ScienceDaily: Latest Science News

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• Martian polygons and deep-sea polygons on Earth: More evidence for ancient Martian oceans?
• Fluoxetine (a.k.a. Prozac) is effective as an anti-viral, study suggests
• Tumor cells' inner workings predict cancer progression
• Scientists use microbes to make 'clean' methane
• Novel therapy may prevent damage to the retina in diabetic eye diseases
• A new Amish community is founded every three-and-a-half weeks in US, experts estimate
• Researchers find link between childhood abuse and age at menarche
• Boys' impulsiveness may result in better math ability
• The longer you're awake, the slower you get
• Laser achieves world record power at one pulse per second
• Nano-FTIR: A new era in modern analytical chemistry
• Computers can predict effects of HIV policies, study suggests
• Bio-inspired nanoantennas for light emission
• 'Diving board' sensors key to DNA detection
• Climate change could open trade opportunities for some vulnerable nations
• Standard radiation therapy dose provides pain relief for painful heel spurs (plantar fasciitis)
• Breakthrough treatment reduces post-surgical scarring for glaucoma patients
• Future of California high-speed rail looks green
• In-utero exposure to magnetic fields associated with increased risk of obesity in childhood
• The Olympics and bare feet: What have we learned?
• Accelerated resolution therapy significantly reduces PTSD symptoms, researchers report
• Turbulences at a standstill
• A novel eye writing device
• Lucid dreamers help scientists locate the seat of meta-consciousness in the brain
• Molecule found that inhibits recovery from stroke
• Shift work linked to increased risk of heart attack and stroke
• World’s greatest plant diversity for the Paleogene: Over a hundred different plant species recorded at the Messel fossil site
• New research method provides better insights into the world of microbes
• Molecular causes for life-threatening fungal infections in case of sepsis unraveled
• Newly discovered scaffold supports turning pain off

Martian polygons and deep-sea polygons on Earth: More evidence for ancient Martian oceans? Posted: 27 Jul 2012 02:19 PM PDT Debate over the origin of large-scale polygons (hundreds of meters to kilometers in diameter) on Mars remains active even after several decades of detailed observations. Similarity in geometric patterns on Mars and Earth has long captured the imagination. Geologists have examined these large-scale polygons and compared them to similar features on Earth's seafloor, which they believe may have formed via similar processes.

Fluoxetine (a.k.a. Prozac) is effective as an anti-viral, study suggests Posted: 27 Jul 2012 02:19 PM PDT Using molecular screening of small molecule libraries, a team of researchers has been able to identify fluoxetine (commonly known as Prozac), a selective serotonin reuptake inhibitor, as a potent inhibitor of coxsackievirus replication.

Tumor cells' inner workings predict cancer progression Posted: 27 Jul 2012 12:40 PM PDT Using a new assay method to study tumor cells, researchers have found evidence of clonal evolution in chronic lymphocytic leukemia (CLL). The assay method distinguishes features of leukemia cells that indicate whether the disease will be aggressive or slow-moving, a key factor in when and how patients are treated.

Scientists use microbes to make 'clean' methane Posted: 27 Jul 2012 11:45 AM PDT Microbes that convert electricity into methane gas could become an important source of renewable energy, according to scientists. Researchers are raising colonies of microorganisms, called methanogens, which have the remarkable ability to turn electrical energy into pure methane -- the key ingredient in natural gas. The scientists' goal is to create large microbial factories that will transform clean electricity from solar, wind or nuclear power into renewable methane fuel and other valuable chemical compounds for industry.

Novel therapy may prevent damage to the retina in diabetic eye diseases Posted: 27 Jul 2012 11:41 AM PDT Targeting a key protein blocks two important pathways related to blood vessel leakage in diabetic retinopathy

A new Amish community is founded every three-and-a-half weeks in US, experts estimate Posted: 27 Jul 2012 10:15 AM PDT A new census of the Amish population in the United States estimates that a new Amish community is founded, on average, about every 3.5 weeks, and shows that more than 60 percent of all existing Amish settlements have been founded since 1990.

Researchers find link between childhood abuse and age at menarche Posted: 27 Jul 2012 09:14 AM PDT Researchers have found an association between childhood physical and sexual abuse and age at menarche.

