ScienceDaily: Latest Science News

http://www.sciencedaily.com/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.en-usWed, 06 Jun 2012 13:05:01 EDTWed, 06 Jun 2012 13:05:01 EDT60http://www.sciencedaily.com/images/logosmall.gifhttp://www.sciencedaily.com/news/ For more science articles, visit ScienceDaily.http://www.sciencedaily.com/releases/2012/06/120606113146.htm In just a few decades shrubs in the Arctic tundra have turned into trees as a result of the warming Arctic climate, creating patches of forest which, if replicated across the tundra, would significantly accelerate global warming.Wed, 06 Jun 2012 11:31:31 EDThttp://www.sciencedaily.com/releases/2012/06/120606113146.htmhttp://www.sciencedaily.com/releases/2012/06/120606111801.htm Scientists have carried out a complex analysis in an attempt to determine the "optimal" level of alcohol consumption that is associated with the lowest rates of chronic disease in the UK. They conclude that the intake of about one-half of a typical drink per day would result in the healthiest outcomes, and the authors conclude that the recommended alcohol intake for the UK should be reduced from the current advised level of drinking.Wed, 06 Jun 2012 11:18:18 EDThttp://www.sciencedaily.com/releases/2012/06/120606111801.htmhttp://www.sciencedaily.com/releases/2012/06/120606111759.htm According to some estimates, the average corporate email user sends 112 emails every day. About one out of every seven of those messages, says a new study, can be called gossip.Wed, 06 Jun 2012 11:17:17 EDThttp://www.sciencedaily.com/releases/2012/06/120606111759.htmhttp://www.sciencedaily.com/releases/2012/06/120606102710.htm Gut microbes have a significant effect on nutrient absorption and energy regulation. The composition of microbial communities is shown to vary with age, body weight, and variety of food ingested; as well as in response to bariatric surgery for obesity, use of antibiotics and many other factors. Based on current findings, the authors suggest that therapeutic modification of the gut microbiome may offer an attractive approach to future treatment of nutrition-related maladies, including obesity and a range of serious health consequences linked to under-nutrition.Wed, 06 Jun 2012 10:27:27 EDThttp://www.sciencedaily.com/releases/2012/06/120606102710.htmhttp://www.sciencedaily.com/releases/2012/06/120606102708.htm Researchers have demonstrated that a relatively new microscopy technique can be used to improve our understanding of human tissues and other biomedical materials. The study focused specifically on eye tissues, which are damaged by scarring in diabetic patients.Wed, 06 Jun 2012 10:27:27 EDThttp://www.sciencedaily.com/releases/2012/06/120606102708.htmhttp://www.sciencedaily.com/releases/2012/06/120606102701.htm Researchers in Hong Kong have analyzed the incidence of maritime piracy during the last decade and have developed a way to predict whether or not a particular vessel, with a specific cargo, shipping in a given patch of water is likely to be a target for piracy and what degree of violence might be involved.Wed, 06 Jun 2012 10:27:27 EDThttp://www.sciencedaily.com/releases/2012/06/120606102701.htmhttp://www.sciencedaily.com/releases/2012/06/120606102659.htm Scientists have announced the first complete sequencing of pear genome. Pear (Pyrus spp.) is one of the major and oldest cultivated fruit trees in the temperate regions, which is likely to have originated during the Tertiary period (65-55 million years ago) in southwestern China. It is genetically diverse with more than 5,000 cultivars and accessions present all over the world that could be divided into two major groups, the European or "Occidental" pears and the Asiatic or "Oriental" pears.Wed, 06 Jun 2012 10:26:26 EDThttp://www.sciencedaily.com/releases/2012/06/120606102659.htmhttp://www.sciencedaily.com/releases/2012/06/120606102605.htm Cocaine is one of the most commonly used (and abused) plant-derived drugs in the world, but we have almost no modern