it be better to focus on far less expensive warning systems and improved evacuation procedures that can save many lives? Seth Stein, a Northwestern University geologist, has teamed up with his father, Jerome Stein, an economist at Brown University, to develop new strategies to defend society against natural disasters like Hurricane Sandy as well as the effects of climate change. The approach, which considers costs and benefits while looking for the best solution, is based on a ...

Boulder, CO, USA – In the evolutionary long run, small critters tend to evolve into bigger beasts -- at least according to the idea attributed to paleontologist Edward Cope, now known as Cope's Rule. Using the latest advanced statistical modeling methods, a new test of this rule as it applies dinosaurs shows that Cope was right -- sometimes. "For a long time, dinosaurs were thought to be the example of Cope's Rule," says Gene Hunt, curator in the Department of Paleobiology at the National Museum of Natural History (NMNH) in Washington, D.C. Other groups, particularly ...

WASHINGTON – Compared to a survey conducted nearly 20 years ago, about twice the proportion of addiction counselors now find it acceptable for at least some of their patients to have a drink occasionally – either as an intermediate goal or as their final treatment goal, according to a new study published by the American Psychological Association. The researchers surveyed 913 members of the National Association of Alcoholism and Drug Addiction Counselors from across the United States. About 50 percent of the respondents said it would be acceptable if some of their clients ...

CHAMPAIGN, lll. — Liberals and conservatives who are polarized on certain politically charged subjects become more moderate when reading political arguments in a difficult-to-read font, researchers report in a new study. Likewise, people with induced bias for or against a defendant in a mock trial are less likely to act on that bias if they have to struggle to read the evidence against him. The new research, reported in the Journal of Experimental Social Psychology, is one of two studies to show that subtle manipulations that affect how people take in information can ...

CHAMPAIGN, lll. — Partisans beware! Some of your most cherished political attitudes may be malleable! Researchers report that simply answering three "why" questions on an innocuous topic leads people to be more moderate in their views on an otherwise polarizing political issue. The research, described in the journal Social Psychological and Personality Science, explored attitudes toward what some people refer to as the ground zero mosque, an Islamic community center and mosque built two blocks from the site of the former World Trade Center in New York City. When the Islamic ...

NEW YORK (Nov. 1, 2012) -- Weill Cornell Medical College researchers report that mass spectrometry, a tool currently used to detect and measure proteins and lipids, can also now allow biologists to "see" for the first time exactly how drugs work inside living cells to kill infectious microbes. As a result, scientists may be able to improve existing antibiotics and design new, smarter ones to fight deadly infections, such as tuberculosis. The new study was published in today's early online edition of Science. "The development of antibiotics has been stalled for several ...

Boulder, CO, USA – Sea levels are rising faster than expected from global warming, and University of Colorado geologist Bill Hay has a good idea why. The last official IPCC report in 2007 projected a global sea level rise between 0.2 and 0.5 meters by the year 2100. But current sea-level rise measurements meet or exceed the high end of that range and suggest a rise of one meter or more by the end of the century. "What's missing from the models used to forecast sea-level rise are critical feedbacks that speed everything up," says Hay. He will be presenting some of these ...

Contact: Arne Mooers, 778.782.3979, amooers@sfu.ca Carol Thorbes, PAMR, 778.782.3035, cthorbes@sfu.ca END ...

There's new hope in the fight against Huntington's disease. A group of researchers that includes scientists from the U.S. Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) have designed a compound that suppresses symptoms of the devastating disease in mice. The compound is a synthetic antioxidant that targets mitochondria, an organelle within cells that serves as a cell's power plant. Oxidative damage to mitochondria is implicated in many neurodegenerative diseases including Alzheimer's, Parkinson's, and Huntington's. The scientists administered ...

We humans organize ourselves in myriad kinds of social groups, from scout troops and sports teams to networks of friends, colleagues, or classmates. But how do these social groups work? How do we decide whom to trust and whom to follow? And how do we deal with people that don't seem to fit the norms of our social groups? New research published in Psychological Science, a journal of the Association for Psychological Science, explores these issues by examining various facets of social perception and behavior. The Herding Hormone: Oxytocin Stimulates In-Group Conformity Mirre ...