Boys' impulsiveness may result in better math ability Posted: 27 Jul 2012 08:13 AM PDT In a new study, girls and boys started grade school with different approaches to solving arithmetic problems, with girls favoring a slow and accurate approach and boys a faster but more error prone approach. Girls' approach gave them an early advantage, but by the end of sixth grade boys had surpassed the girls. The study found that boys showed more preference for solving arithmetic problems by reciting an answer from memory, whereas girls were more likely to compute the answer by counting.

The longer you're awake, the slower you get Posted: 27 Jul 2012 08:13 AM PDT Regardless of how tired you perceive yourself to be, lack of sleep can influence the way you perform certain tasks.

Laser achieves world record power at one pulse per second Posted: 27 Jul 2012 08:12 AM PDT The laser system for BELLA, the Berkeley Lab Laser Accelerator, has delivered a petawatt of power -- a quadrillion watts -- in a pulse just 40 femtoseconds long -- a quadrillionth of a second -- at one pulse per second. No other laser system has achieved this peak power at this pulse rate. BELLA's laser should soon be driving electron beams to 10-billion-electron-volt energies in an accelerator just one meter long.

Nano-FTIR: A new era in modern analytical chemistry Posted: 27 Jul 2012 08:12 AM PDT Nanoscience researchers have developed a new instrument that solves a prime question of materials science and nanotechnology: how to chemically identify materials at the nanometer scale.

Computers can predict effects of HIV policies, study suggests Posted: 27 Jul 2012 08:12 AM PDT Policymakers in the fight against HIV/AIDS may have to wait years, even decades, to know whether strategic choices among possible interventions are effective. How can they make informed choices in an age of limited funding? A reliable, well-calibrated, predictive computer simulation could be a great help.

Bio-inspired nanoantennas for light emission Posted: 27 Jul 2012 08:11 AM PDT Just as radio antennas amplify the signals of our mobile phones and televisions, the same principle can apply to light. For the first time, researchers have succeeded in producing a nanoantenna from short strands of DNA, two gold nanoparticles and a small fluorescent molecule that captures and emits light. This work could in the longer term lead to the development of more efficient light-emitting diodes, more compact solar cells or even be used in quantum cryptography.

'Diving board' sensors key to DNA detection Posted: 27 Jul 2012 08:11 AM PDT A tiny vibrating cantilever sensor could soon help doctors and field clinicians quickly detect harmful toxins, bacteria and even indicators of certain types of cancer from small samples of blood or urine. Researchers are in the process of refining a sensor technology that they developed to measure samples at the cellular level into an accurate method for quickly detecting traces of DNA in liquid samples.

Climate change could open trade opportunities for some vulnerable nations Posted: 27 Jul 2012 07:24 AM PDT Unlike many developing nations, Tanzania has the potential to benefit from climate change, according to university researchers and the World Bank. In the future, the African country may be able to both increase maize exports and take advantage of higher commodity prices with trading partners.

Standard radiation therapy dose provides pain relief for painful heel spurs (plantar fasciitis) Posted: 27 Jul 2012 07:24 AM PDT Patients with plantar fasciitis (painful bone heel spur) experience significantly less pain and improved quality of life following a standard dose of external beam radiation therapy, a common cancer treatment similar to receiving an X-ray, according to a randomized, cooperative group study.

Breakthrough treatment reduces post-surgical scarring for glaucoma patients Posted: 27 Jul 2012 07:24 AM PDT Scientists have developed an innovative way to combat post-surgical scarring for glaucoma patients. A clinical trial has shown that the use of a new drug delivery method has resulted in 40 percent fewer injections needed by glaucoma patients to prevent scarring after surgery. This also means fewer hospital visits for these patients in future.

Future of California high-speed rail looks green Posted: 27 Jul 2012 07:24 AM PDT A comprehensive life-cycle assessment by transportation researchers gives the green seal of approval for California's high-speed rail project. The analysis comes on the heels of a state Legislature vote authorizing $8 billion for initial construction, set to begin in 2013, of the high-speed system.

In-utero exposure to magnetic fields associated with increased risk of obesity in childhood Posted: 27 Jul 2012 07:24 AM PDT In-utero exposure to relatively high magnetic field levels was associated with a 69 percent increased risk of being obese or overweight during childhood compared to lower in-utero magnetic field levels, according to a new study.

The Olympics and bare feet: What have we learned? Posted: 27 Jul 2012 07:24 AM PDT A researcher finds that after Ethiopian Olympic runner Abebe Bikila introduced barefoot running to American in 1960, researchers still don't know if it promotes or prevents injuries. She presents a technique to help people ease into it.