information on how plants produce this complex alkaloid. Researchers have just discovered a key reaction in cocaine formation in the coca plant from South America, and identified the responsible enzyme. This enzyme was shown to belong to the aldo-keto-reductase protein family revealing some exciting new insights into the evolution of cocaine biosynthesis. ?Wed, 06 Jun 2012 10:26:26 EDThttp://www.sciencedaily.com/releases/2012/06/120606102605.htmhttp://www.sciencedaily.com/releases/2012/06/120606092719.htm Archaeologists have used airborne laser mapping to unveil archaeological ruins in a Honduran rainforest. An initial analysis of the LiDAR survey has identified ruins that could be those of Ciudad Blanca or other long-hidden sites.Wed, 06 Jun 2012 09:27:27 EDThttp://www.sciencedaily.com/releases/2012/06/120606092719.htmhttp://www.sciencedaily.com/releases/2012/06/120606092717.htm Biomass gasification is being considered as a possible technology for converting at least 10 million acres of Texas brush into biofuel, according to a rangeland ecologist.Wed, 06 Jun 2012 09:27:27 EDThttp://www.sciencedaily.com/releases/2012/06/120606092717.htmhttp://www.sciencedaily.com/releases/2012/06/120606092715.htm A geoengineering solution to climate change could lead to significant rainfall reduction in Europe and North America, a team of European scientists concludes. The researchers studied how models of the Earth in a warm, CO2-rich world respond to an artificial reduction in the amount of sunlight reaching the planet's surface.Wed, 06 Jun 2012 09:27:27 EDThttp://www.sciencedaily.com/releases/2012/06/120606092715.htmhttp://www.sciencedaily.com/releases/2012/06/120606092619.htm Coeliac disease affects millions of people worldwide, but many sufferers are not aware they have the condition or may have been misdiagnosed with other illnesses. A pioneering new test should soon be available in hospitals, offering an accurate, quick, cost-effective diagnosis and monitoring solution.Wed, 06 Jun 2012 09:26:26 EDThttp://www.sciencedaily.com/releases/2012/06/120606092619.htmhttp://www.sciencedaily.com/releases/2012/06/120606092617.htm Swiss researchers have succeeded in generating detailed three-dimensional images of the spatial distribution of amyloid plaques in the brains of mice afflicted with Alzheimer?s disease. These plaques are accumulations of small pieces of protein in the brain and are a typical characteristic of Alzheimer?s. The new technique used in the investigations provides an extremely precise research tool for a better understanding of the disease.Wed, 06 Jun 2012 09:26:26 EDThttp://www.sciencedaily.com/releases/2012/06/120606092617.htmhttp://www.sciencedaily.com/releases/2012/06/120606092615.htm Artificial noses have, until now, been used to detect diseases such as urinary tract infection, Helicobacter pylori, tuberculosis, ear, nose and throat conditions and even lung cancer. They have also been clinically tested for use in continuous monitoring of different disease stages.Wed, 06 Jun 2012 09:26:26 EDThttp://www.sciencedaily.com/releases/2012/06/120606092615.htmhttp://www.sciencedaily.com/releases/2012/06/120606092537.htm New research proposes novel therapeutic targets for treating Huntington?s disease. A new study found the toxic effects of the huntingtin protein on cells may not be driven exclusively by the length of the protein?s expansion, but also by which other proteins are present in the cell.Wed, 06 Jun 2012 09:25:25 EDThttp://www.sciencedaily.com/releases/2012/06/120606092537.htmhttp://www.sciencedaily.com/releases/2012/06/120606092535.htm People who restrict their caloric intake in an effort to live longer have hearts that function more like those in people who are 20 years younger. Researchers have found that a key measure of the heart?s ability to adapt to physical activity, stress and other factors, doesn?t decline nearly as rapidly in people who have significantly restricted their caloric intake.Wed, 06 Jun 2012 09:25:25 