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Science News Archive January 2012 - Page 21


Page 21 of 24

Colorado mountain hail may disappear in a warmer future

A new study suggests that Colorado's Rocky Mountains will experience a near elimination of surface hail by 2070. The warmer climate could lead to more runoff and an increased risk of flash floods. Meanwhile, intense storms may produce more hail inside clouds, but it will melt quickly and fall as rain.

SourceNOAA Headquarters·JournalNature Climate Change·DateJan 8, 2012

Team finds a better way to gauge the climate costs of land use changes

A new study in Nature Climate Change presents a more complete picture of the climate costs of land use changes by incorporating biophysical effects beyond greenhouse gases. The researchers found that tropical rainforests are highly valuable for protecting against climate warming, while boreal forests have lower climate regulation values.

A decade of research proves PET effectively detects dementia

A new review of imaging studies confirms that positron emission tomography (PET) safely and accurately detects dementia, including the most common form among the elderly, Alzheimer's disease. The study found that combining PET with a biomarker called 18F-FDG can pinpoint key areas of metabolic decline in the brain indicating dementia.

SourceSociety of Nuclear Medicine and Molecular Imaging·JournalJournal of Nuclear Medicine·DateJan 6, 2012

Tiny worm points to big promise

Researchers at Northwestern University identified nine core genes that protect cells from protein misfolding, a common cause of over 300 diseases. They also discovered seven classes of small molecules that restore proper protein folding and reduce disease progression.

The nuclear, biological and climate threat - 2011 reviewed

The Bulletin of the Atomic Scientists' special issue reviews 2011's top threats, including Iran's nuclear program, Fukushima's aftermath, and a growing partisan divide in US climate policy. The Doomsday Clock Symposium evaluates the world's progress on biological threats and nuclear disarmament.

SourceSAGE·JournalBulletin of the Atomic Scientists·DateJan 6, 2012

Salk scientists map the frontiers of vision

Researchers at the Salk Institute have produced neuron-by-neuron maps of the mouse brain's visual processing system, laying the groundwork for decoding brain circuitry using genetic research techniques. The study revealed specialized roles for different areas in processing visual information, including direction and fine detail.

SourceSalk Institute·JournalNeuron·DateJan 6, 2012

Prospective surveillance model emerges as standard of care for breast cancer treatment

A prospective surveillance model for breast cancer treatment has been shown to significantly reduce costs and improve outcomes. The model, which involves early identification and intervention of lymphedema-related impairment, has been associated with direct treatment costs of $636.19 per year compared to traditional care at $3,124.92.

SourceAmerican Physical Therapy Association·JournalPhysical Therapy·DateJan 6, 2012

Study finds age-related effects in MS may be reversible

A study published in Cell Stem Cell found that defects in myelin sheath regeneration surrounding nerves can be at least partially corrected following exposure to young immune cells. This suggests that regenerative therapies may work throughout the duration of MS, regardless of age. The findings provide new hope for treating this disease.

SourceJoslin Diabetes Center·JournalCell Stem Cell·DateJan 6, 2012

Mass prostate cancer screening doesn't reduce deaths

New research confirms that annual prostate cancer screening does not reduce deaths from the disease, even among men in their 50s and 60s with underlying health conditions. The study found that six years of aggressive screening led to more diagnoses of tumors but not fewer deaths.

SourceWashU Medicine·JournalJNCI Journal of the National Cancer Institute·DateJan 6, 2012

Researchers find malignancy-risk gene signature for early-stage non-small cell lung cancer

A malignancy-risk gene signature developed for breast cancer has been found to have predictive and prognostic value for patients with early stage non-small cell lung cancer. The signature was able to distinguish between low and high malignancy risk groups, correlating with good or poor overall survival rates.

SourceH. Lee Moffitt Cancer Center & Research Institute·JournalJNCI Journal of the National Cancer Institute·DateJan 6, 2012

Hybrid silkworms spin stronger spider silk

Scientists at the University of Notre Dame have successfully engineered silkworms to produce fibers with the strength and elasticity of spider silk. This breakthrough could lead to the development of new materials for sutures, wound dressings, artificial limbs, and other textiles. The researchers used a transgenic engineering approach ...

SourceUniversity of Notre Dame·JournalProceedings of the National Academy of Sciences·DateJan 6, 2012

Scientists refute Greenpeace claim that genetically modified corn caused new insect pest

The JIPM authors refute Greenpeace's claim that genetically modified corn caused the western bean cutworm to spread. Instead, they cite various ecological and agronomic factors, such as conservation tillage, reduced insecticide use, and climate change, which may have contributed to the WBC's range expansion.

SourceEntomological Society of America·JournalJournal of Integrated Pest Management·DateJan 6, 2012

Dialysis treatments go green

A new study finds that solar-powered hemodialysis can reduce power costs by up to 76.5% and generate effectively free energy. The researchers advocate for implementing water conservation and waste management systems in dialysis programs to further reduce environmental impact.

SourceAmerican Society of Nephrology·JournalClinical Journal of the American Society of Nephrology·DateJan 5, 2012

Whiff of 'love hormone' helps monkeys show a little kindness

Researchers found that oxytocin administration enhanced prosocial choices in rhesus macaques, making them pay attention to each other and choose to give juice to a neighbor. The hormone also increased gaze duration when choosing to reward another monkey, suggesting improved social skills.

SourceDuke University·JournalProceedings of the National Academy of Sciences·DateJan 5, 2012

Dogs read our intent

Researchers used eye-tracking technology to find that dogs are receptive to human communication in a manner similar to young children, responding more to verbal cues and intentions than just words. Dogs' brains show sensitivity to communicative intent through verbal addressing and eye contact.

SourceCell Press·JournalCurrent Biology·DateJan 5, 2012