Accelerated resolution therapy significantly reduces PTSD symptoms, researchers report Posted: 27 Jul 2012 07:24 AM PDT Brief treatments with an innovative behavioral treatment known as Accelerated Resolution Therapy substantially reduced symptoms associated with post-traumatic stress disorder including, depression, anxiety, sleep dysfunction and other physical and psychological symptoms, reports an initial study.

Turbulences at a standstill Posted: 27 Jul 2012 06:55 AM PDT Energy flowing from large-scale to small-scale places may be prevented from flowing freely in specific conditions. For one theoretical physicists, devising models of chaos and turbulence is his bread and butter. He has found an exception in a model of turbulence, indicating that there are energy flows from large to small scale in confined space.

A novel eye writing device Posted: 27 Jul 2012 06:55 AM PDT A novel device that makes it possible to draw and write using just eye movements has just been developed. People can use it like a pen to write numbers, letters, figures, their signature and even use their eyes to draw using a very simple technique comprising an oculometer and a computer screen. This remarkable feat is based on a visual illusion that enables the eyes to follow smooth and clear trajectories after only several hours of training.

Lucid dreamers help scientists locate the seat of meta-consciousness in the brain Posted: 27 Jul 2012 06:55 AM PDT Studies of lucid dreamers show which centers of the brain become active when we become aware of ourselves in dreams. The human capacity of self-perception, self-reflection and consciousness development are among the unsolved mysteries of neuroscience. Now scientists are shedding new light on this area.

Molecule found that inhibits recovery from stroke Posted: 27 Jul 2012 06:55 AM PDT Researchers have identified a novel molecule in the brain that, after stroke, blocks the formation of new connections between neurons. As a result, it limits the brain's recovery. In a mouse model, the researchers showed that blocking this molecule—called ephrin-A5--induces axonal sprouting, that is, the growth of new connections between the brain's neurons, or cells, and as a result promotes functional recovery.

Shift work linked to increased risk of heart attack and stroke Posted: 27 Jul 2012 05:25 AM PDT Shift work is associated with an increased risk of major vascular problems, such as heart attacks and strokes, concludes a new study.

World’s greatest plant diversity for the Paleogene: Over a hundred different plant species recorded at the Messel fossil site Posted: 27 Jul 2012 05:25 AM PDT Scientists have investigated the extensive collection of fruits and seeds from the Messel pit. They found 140 different plant species, 65 of which were previously unknown. They show that Messel had one of the world's most diverse floras of the Paleogene – the era between about 65 and 23 million years ago.

New research method provides better insights into the world of microbes Posted: 27 Jul 2012 05:25 AM PDT Researchers have developed a research method that will allow scientists to study microbes in more depth than ever before.

Molecular causes for life-threatening fungal infections in case of sepsis unraveled Posted: 27 Jul 2012 05:25 AM PDT With infectious diseases, it is often not the pathogen itself, but rather an excessive inflammatory immune response (= sepsis) that contributes to the patient's death, for instance as a result of organ damage. On intensive care units, sepsis is the second-most common cause of death worldwide. In patients with a severely compromised immune system specially, life-threatening candida fungal infections represent a high risk of sepsis.

Newly discovered scaffold supports turning pain off Posted: 27 Jul 2012 05:24 AM PDT Scientists have discovered a "scaffolding" protein that holds together multiple elements in a complex system responsible for regulating pain, mental illnesses and other complex neurological problems.

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ScienceDaily: Latest Science News