EDThttp://www.sciencedaily.com/releases/2012/06/120606092535.htmhttp://www.sciencedaily.com/releases/2012/06/120606075345.htm A 25-year follow-up study reveals that 68% of patients with juvenile myoclonic epilepsy (JME) became seizure-free, with nearly 30% no longer needing antiepileptic drug (AED) treatment.Wed, 06 Jun 2012 07:53:53 EDThttp://www.sciencedaily.com/releases/2012/06/120606075345.htmhttp://www.sciencedaily.com/releases/2012/06/120606075325.htm Scientists have developed a new technique to accurately measure the weight and size of dinosaurs and discovered they are not as heavy as previously thought.Wed, 06 Jun 2012 07:53:53 EDThttp://www.sciencedaily.com/releases/2012/06/120606075325.htmhttp://www.sciencedaily.com/releases/2012/06/120606075323.htm The reconstruction of 27 complete human limb bones found in Atapuerca (Burgos, Spain) has helped to determine the height of various species of the Pleistocene era. Homo heilderbergensis, like Neanderthals, were similar in height to the current population of the Mediterranean.Wed, 06 Jun 2012 07:53:53 EDThttp://www.sciencedaily.com/releases/2012/06/120606075323.htmhttp://www.sciencedaily.com/releases/2012/06/120606075321.htm Scientists have discovered new information about the origin of tumors. The scientists postulate that the initiation of a tumor and the type and aggressivity of the same depend on a specific combination of defects in several processes that safeguard cell integrity, such as DNA repair pathways and cell cycle check-points. The study also demonstrates that mice with a high degree of chromosomal instability and defective programmed cell death (apoptosis), two hallmarks of cancer, rarely develop tumors.Wed, 06 Jun 2012 07:53:53 EDThttp://www.sciencedaily.com/releases/2012/06/120606075321.htmhttp://www.sciencedaily.com/releases/2012/06/120606075319.htm Biogas plants, combined heat and power plants don?t just generate electricity, they also produce heat. However, unlike the electricity they yield, the heat generally dissipates unused. A new technology is set to change this: It will allow the heat to be stored lossfree in the smallest of spaces for lengthy periods of time, for use as and when required.Wed, 06 Jun 2012 07:53:53 EDThttp://www.sciencedaily.com/releases/2012/06/120606075319.htmhttp://www.sciencedaily.com/releases/2012/06/120605175256.htm A new study finds that the ear delivers sound information to the brain in a surprisingly organized fashion.Tue, 05 Jun 2012 17:52:52 EDThttp://www.sciencedaily.com/releases/2012/06/120605175256.htmhttp://www.sciencedaily.com/releases/2012/06/120605172038.htm Research by optometrists supports the continued investigation of optical treatments that attempt to slow the progression of nearsightedness in children. The study compared the effects of wearing and then not wearing no-line bifocals in children with myopia.Tue, 05 Jun 2012 17:20:20 EDThttp://www.sciencedaily.com/releases/2012/06/120605172038.htmhttp://www.sciencedaily.com/releases/2012/06/120605172021.htm In a single year, scientists at The New York Botanical Garden have discovered and described 81 new species of plants and fungi from around the world. Combining work in the field, laboratory research, and painstaking study in plant collections, scientists in 2011 correctly identified the palm species that Vietnamese villagers weave into hats, discovered more than a dozen new lichen species in America's most visited national park, and identified new species in a wide variety of plant families.Tue, 05 Jun 2012 17:20:20 EDThttp://www.sciencedaily.com/releases/2012/06/120605172021.htmhttp://www.sciencedaily.com/releases/2012/06/120605172019.htm Computational drug discovery allows researchers to target a small group of possible molecules for therapeutic use, saving significant time and money. Scientists have now reported on advances in image reconstruction that allow his group to detect the secondary structures of proteins from single particle cryo-electron microscopy.Tue, 05 Jun 2012 17:20:20 