Contact: Iman Hajirasouliha, 778.782.7040, 604.418.4834 (cell), imanh@sfu.ca Carol Thorbes, PAMR, 778.782.3035, cthorbes@sfu.ca Flickr: http://at.sfu.ca/skirFz END ...

(SACRAMENTO, Calif.) — A team of UC Davis investigators has discovered a protein on the surface of lung cancer cells that could prove to be an important new target for anti-cancer therapy. A series of experiments in mice with lung cancer showed that specific targeting of the protein with monoclonal antibodies reduced the size of tumors, lowered the occurrence of metastases and substantially lengthened survival time. The findings will be published in the November issue of Cancer Research. "Lung cancer continues to be one of the biggest killers in the United States, and ...

Negatively framed political attitudes ("I don't like Obama") are stronger than positively framed attitudes ("I like Romney"), and this effect is strengthened when people think more deeply about the issues involved. That is the finding of a paper published in the latest issue of the British Journal of Social Psychology by George Bizer, a psychology professor at Union College in Schenectady, N.Y. Bizer and his co-authors Iris Žeželj (University of Belgrade) and Jamie Luguri (Yale University) presented participants with information about two fictional (though ostensibly ...

In one of the largest studies of its kind ever conducted, an international team of scientists has thrown new light on the genetic basis of the inflammatory bowel diseases (IBD). Crohn's disease and ulcerative colitis, the two most common forms of IBD, are chronic inflammatory digestive disorders affecting 230,000 Canadians. Dr. John Rioux, researcher at the Montreal Heart Institute and Associate Professor of Medicine at the Université de Montréal, is one of the researchers who have identified 71 genetic regions newly associated with inflammatory bowel disease (IBD), increasing ...

Adding an angiogenesis inhibitor to treatment with a HER2-inhibiting drug could improve outcomes for patients with HER2-positive breast cancer who develop brain metastases. In their report published online in PNAS Plus, Massachusetts General Hospital (MGH) investigators report the first preclinical study combining antiangiogenic and anti-HER2 drugs in an animal model of brain metastatic breast cancer. "We have shown dramatic improvement in survival by slowing the growth of brain metastatic, HER2-amplified breast cancer," says Rakesh Jain, PhD, director of the Steele ...

PHILADELPHIA - Arterial stiffening has long been considered a major risk factor for cardiovascular disease. Keeping arteries soft and supple might reduce disease risk, but the mechanisms of how arteries stave off hardening has remained elusive. Researchers from the Perelman School of Medicine, University of Pennsylvania, Wistar Institute, and The Children's Hospital of Philadelphia have discovered that the protein apolipoprotein E (apoE) plays a major role in maintaining arterial softness by suppressing production of the extracellular matrix, a network of connective ...

AMES, Iowa – The human body has more than a trillion cells, most of them connected, cell to neighboring cells. How, exactly, do those bonds work? What happens when a pulling force is applied to those bonds? How long before they break? Does a better understanding of all those bonds and their responses to force have implications for fighting disease? Sanjeevi Sivasankar, an Iowa State assistant professor of physics and astronomy and an associate of the U.S. Department of Energy's Ames Laboratory, is leading a research team that's answering those questions as it studies ...

NASA's Tropical Rainfall Measuring Mission, or TRMM, satellite acts as a rain gauge in space as it orbits the Earth's tropics. As TRMM flew over Hurricane Sandy since its birth on Oct. 21 it was gathering data that has now been mapped to show how much rain the storm dropped along the U.S. eastern seaboard. Much of the recent deadly flooding along the northeastern United States coastlines was caused by super storm Sandy's storm swell. Strong winds from Sandy persistently pushed Atlantic Ocean waters toward the coast. High tides that occurred at the same time also magnified ...

Wind shear is pushing the bulk of Tropical Storm Rosa southeast of the storm's center, and that's evident on infrared imagery from NASA's Aqua satellite. Meanwhile System 99E, that was trailing behind Rosa on Oct. 31, has now "given up the ghost" as a result of that same wind shear. When NASA's Aqua satellite flew over Tropical Storm Rosa at 5:41 a.m. EDT (0951 UTC) on Nov. 1, 2012 the Atmospheric Infrared Sounder (AIRS) instrument took an infrared picture of Tropical Storm Rosa and remnants of System 99E. The AIRS data showed the strongest convection (rising air that ...