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• NASA X-ray concept inspired from a roll of Scotch® tape
• MRSA cases in academic hospitals double in five years
• Photovoltaics from any semiconductor: Opens door to more widespread solar energy devices
• Efficacy of transcranial magnetic stimulation for depression confirmed in new study
• Yoga may help stroke survivors improve balance
• Do ovaries continue to produce eggs during adulthood?
• Modeling of new enzymes helps develop therapies for cocaine abuse
• Additional benefits of early HIV treatment revealed
• Cell phone financial identity theft
• Big horns trump smooth pickup lines every time
• Decoding the secrets of balance
• First robot that mimics the water striders' jumping abilities
• Alcohol could intensify effects of some drugs in the body
• Solving the mystery of how cigarette smoking weakens bones
• Protective role of skin microbiota described
• Bone marrow transplant eliminates signs of HIV infection
• Climate change linked to ozone loss: May result in more skin cancer
• Biological mechanism for growing massive animal weapons, ornaments discovered
• Entropy can lead to order, paving the route to nanostructures
• World's smallest semiconductor laser created
• Brightest stars don't live alone: Most stellar heavyweights come in interacting pairs, VLT finds
• Prosthetic implant under development
• Engineers are designing, building mechanical ray
• One act of remembering can influence future acts
• Connectomics: Mapping the neural network governing male roundworm mating
• Genetic cause of most lethal brain tumor pinpointed: May lead to new treatment
• Researchers unveil molecular details of how bacteria propagate antibiotic resistance
• Study identifies receptor's role in regulating obesity, type 2 diabetes
• Repetitious, time-intensive magical rituals considered more effective, study shows
• Lower vitamin D could increase risk of dying, especially for frail, older adults
• Men with prostate cancer more likely to die from other causes
• Ion selectivity in neuronal signaling channels evolved twice in animals
• Measurement advance could speed innovation in solar devices
• Students discover methane seep ecosystem
• Diabetes research reveals important link to overcoming 'lazy insulin granules'
• No LOL matter: Tween texting may lead to poor grammar skills
• Hoard of Crusader gold found in ruins
• Toddlers object when people break the rules
• Protein discovery links to cancer research
• Genomic study of Africa's hunter-gatherers elucidates human variation and ancient interbreeding
• New drug could help maintain long-term weight loss
• Whole-genome sequencing of African hunter-gatherers reveals human genetic diversity
• Eye-writing technology: Writing in cursive with your eyes only
• Controlling monkey brains and behavior with light
• Mutation rates in cancer cells strongly linked to how chromatin is organized
• 'Basarab' surname may not indicate direct relation to Vlad the Impaler
• Deadly E. coli strain decoded
• DNA damage in roofers due to PAH exposure, possible cancer link
• Methane measurements at low level flight: Detection of the greenhouse gas methane in the Arctic
• New stroke treatments becoming a reality
• Teamwork against carcinogenic benzene: Three teams of microbial harmful substance eliminators cooperate to destroy benzene
• Genome analysis of brain tumors showing the way to new treatment strategies
• Waste water analysis reveals for the first time real time information regarding drug consumption in 19 European cities
• Actinobacteria as the base of the evolutionary tree
• Molecular mechanism behind deep-sea bacteria's pressure tolerance
• Picture worth a thousand numbers: New data visualization tool helps find the 'unknown unknowns'
• Applying to college? Think before you tweet
• Orientation of far-off multiplanet system has orientation very similar to our own solar system
• Terrorism and the Olympics by-the-numbers
• Unprecedented accuracy in locating brain electrical activity with new device

NASA X-ray concept inspired from a roll of Scotch® tape Posted: 26 Jul 2012 03:03 PM PDT The inspiration behind a NASA scientist's quest to build a highly specialized X-ray mirror using a never-before-tried technique comes from an unusual source: a roll of Scotch® tape.

MRSA cases in academic hospitals double in five years Posted: 26 Jul 2012 03:03 PM PDT Infections caused by methicillin-resistant Staphylococcus aureus (MRSA) doubled at academic medical centers in the US between 2003 and 2008, according to a new report.

Photovoltaics from any semiconductor: Opens door to more widespread solar energy devices Posted: 26 Jul 2012 03:03 PM PDT Researchers have developed a technology that enables low-cost, high efficiency solar cells to be made from virtually any semiconductor material. This opens the door to the use of plentiful, relatively inexpensive semiconductors previously considered unsuitable for photovoltaics.

Efficacy of transcranial magnetic stimulation for depression confirmed in new study Posted: 26 Jul 2012 03:03 PM PDT In one of the first studies to look at transcranial magnetic stimulation (TMS) in real-world clinical practice settings, researchers have confirmed that TMS is an effective treatment for patients with depression who are unable to find symptom relief through antidepressant medications.

Yoga may help stroke survivors improve balance Posted: 26 Jul 2012 03:03 PM PDT Group yoga can help patients' balance improve long after a stroke. Yoga for chronic stroke patients appears to be cost effective and might help them become more active.

Do ovaries continue to produce eggs during adulthood? Posted: 26 Jul 2012 03:02 PM PDT A compelling new genetic study tracing the origins of immature egg cells, or 'oocytes', from the embryonic period throughout adulthood adds new information to a growing controversy. The notion of a "biological clock" in women arises from the fact that oocytes progressively decline in number as females get older, along with a decades-old dogmatic view that oocytes cannot be renewed in mammals after birth.