EDThttp://www.sciencedaily.com/releases/2012/06/120605172019.htmhttp://www.sciencedaily.com/releases/2012/06/120605172017.htm Among nearly 200,000 individuals, daily use of low-dose aspirin was associated with an increased risk of major gastrointestinal or cerebral bleeding, according to a new study. The authors also found that patients with diabetes had a high rate of major bleeding, irrespective of aspirin use.Tue, 05 Jun 2012 17:20:20 EDThttp://www.sciencedaily.com/releases/2012/06/120605172017.htmhttp://www.sciencedaily.com/releases/2012/06/120605172013.htm Patients with major depression who received telephone-administered cognitive behavioral therapy (T-CBT) had lower rates of discontinuing treatment compared to patients who received face-to-face CBT, and telephone administered treatment was not inferior to face-to-face treatment in terms of improvement in symptoms by the end of treatment; however, at 6-month follow-up, patients receiving face-to-face CBT were less depressed than those receiving telephone administered CBT, according to a new study.Tue, 05 Jun 2012 17:20:20 EDThttp://www.sciencedaily.com/releases/2012/06/120605172013.htmhttp://www.sciencedaily.com/releases/2012/06/120605171347.htm Sierra Nevada Corporation (SNC) Space Systems' Dream Chaser design passed one of its most complex tests to date with a successful captive-carry test conducted near the Rocky Mountain Metropolitan Airport in Jefferson County, Colo., on May 29. Just like the space shuttle before it, SNC's Dream Chaser will go through extensive testing to prove its wings will work. The company built a full-scale flight vehicle of the Dream Chaser spacecraft to carry out the evaluations.Tue, 05 Jun 2012 17:13:13 EDThttp://www.sciencedaily.com/releases/2012/06/120605171347.htmhttp://www.sciencedaily.com/releases/2012/06/120605171010.htm It's the final opportunity of the century to witness the rare astronomical reunion of the sun, Venus and Earth. On Tuesday, June 5 or 6, 2012, depending on your location, Venus will make its presence in the solar system visible from Earth's day side. Using special eye safety precautions, viewers may see Venus as a small dot slowly drifting across the golden disk of the sun.Tue, 05 Jun 2012 17:10:10 EDThttp://www.sciencedaily.com/releases/2012/06/120605171010.htmhttp://www.sciencedaily.com/releases/2012/06/120605155950.htm Current screening strategies for Down syndrome, caused by fetal trisomy 21, and Edwards syndrome, caused by fetal trisomy 18, have false positive rates of 2-3 percent, and false negative rates of 5 percent or higher. Positive screening results must be confirmed by amniocentesis or CVS, carrying a fetal loss rate of approximately 1 in 300 procedures. Now an international, multicenter cohort study finds that a genetic test to screen for trisomy 21 or 18 from a maternal blood sample is almost 100 percent accurate.Tue, 05 Jun 2012 15:59:59 EDThttp://www.sciencedaily.com/releases/2012/06/120605155950.htmhttp://www.sciencedaily.com/releases/2012/06/120605155948.htm US researchers are perfecting simulations that show a nuclear weapon's performance in precise molecular detail, tools that are becoming critical for national defense because international treaties forbid the detonation of nuclear test weapons.Tue, 05 Jun 2012 15:59:59 EDThttp://www.sciencedaily.com/releases/2012/06/120605155948.htmhttp://www.sciencedaily.com/releases/2012/06/120605155944.htm A study in rats suggests that mothers who use marijuana during their teen years -- then stop -- may put their eventual offspring at risk of increased sensitivity to opiates.Tue, 05 Jun 2012 15:59:59 EDThttp://www.sciencedaily.com/releases/2012/06/120605155944.htmhttp://www.sciencedaily.com/releases/2012/06/120605143424.htm During kidney surgery, Firefly fluorescence used with the da Vinci robot lights up in "firefly green" the blood supply to the kidney and helps differentiate cancerous from healthy tissue. More patients can keep the healthy part of their kidney rather than losing the entire organ.Tue, 05 Jun 2012 14:34:34 