ScienceDaily: Latest Science News

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• Adolescent brains biologically wired to engage in risky behavior, study finds
• Body's own proteins may lead the way in global fight against tuberculosis
• Lead in ammunition contaminates game meat
• Vigorous exercise strengthens hip bones in young children
• Robots big and small showcase their skills
• Most kidney dialysis patients not prepared for emergency evacuation, study finds
• Oil spill puts commercially significant cold-water reefs in peril
• Scientists break barrier to creating potential therapeutic molecules
• Making enough red blood cells: Scientists identify molecules that ensure red blood cell production
• Newborn and carrier screening for spinal muscular atrophy now possible, say scientists
• New antenna to aid rural emergency workers developed
• Medicine's secret archives
• Yangtze River’s ancient origins revealed
• Key regulator of fat cell development identified
• Distressed damsels stress coral reefs
• Link established between erectile dysfunction and calcified coronary arteries
• Better way to calculate greenhouse gas value of ecosystems
• New criteria proposed for diagnosing fibromyalgia
• Selenium shows no benefit in prevention of lung cancer, study suggests

Adolescent brains biologically wired to engage in risky behavior, study finds Posted: 06 Jun 2010 02:00 PM PDT There are biological motivations behind the stereotypically poor decisions and risky behavior associated with adolescence, psychologists reveal.

Body's own proteins may lead the way in global fight against tuberculosis Posted: 06 Jun 2010 02:00 PM PDT Scientists hope to counter the re-emerging threat of tuberculosis with help from proteins within our bodies. In new research, scientists show how the protein CCL5 plays a protective role in helping the body ward off TB in early stages of infection. CCL5 is a member of a large family of proteins responsible for immune cell migration toward infection sites.

Lead in ammunition contaminates game meat Posted: 06 Jun 2010 02:00 PM PDT Eating the meat of animals hunted using lead ammunition can be more dangerous for health than was previously thought, especially for children and people who consume large quantities.

Vigorous exercise strengthens hip bones in young children Posted: 06 Jun 2010 02:00 PM PDT Researchers in the UK have presented evidence that vigorous physical activity in young children results in stronger hip bones.

Robots big and small showcase their skills Posted: 06 Jun 2010 02:00 PM PDT Two robotics events were designed to prove the viability of advanced technologies for robotic automation of manufacturing and microrobotics.

Most kidney dialysis patients not prepared for emergency evacuation, study finds Posted: 06 Jun 2010 02:00 PM PDT A survey of kidney dialysis patients finds that most have not taken the emergency preparedness measures that would enable them to survive a hurricane or any other disaster that disrupts power and water services.

Oil spill puts commercially significant cold-water reefs in peril Posted: 06 Jun 2010 08:00 AM PDT Thousands of barrels of oil are leaking out of the Deepwater Horizon site each day. The oil ascends from depths of approximately 1502 m. (4928 ft.), but not all of it reaches the sea surface. The stratified seawater of the Gulf of Mexico captures or slows the ascent of the oil, and the addition of dispersants near the oil source produces tiny droplets that float for a considerable time in the water column and may never reach the surface. According to a group of Florida researchers, the oil that remains in suspension in the water column and creates plumes poses a serious risk for the planktonic and benthic (sea floor) life throughout the region, including the deep-sea reefs they study.

Scientists break barrier to creating potential therapeutic molecules Posted: 06 Jun 2010 08:00 AM PDT Scientists have created a novel technique that for the first time will allow the efficient production of a molecular structure that is common to a vast array of natural molecules. This advance provides a means to explore the potential of this molecular substructure in the search for new therapies.

Making enough red blood cells: Scientists identify molecules that ensure red blood cell production Posted: 06 Jun 2010 08:00 AM PDT Scientists have identified two small RNA molecules which ensure that enough red blood cells are produced efficiently, by fine-tuning a number of different genes involved in this process.

Newborn and carrier screening for spinal muscular atrophy now possible, say scientists Posted: 06 Jun 2010 08:00 AM PDT Scientists studying spinal muscular atrophy have concluded that the technology now exists to carry out nationwide screening of newborn children and pregnant mothers. The study reveals that effective screening may allow parents to find proactive treatments before the symptoms become irreversible.

New antenna to aid rural emergency workers developed Posted: 06 Jun 2010 08:00 AM PDT To overcome the challenges of rural communication, engineers have developed a sturdy lightweight antenna that provides a strong, clear, reliable channel even while moving.

Medicine's secret archives Posted: 06 Jun 2010 08:00 AM PDT Researchers have compiled over 60 examples illustrating how the dissemination of medical knowledge has been impeded. For this purpose, they assessed hundreds of citations. A wide range of interventions was affected: from drugs and vaccines to medical devices such as ultrasound or devices for wound care. The collection reads like the script for a crime series.

Yangtze River’s ancient origins revealed Posted: 06 Jun 2010 02:00 AM PDT The Yangtze River began to cut the Three Gorges area around 45 million years ago, making it much older than previously believed, according to new evidence from minerals.

Key regulator of fat cell development identified Posted: 06 Jun 2010 02:00 AM PDT New research has identified a key regulator of fat cell differentiation that may be a novel target for obesity drugs.

Distressed damsels stress coral reefs Posted: 06 Jun 2010 02:00 AM PDT Damselfish are killing head corals and adding stress to Caribbean coral reefs, which are already in desperately poor condition from global climate change, coral diseases, hurricanes, pollution, and overfishing. Restoring threatened staghorn coral, the damsels' favorite homestead, will take the pressure off the other corals, according to a new study.

Link established between erectile dysfunction and calcified coronary arteries Posted: 06 Jun 2010 02:00 AM PDT In the largest study to date evaluating erectile dysfunction and coronary artery calcification, researchers have determined that men with ED are at a significantly increased risk of high coronary artery calcification scores (CACS), a known predictor of future cardiovascular events.

Better way to calculate greenhouse gas value of ecosystems Posted: 06 Jun 2010 02:00 AM PDT Researchers have developed a new, more accurate method of calculating the change in greenhouse gas emissions that results from changes in land use. The new approach takes into account many factors not included in previous methods, such as the ecosystem's ability to take up or release greenhouse gases over time and all of the greenhouse gases absorbed and released in the process of introducing new crops. The researchers calculated the greenhouse gas value of a variety of ecosystem types.

New criteria proposed for diagnosing fibromyalgia Posted: 06 Jun 2010 02:00 AM PDT The American College of Rheumatology is proposing a new set of diagnostic criteria for fibromyalgia that replaces the tender point test with a rating system that includes common symptoms such as fatigue, sleep disturbances, and cognitive problems, as well as pain.

Selenium shows no benefit in prevention of lung cancer, study suggests Posted: 04 Jun 2010 09:00 PM PDT Selenium, a supplement taken daily by millions in hopes of protection against cancer and a host of other diseases, has proven to be of no benefit in reducing a patient's risk of developing lung cancer -- either a recurrence or second primary malignancy, according to results of an international Phase III clinical trial.

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