Modeling of new enzymes helps develop therapies for cocaine abuse Posted: 26 Jul 2012 03:02 PM PDT Researchers have designed and discovered a series of highly efficient enzymes that effectively metabolize cocaine.

Additional benefits of early HIV treatment revealed Posted: 26 Jul 2012 03:02 PM PDT Study results released by the HIV Prevention Trials Network show additional benefits of of early antiretroviral therapy in HIV clinical outcomes.

Cell phone financial identity theft Posted: 26 Jul 2012 03:01 PM PDT While the cell phone is an amazingly useful device, using it for banking — and consumers are increasingly using mobile phones as banking tools — can lead to identity theft and other financial crimes, if reasonable precautions aren't taken.

Big horns trump smooth pickup lines every time Posted: 26 Jul 2012 12:40 PM PDT Elk and rhinoceros beetles aren't diabetic, but to grow big horns and attract mates it appears that the males are insulin-dependent. Biologists have, for the first time ever, showed why horns -- from elk to rhinoceros beetles -- and other decorative, mate-attracting structures are sensitive to changes in nutrition.

Decoding the secrets of balance Posted: 26 Jul 2012 12:39 PM PDT Scientists had previously believed that the brain decoded balance information linearly and therefore actually attempted to reconstruct the time course of velocity and acceleration stimuli. But by combining electrophysiological and computational approaches, scientists have been able to show for the first time that the neurons in the vestibular nuclei in the brain instead decode incoming information nonlinearly as they respond preferentially to unexpected, sudden changes in stimuli.

First robot that mimics the water striders' jumping abilities Posted: 26 Jul 2012 12:39 PM PDT The first bio-inspired microrobot capable of not just walking on water like the water strider -- but continuously jumping up and down like a real water strider -- now is a reality. Scientists have developed the agile microrobot which could use its jumping ability to avoid obstacles on reconnaissance or other missions.

Alcohol could intensify effects of some drugs in the body Posted: 26 Jul 2012 12:39 PM PDT Scientists are reporting another reason -- besides possible liver damage, stomach bleeding and other side effects -- to avoid drinking alcohol while taking certain medicines. Laboratory experiments show that alcohol made several medications up to three times more available to the body, effectively tripling the original dose.

Solving the mystery of how cigarette smoking weakens bones Posted: 26 Jul 2012 12:39 PM PDT Almost 20 years after scientists first identified cigarette smoking as a risk factor for osteoporosis and bone fractures, a new study is shedding light on exactly how cigarette smoke weakens bones. The report concludes that cigarette smoke makes people produce excessive amounts of two proteins that trigger a natural body process that breaks down bone.

Protective role of skin microbiota described Posted: 26 Jul 2012 12:39 PM PDT Scientists have found that bacteria that normally live in the skin may help protect the body from infection. As the largest organ of the body, the skin represents a major site of interaction with microbes in the environment.

Bone marrow transplant eliminates signs of HIV infection Posted: 26 Jul 2012 12:39 PM PDT Two men with longstanding HIV infections no longer have detectable HIV in their blood cells following bone marrow transplants. The virus was easily detected in blood lymphocytes of both men prior to their transplants but became undetectable by eight months post-transplant. The men, who were treated have remained on anti-retroviral therapy.

Climate change linked to ozone loss: May result in more skin cancer Posted: 26 Jul 2012 11:22 AM PDT Scientists are warning that a newly-discovered connection between climate change and depletion of the ozone layer over the US could allow more damaging ultraviolet (UV) radiation to reach Earth's surface, leading to increased incidence of skin cancer.

Biological mechanism for growing massive animal weapons, ornaments discovered Posted: 26 Jul 2012 11:22 AM PDT In the animal kingdom, huge weapons such as elk antlers or ornaments like peacock feathers are sexy. Their extreme size attracts potential mates and warns away lesser rivals. Now scientists have discovered a developmental mechanism they think may be responsible for the excessive growth of threatening horns or come-hither tail feathers.

Entropy can lead to order, paving the route to nanostructures Posted: 26 Jul 2012 11:22 AM PDT Researchers trying to herd tiny particles into useful ordered formations have found an unlikely ally: Entropy, a tendency generally described as "disorder."

World's smallest semiconductor laser created Posted: 26 Jul 2012 11:21 AM PDT Physicists have developed the world's smallest semiconductor laser, a breakthrough for emerging photonic technology with applications from computing to medicine.