EDThttp://www.sciencedaily.com/releases/2012/06/120605143424.htmhttp://www.sciencedaily.com/releases/2012/06/120605143421.htm Researchers have for the first time simulated and quantified the early stages of radiation damage that will occur in a given material.Tue, 05 Jun 2012 14:34:34 EDThttp://www.sciencedaily.com/releases/2012/06/120605143421.htmhttp://www.sciencedaily.com/releases/2012/06/120605130752.htm The cities that are most active in preparing for climate change are not necessarily the biggest or wealthiest. Instead, they are often places buffeted by natural disasters and increasing changes in temperature or rainfall.Tue, 05 Jun 2012 13:07:07 EDThttp://www.sciencedaily.com/releases/2012/06/120605130752.htmhttp://www.sciencedaily.com/releases/2012/06/120605130750.htm Researchers have demonstrated that adult fruit flies fed either high-carb or high-protein diets develop metabolic abnormalities, including insulin resistance, which is a hallmark of type 2 human diabetes. Fruit fly D. melanogaster has been used successfully to investigate multiple human diseases. The new study demonstrates that diet profoundly influences fruit fly physiology and health and that insulin-resistant flies provide a new research tool for investigating the molecular mechanisms of insulin resistance.Tue, 05 Jun 2012 13:07:07 EDThttp://www.sciencedaily.com/releases/2012/06/120605130750.htmhttp://www.sciencedaily.com/releases/2012/06/120605130748.htm A natural ingredient found in milk can protect against obesity even as mice continue to enjoy diets that are high in fat. The researchers liken this milk ingredient to a new kind of vitamin.Tue, 05 Jun 2012 13:07:07 EDThttp://www.sciencedaily.com/releases/2012/06/120605130748.htmhttp://www.sciencedaily.com/releases/2012/06/120605121704.htm In an early study, researchers found that the immune cells of patients with amyotrophic lateral sclerosis (ALS), or Lou Gehrig's disease, may play a role in damaging the neurons in the spinal cord. ALS is a disease of the nerve cells in the brain and spinal cord that control voluntary muscle movement.Tue, 05 Jun 2012 12:17:17 EDThttp://www.sciencedaily.com/releases/2012/06/120605121704.htmhttp://www.sciencedaily.com/releases/2012/06/120605121702.htm The transformation of a fertilized egg into a functioning animal requires thousands of cell divisions and intricate rearrangements of those cells. That process is captured with unprecedented speed and precision by a new imaging technology that lets users track each cell in an embryo as it takes shape over hours or days.Tue, 05 Jun 2012 12:17:17 EDThttp://www.sciencedaily.com/releases/2012/06/120605121702.htmhttp://www.sciencedaily.com/releases/2012/06/120605121700.htm Cardiac patients living in high pollution areas were found to be over 40 percent more likely to have a second heart attack when compared to patients living in low pollution areas, according to a new study.Tue, 05 Jun 2012 12:17:17 EDThttp://www.sciencedaily.com/releases/2012/06/120605121700.htmhttp://www.sciencedaily.com/releases/2012/06/120605121658.htm A new meta-analysis reveals patients with type 2 diabetes have a 20 percent increased risk of developing blood cancers.Tue, 05 Jun 2012 12:16:16 EDThttp://www.sciencedaily.com/releases/2012/06/120605121658.htmhttp://www.sciencedaily.com/releases/2012/06/120605121639.htm Halogens particularly chlorine, bromine, and iodine ? have a unique quality which allows them to positively influence the interaction between molecules. This ?halogen bonding? has been employed in the area of materials science for some time, but is only now finding applications in the life sciences.Tue, 05 Jun 2012 12:16:16 EDThttp://www.sciencedaily.com/releases/2012/06/120605121639.htmhttp://www.sciencedaily.com/releases/2012/06/120605113733.htm More than a dozen Gulf Coast bridges in or near Galveston, Texas, would likely suffer severe damage if subjected to a hurricane with a similar landfall as Hurricane Ike but with 30 percent stronger winds, according to