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Science News for May 30, 2011


A mammoth task -- sorting out mammoth evolution

Researchers found nearly indistinguishable mitochondrial genomes between two species, suggesting possible interbreeding. The study's lead author believes the individual could be a hybrid of both species, challenging traditional views on North American mammoth evolution.

SourceBMC (BioMed Central)·JournalGenome Biology·DateMay 30, 2011

Arrowing in on Alzheimer's disease

Researchers have expanded on existing knowledge of Alzheimer's disease by identifying a novel location within the MS4A gene cluster associated with the condition. The study suggests that the immune system plays a key role in its progression, with several genes implicated in allergies and autoimmune diseases.

SourceBMC (BioMed Central)·JournalGenome Medicine·DateMay 30, 2011
SAMSUNG T9 Portable SSD 2TB

SAMSUNG T9 Portable SSD 2TB transfers large imagery and model outputs quickly between field laptops, lab workstations, and secure archives.

Wikipedia improves students' work

A new study shows that when students write for Wikipedia, they become more diligent in their research and fact-checking. The study found that this is due to the perceived transferability of these skills to other areas of life.

SourceCanadian Federation for the Humanities and Social Sciences·DateMay 30, 2011

Can stress increase the risk of multiple sclerosis?

A recent study published in Neurology found that stress does not increase the risk of developing multiple sclerosis. Researchers studied two groups of nurses and found no significant link between severe stress at home or during childhood and adolescence and the development of MS.

SourceAmerican Academy of Neurology·JournalNeurology·DateMay 30, 2011
Nikon Monarch 5 8x42 Binoculars

Nikon Monarch 5 8x42 Binoculars deliver bright, sharp views for wildlife surveys, eclipse chases, and quick star-field scans at dark sites.

Risk of blood clots in veins hereditary

Researchers mapped hereditary factors for venous thromboembolism in the Swedish population, finding higher risks in children of parents with VTE. Hereditary factors are significant at younger ages and occur equally in men and women, making a parental history an important risk factor to include in medical histories.

SourceLund University·JournalThe Hematologist·DateMay 30, 2011

New malaria protein structure upends theory of how cells grow and move

Scientists have solved the structure of a key malaria parasite protein that controls cell movement, overturning decades-long understanding. The discovery could lead to novel anti-malarial treatments and cancer therapies targeting actin proteins.

SourceWalter and Eliza Hall Institute·JournalProceedings of the National Academy of Sciences·DateMay 30, 2011

Climate played big role in Vikings' disappearance from Greenland

Researchers at Brown University found a significant link between climate change and the Norse settlements' disappearance in Greenland. The Little Ice Age, which began in the 1400s, is believed to have played a major role in their demise.

SourceBrown University·JournalProceedings of the National Academy of Sciences·DateMay 30, 2011
Sony Alpha a7 IV (Body Only)

Sony Alpha a7 IV (Body Only) delivers reliable low-light performance and rugged build for astrophotography, lab documentation, and field expeditions.

History shows that all-boy classrooms might actually benefit girls

New research suggests that same-sex classrooms can have a positive impact on girls' academic performance. However, the study also highlights the challenges and limitations of such arrangements. The study's findings challenge traditional views on single-sex education and provide new insights into its effectiveness.

SourceCanadian Federation for the Humanities and Social Sciences·DateMay 30, 2011

Private weight-loss surgery clinics shedding quality patient care

A new study led by St. Michael's Hospital found that private weight-loss surgery clinics in Canada offer significantly shorter wait times than the public system, with median wait times of only one month compared to 21 months in the public health-care system. However, the quality of patient care may be suffering due to a lack of critica...

SourceSt. Michael's Hospital·JournalCanadian Journal of Surgery·DateMay 30, 2011
Garmin GPSMAP 67i with inReach

Garmin GPSMAP 67i with inReach provides rugged GNSS navigation, satellite messaging, and SOS for backcountry geology and climate field teams.

Mutated muscle protein causes deafness

Researchers at Max Planck Institute for Molecular Genetics discovered a genetic cause of progressive hearing impairment: mutations in the SMPX gene. The disease affects both males and females, although women are usually less severely affected.

SourceMax-Planck-Gesellschaft·JournalAmerican Journal of Human Genetics·DateMay 30, 2011

New Delhi metallo-beta-lactamase-1 enzyme acquired in Canada

A case report reveals NDM-1 enzyme was acquired by a Canadian resident without travel history, highlighting local transmission risk. Enhanced precautions, including isolation and screening procedures, are necessary to contain the outbreak.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·DateMay 30, 2011

Noncoding RNA may promote Alzheimer's disease

Researchers have identified a small noncoding RNA that promotes the production of an alternative splice variant of KCNIP4, leading to neurodegeneration and potential disruption in beta-amyloid processing. Elevated levels of this RNA were found in brain cells from Alzheimer's disease patients.

SourceRockefeller University Press·JournalJournal of Cell Biology·DateMay 30, 2011

'E-waste pollution' a threat to human health, new research suggests

E-waste has been linked to adverse effects on human health, including inflammation and oxidative stress, which can lead to cardiovascular disease and cancer. Researchers found significant increases in inflammatory response and oxidative stress markers in lung epithelial cells exposed to e-waste air samples.

SourceIOP Publishing·JournalEnvironmental Research Letters·DateMay 30, 2011
Creality K1 Max 3D Printer

Creality K1 Max 3D Printer rapidly prototypes brackets, adapters, and fixtures for instruments and classroom demonstrations at large build volume.

Attitudes toward end-of-life care: A survey of cancer patients and others in Korea

A recent Korean survey found that most cancer patients, family members, oncologists, and the general public are receptive to ending futile life-sustaining treatments for terminally ill patients. This positive attitude towards withdrawing such treatments is attributed to patient autonomy and hastening the dying process.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·DateMay 30, 2011