Brightest stars don't live alone: Most stellar heavyweights come in interacting pairs, VLT finds Posted: 26 Jul 2012 11:21 AM PDT A study using the European Southern Observatory's Very Large Telescope has shown that most very bright high-mass stars do not live alone. Almost three quarters of them are found to have a close companion star, far more than previously thought. Surprisingly most of these pairs are experiencing disruptive interactions, and about one third are even expected to ultimately merge to form a single star.

Prosthetic implant under development Posted: 26 Jul 2012 11:20 AM PDT Thousands of veterans and warfighters returning to the U.S. suffer with limb amputations, and for many, standard prosthetics are not an option. Skin issues or short remaining-limb length can cause amputees to forgo the typical socket-type attachment systems. Researchers are now offering hope to amputees for a permanent limb replacement.

Engineers are designing, building mechanical ray Posted: 26 Jul 2012 11:20 AM PDT Batoid rays, such as stingrays and manta rays, are among nature's most elegant swimmers. They are fast, highly maneuverable, graceful, energy-efficient, can cruise, bird-like, for long distances in the deep, open ocean, and rest on the sea bottom. Researchers are trying to emulate the seemingly effortless but powerful swimming motions of rays by engineering their own ray-like machine modeled on nature. They are designing an "autonomous underwater vehicle" that someday may surpass what nature has provided as a model. The vehicle has potential commercial and military applications, and could be used for undersea exploration and scientific research.

One act of remembering can influence future acts Posted: 26 Jul 2012 11:20 AM PDT Can the simple act of recognizing a face as you walk down the street change the way we think? Or can taking the time to notice something new on our way to work change what we remember about that walk? Researchers now show that remembering something old or noticing something new can bias how you process subsequent information.

Connectomics: Mapping the neural network governing male roundworm mating Posted: 26 Jul 2012 11:20 AM PDT Scientists have determined the complete wiring diagram for the part of the nervous system controlling mating in the male roundworm Caenorhabditis elegans, an animal model intensively studied by scientists worldwide.

Genetic cause of most lethal brain tumor pinpointed: May lead to new treatment Posted: 26 Jul 2012 11:20 AM PDT Researchers have discovered that some cases of glioblastoma, the most common and aggressive form of primary brain cancer, are caused by the fusion of two adjacent genes. The study also found that drugs that target the protein produced by this genetic aberration can dramatically slow the growth of glioblastomas in mice.

Researchers unveil molecular details of how bacteria propagate antibiotic resistance Posted: 26 Jul 2012 10:52 AM PDT A research team may have found a new way to prevent "superbugs" from genetically propagating drug resistance.

Study identifies receptor's role in regulating obesity, type 2 diabetes Posted: 26 Jul 2012 10:52 AM PDT A recent study demonstrates that the A2b-type adenosine receptor, A2bAR, plays a significant role in the regulation of high fat, high cholesterol diet-induced symptoms of type 2 diabetes.

Repetitious, time-intensive magical rituals considered more effective, study shows Posted: 26 Jul 2012 10:52 AM PDT A new psychology study shows the reasons why people find logic in magical rituals. The findings provide new insight into cognitive reasoning processes -- and how people intuitively make sense out of the unknown.

Lower vitamin D could increase risk of dying, especially for frail, older adults Posted: 26 Jul 2012 10:52 AM PDT A new study concludes that among older adults – especially those who are frail – low levels of vitamin D can mean a much greater risk of death. The randomized, nationally representative study found that older adults with low vitamin D levels had a 30 percent greater risk of death than people who had higher levels.

Men with prostate cancer more likely to die from other causes Posted: 26 Jul 2012 10:52 AM PDT Men diagnosed with prostate cancer are less likely to die from the disease than from largely preventable conditions such as heart disease, according to a new study. It is the largest study to date that looks at causes of death among men with prostate cancer, and suggests that encouraging healthy lifestyle changes should play an important role in prostate cancer management.

Ion selectivity in neuronal signaling channels evolved twice in animals Posted: 26 Jul 2012 10:52 AM PDT Excitation of neurons depends on the selected influx of certain ions through specific channels. Obviously, these channels were crucial for the evolution of nervous systems in animals. Scientists have revealed that voltage-gated sodium channels, which are responsible for neuronal signaling in the nerves of animals, evolved twice in higher and lower animals.

Measurement advance could speed innovation in solar devices Posted: 26 Jul 2012 10:52 AM PDT A novel measurement system can accurately and quickly measures the energy output of solar power devices. Combining two different techniques and suitable for use in both the lab and the production line, their device could be a boon to manufacturers working on better, more competitive solar energy systems.