researchers.Tue, 05 Jun 2012 11:37:37 EDThttp://www.sciencedaily.com/releases/2012/06/120605113733.htmhttp://www.sciencedaily.com/releases/2012/06/120605113725.htm Sex sells, or at least that is what advertisers hope. A recent study looked at sexual ads appearing in magazines over 30 years and found that the numbers are up.Tue, 05 Jun 2012 11:37:37 EDThttp://www.sciencedaily.com/releases/2012/06/120605113725.htmhttp://www.sciencedaily.com/releases/2012/06/120605113723.htm Wastewater from large dairy farms contains significant concentrations of estrogenic hormones that can persist for months or even years, researchers report in a new study. In the absence of oxygen, the estrogens rapidly convert from one form to another; This stalls their biodegradation and complicates efforts to detect them, the researchers found.Tue, 05 Jun 2012 11:37:37 EDThttp://www.sciencedaily.com/releases/2012/06/120605113723.htmhttp://www.sciencedaily.com/releases/2012/06/120605113719.htm In a discovery that could help in the identification and treatment of anxiety disorders, scientists say the brains of anxious girls work much harder than those of boys.Tue, 05 Jun 2012 11:37:37 EDThttp://www.sciencedaily.com/releases/2012/06/120605113719.htmhttp://www.sciencedaily.com/releases/2012/06/120605113630.htm Two analyses highlight the growing polarization of public attitudes toward climate change, as well as the role ?psychological distance? plays in levels of concern.Tue, 05 Jun 2012 11:36:36 EDThttp://www.sciencedaily.com/releases/2012/06/120605113630.htmhttp://www.sciencedaily.com/releases/2012/06/120605102846.htm To slow resistance of western corn rootworm beetles to genetically protected crops, much larger "refuge" acreages of conventional crops have to be planted, two experts ? including one from the University of Arizona ? warn in a paper published in the Journal of Economic Ecology.Tue, 05 Jun 2012 10:28:28 EDThttp://www.sciencedaily.com/releases/2012/06/120605102846.htmhttp://www.sciencedaily.com/releases/2012/06/120605102844.htm A new study suggests that protein knots, a structure whose formation remains a mystery, may have specific functional advantages that depend on the nature of the protein's architecture.Tue, 05 Jun 2012 10:28:28 EDThttp://www.sciencedaily.com/releases/2012/06/120605102844.htmhttp://www.sciencedaily.com/releases/2012/06/120605102842.htm Researchers have developed a highly sensitive detector of infrared light that can be used in applications ranging from detection of chemical and biochemical weapons from a distance and better airport body scanners to chemical analysis in the laboratory and studying the structure of the universe through new telescopes.Tue, 05 Jun 2012 10:28:28 EDThttp://www.sciencedaily.com/releases/2012/06/120605102842.htmhttp://www.sciencedaily.com/releases/2012/06/120605102807.htm Researchers have just shown how a single atom can be split into its two halves, pulled apart and put back together again. While the word "atom" literally means "indivisible," the laws of quantum mechanics allow dividing atoms -- similarly to light rays -- and reuniting them. The researchers want to build quantum mechanics bridges by letting the atom touch adjacent atoms while it is being pulled apart so that it works like a bridge span between two pillars.Tue, 05 Jun 2012 10:28:28 EDThttp://www.sciencedaily.com/releases/2012/06/120605102807.htmhttp://www.sciencedaily.com/releases/2012/06/120605102803.htm Since the end of the last ice age 21,000 years ago, our planet has seen ocean levels rise by 120 meters to reach their current levels. This increase has not been constant, rather punctuated by rapid accelerations, linked to massive outburst floods from the ice caps. The largest increase, known by paleoclimatologists as 'Melt-Water Pulse?1A', proved to be enigmatic in many respects. A study recently revealed the mysteries of this event, without doubt one of the most important in the last deglaciation.Tue, 05 Jun 2012 10:28:28 