Students discover methane seep ecosystem Posted: 26 Jul 2012 10:51 AM PDT During a recent oceanographic expedition off San Diego, graduate student researchers discovered convincing evidence of a deep-sea site where methane is likely seeping out of the seafloor, the first such finding off San Diego County.

Diabetes research reveals important link to overcoming 'lazy insulin granules' Posted: 26 Jul 2012 10:51 AM PDT Scientists have made an important discovery on the role of a SNARE protein known as VAMP8 in the release of insulin from the pancreatic islet beta cells. The study will further our understanding of how the body can produce higher levels of insulin in patients with diabetes.

No LOL matter: Tween texting may lead to poor grammar skills Posted: 26 Jul 2012 09:22 AM PDT Text messaging may offer tweens a quick way to send notes to friends and family, but it could lead to declining language and grammar skills, according to researchers.

Hoard of Crusader gold found in ruins Posted: 26 Jul 2012 09:21 AM PDT Archaeologists have uncovered a hoard of real-life buried treasure -- a trove of gold coins at the 13th century Crusader castle of Arsur between the ancient ports of Jaffa and Caesarea.

Toddlers object when people break the rules Posted: 26 Jul 2012 09:21 AM PDT We all know that, in general, it's wrong to kill people, it's inappropriate to wear jeans to bed, and we shouldn't ignore people when they're talking. We know this because we're bonded to others through social norms – but how do we acquire these norms in the first place? A new article delves deeper into understanding this important 'social glue' by examining research on children's enforcement of social norms.

Protein discovery links to cancer research Posted: 26 Jul 2012 09:21 AM PDT New research on how a particular type of protein controls the growth of another protein could advance cancer research.

Genomic study of Africa's hunter-gatherers elucidates human variation and ancient interbreeding Posted: 26 Jul 2012 09:21 AM PDT Geneticists have analyzed the fully sequenced genomes of 15 Africans belonging to three different hunter-gatherer groups and decipher some of what these genetic codes have to say about human diversity and evolution.

New drug could help maintain long-term weight loss Posted: 26 Jul 2012 09:21 AM PDT A new drug could aid in losing weight and keeping it off. The drug increases sensitivity to the hormone leptin, a natural appetite suppressant found in the body. Although so far the new drug has only been tested on mice, the findings have implications for the development of new treatments for obesity in humans.

Whole-genome sequencing of African hunter-gatherers reveals human genetic diversity Posted: 26 Jul 2012 09:21 AM PDT Genome sequences of African hunter-gatherers from three different populations reveal insights into how humans have adapted to distinct environments over evolutionary history. By sequencing whole genomes of individuals within these groups, a team of scientists has substantially expanded knowledge about the scope of genetic diversity in humans.

Eye-writing technology: Writing in cursive with your eyes only Posted: 26 Jul 2012 09:21 AM PDT New technology might allow people who have almost completely lost the ability to move their arms or legs to communicate freely, by using their eyes to write in cursive. The eye-writing technology tricks the neuromuscular machinery into doing something that is usually impossible: to voluntarily produce smooth eye movements in arbitrary directions.

Controlling monkey brains and behavior with light Posted: 26 Jul 2012 09:21 AM PDT Researchers have for the first time shown that they can control the behavior of monkeys by using pulses of blue light to activate particular brain cells. The findings represent a key advance for optogenetics, a state-of-the-art method for making causal connections between brain activity and behavior. The researchers say that similar light-based mind control could likely also be made to work in humans for therapeutic ends.

Mutation rates in cancer cells strongly linked to how chromatin is organized Posted: 26 Jul 2012 09:20 AM PDT Inside our cells, DNA is packed in a dense structure called chromatin so the cell can replicate, repair any DNA damage during cell division, and control which genes are expressed. Researchers have found that chromatin has a lot to do with where mutations occur in the genome in cancer cells.

'Basarab' surname may not indicate direct relation to Vlad the Impaler Posted: 26 Jul 2012 09:11 AM PDT A study by the Genographic Project has shown that not all individuals carrying the Romanian "Basarab" surname, the first dynasty of Wallachian kings that included the real-life Dracula, can be direct biological descendants of the Basarab dynasty.

Deadly E. coli strain decoded Posted: 26 Jul 2012 09:11 AM PDT The secret to the deadly 2011 E. coli outbreak in Germany has now been decoded. The deadliest E. coli outbreak ever was traced to a particularly virulent strain that researchers had never seen in an outbreak before.

DNA damage in roofers due to PAH exposure, possible cancer link Posted: 26 Jul 2012 09:11 AM PDT Roofers have higher PAH blood-levels after a shift than before and that these high levels of PAHs are linked with increased rates of DNA damage, and potentially with higher cancer risk.

Methane measurements at low level flight: Detection of the greenhouse gas methane in the Arctic Posted: 26 Jul 2012 08:30 AM PDT First time measurements of large-scale methane emissions have been taken from the extensive Arctic permafrost landscapes.

New stroke treatments becoming a reality Posted: 26 Jul 2012 08:30 AM PDT Scientists have demonstrated a drug which can dramatically limit the amount of brain damage in stroke patients.

Teamwork against carcinogenic benzene: Three teams of microbial harmful substance eliminators cooperate to destroy benzene Posted: 26 Jul 2012 08:30 AM PDT With modern analytical procedures scientists have succeeded for the first time in tracking the path of the harmful substance Benzene through such a bacterial community with proteins. Accordingly, three teams of microbial harmful substance eliminators cooperate, each with its own tasks.

Genome analysis of brain tumors showing the way to new treatment strategies Posted: 26 Jul 2012 08:30 AM PDT Scientists are systematically investigating the genomes of pediatric brain tumors (medulloblastoma and pylocytic astrocytoma). In their first data evaluation, researchers have now discovered genomic changes which not only reveal targets for new treatment approaches but also provide information about how to use already available drugs more specifically.

Waste water analysis reveals for the first time real time information regarding drug consumption in 19 European cities Posted: 26 Jul 2012 08:29 AM PDT Waste water analysis using urinary biomarkers allows the reliable detection of actual drug consumption in cities. For the first time, a wide group of scientists have carried out a comparative study regarding the consumption of illegal drugs in 19 European cities, four of which are Spanish, based on waste water analysis. In the case of Spain, cannabis and cocaine consumption is higher than that of other drugs such as methamphetamines and ecstasy, appearing in each of the four cities analysed: Barcelona, Castelló de la Plana, Santiago de Compostela and Valencia.

Actinobacteria as the base of the evolutionary tree Posted: 26 Jul 2012 08:27 AM PDT Using comparisons of protein structure, researchers identified Actinobacteria as the base of the evolutionary tree.

Molecular mechanism behind deep-sea bacteria's pressure tolerance Posted: 26 Jul 2012 08:27 AM PDT A Japanese research team has identified a structural change that confers pressure-resistant properties on a particular protein found in bacteria.

Picture worth a thousand numbers: New data visualization tool helps find the 'unknown unknowns' Posted: 26 Jul 2012 08:27 AM PDT Scientists have developed a software tool that enables users to perform in-depth analysis of modeling and simulation data, then visualize the results on-screen. The new data analysis and visualization tool offers improved ease of use compared to similar tools, the researchers say.

Applying to college? Think before you tweet Posted: 26 Jul 2012 08:27 AM PDT Today, 93 percent of teens online use Facebook, and nearly a quarter of college admissions officers use it to help evaluate applicants.

Orientation of far-off multiplanet system has orientation very similar to our own solar system Posted: 26 Jul 2012 08:13 AM PDT Our solar system exhibits a remarkably orderly configuration: The eight planets orbit the sun much like runners on a track, circling in their respective lanes and always keeping within the same sprawling plane. In contrast, most exoplanets discovered in recent years -- particularly the giants known as "hot Jupiters" -- inhabit far more eccentric orbits. Now researchers have detected the first exoplanetary system, 10,000 light years away, with regularly aligned orbits similar to those in our solar system. At the center of this faraway system is Kepler-30, a star as bright and massive as the sun.

Terrorism and the Olympics by-the-numbers Posted: 26 Jul 2012 07:30 AM PDT History offers a warning, but no clear pattern on the true risk of terrorism at the Olympic Games, concludes a new report. The Olympics have been terror targets on three separate occasions since 1970, claiming 22 lives and wounding more than 100, the report says.

Unprecedented accuracy in locating brain electrical activity with new device Posted: 26 Jul 2012 07:27 AM PDT Researchers have developed the world's first device designed for mapping the human brain that combines whole-head magnetoencephalography (MEG) and magnetic resonance imaging (MRI) technology. MEG measures the electrical function and MRI visualizes the structure of the brain. The merging of these two technologies will produce unprecedented accuracy in locating brain electrical activity non-invasively.

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