EDThttp://www.sciencedaily.com/releases/2012/06/120605102803.htmhttp://www.sciencedaily.com/releases/2012/06/120605102759.htm The projected disappearance of small glaciers worldwide threatens to eliminate the water supply for numerous towns in valleys, such as the Ecuadorian capital Quito, fed by the rivers that flow down from the surrounding mountains. But retreating ice is also a threat to freshwater fauna. According to a new study the local and regional diversity of mountain aquatic fauna will be reduced considerably if predictions are realized.Tue, 05 Jun 2012 10:27:27 EDThttp://www.sciencedaily.com/releases/2012/06/120605102759.htmhttp://www.sciencedaily.com/releases/2012/06/120605102638.htm Each year, approximately 8,000 Americans are bitten by venomous snakes. On average, 800 or so bites occur annually in California, home to an abundance of snake species, but only one family is native and venomous: rattlesnakes. In San Diego County, the number of rattlesnake bites is increasing as well as the toxicity of the attack.Tue, 05 Jun 2012 10:26:26 EDThttp://www.sciencedaily.com/releases/2012/06/120605102638.htmhttp://www.sciencedaily.com/releases/2012/06/120605075535.htm It's estimated that almost 23 percent of women enter pregnancy as smokers and more than half continue to smoke during pregnancy, leading to excess health-care costs at delivery and beyond. In one of the first studies to assess smoking bans and taxes on cigarettes, along with the level of tobacco control spending, researchers have found that state tobacco control policies can be effective in curbing smoking during pregnancy, and in preventing a return to smoking within four months on average, after delivery.Tue, 05 Jun 2012 07:55:55 EDThttp://www.sciencedaily.com/releases/2012/06/120605075535.htmhttp://www.sciencedaily.com/releases/2012/06/120605075533.htm Researchers studying stroke patients have found a strong association between impairments in a network of the brain involved in emotional regulation and the severity of post-stroke depression.Tue, 05 Jun 2012 07:55:55 EDThttp://www.sciencedaily.com/releases/2012/06/120605075533.htmhttp://www.sciencedaily.com/releases/2012/06/120605075203.htm Maximally symmetric systems of particles can spontaneously produce two different patterns, which are mirror images of each other, new research shows. The research group is working towards a mathematical design of self-assembling nanomaterials.Tue, 05 Jun 2012 07:52:52 EDThttp://www.sciencedaily.com/releases/2012/06/120605075203.htmhttp://www.sciencedaily.com/releases/2012/06/120605075201.htm A recent study demonstrates the link between observed fluctuations of atmospheric jet streams and the theoretical concepts that describe why jet streams exist. Atmospheric jet streams are fast-flowing currents of air found approximately 10 km above sea level in the extratropical regions of both hemispheres. Because these jets influence regional weather patterns, there is great interest in understanding the factors that control their path, their strength and variations in both.?Tue, 05 Jun 2012 07:52:52 EDThttp://www.sciencedaily.com/releases/2012/06/120605075201.htmhttp://www.sciencedaily.com/releases/2012/06/120605075159.htm Using transcranial magnetic stimulation (TMS), an international team has succeeded in enhancing the visual abilities of a group of healthy subjects. Following stimulation of an area of the brain?s right hemisphere involved in perceptual awareness and in orienting spatial attention, the subjects appeared more likely to perceive a target appearing on a screen.Tue, 05 Jun 2012 07:51:51 EDThttp://www.sciencedaily.com/releases/2012/06/120605075159.htmhttp://www.sciencedaily.com/releases/2012/06/120604182033.htm Scientists have designed a screening tool that provides a fast, easy and relatively inexpensive way to predict levels of a specific toxin in lakes that are prone to blue-green algal blooms.Mon, 04 Jun 2012 18:20:20 EDThttp://www.sciencedaily.com/releases/2012/06/120604182033.htm

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