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Science News for May 24, 2011


Rethinking extinction risk?

A recent study by an international team of researchers found that the processes of extinction and speciation are linked in plants, with young species often appearing at high risk of extinction. This challenges the application of the same threat criteria across living organisms and regions.

SourcePLOS·JournalPLOS Biology·DateMay 24, 2011

How to learn a star's true age

Researchers have found a method to measure a star's true age using its spin. Astronomer Soren Meibom presented his findings in a press conference, nearly doubling the age covered by previous studies of younger clusters. The technique involves measuring stellar rotation rates for stars in clusters with known ages.

SourceCenter for Astrophysics | Harvard & Smithsonian·JournalThe Astrophysical Journal Letters·DateMay 24, 2011

Pandemic influenza H1N1 in Mexico

Researchers studied pandemic influenza H1N1 morbidity and mortality in 32 Mexican states, finding age distribution and risk of severe disease varied by age group. The study supports the effectiveness of early mitigation efforts like mandatory school closures.

SourcePLOS·JournalPLOS Medicine·DateMay 24, 2011

2 Greenland glaciers lose enough ice to fill Lake Erie

Two of Greenland's largest glaciers have lost sufficient ice to equal 300 gigatons in the last decade, equivalent to seven years of normal snow accumulation. Meanwhile, Helheim glacier gained a small amount of mass over the same period, providing a high-definition picture of climate-caused changes on the island.

SourceOhio State University·JournalGeophysical Research Letters·DateMay 24, 2011

Aboriginal children less likely to receive kidney transplants

A Canadian study found Aboriginal children with kidney failure were less likely to receive a kidney transplant compared to white children. The study revealed that Aboriginal children had more immune-mediated kidney diseases and shorter waiting times on dialysis before transplantation, leading to lower rates of successful transplants.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·DateMay 24, 2011

Seeing an atomic thickness

Researchers from NPL and Linköping University have developed a method to identify graphene thickness using EFM, allowing for precise device applications. This technique is suitable for industrial environments and can be used to distinguish between one- and two-layer graphene.

SourceNational Physical Laboratory·JournalNano Letters·DateMay 24, 2011

Migration an overlooked health policy issue: New series

A new article in PLOS Medicine argues that current policies on migration and health have been conducted within sector silos, hindering coordinated efforts. A framework is proposed to describe migration as a multi-staged process with various intervention opportunities, highlighting points for international coordination.

SourcePLOS·JournalPLOS Medicine·DateMay 24, 2011

California's energy future: Aggressive efficiency and electrification needed to cut emissions

A joint report from Berkeley Lab suggests California can achieve 60% emissions reduction with current technology, while the remaining 20% will require advancements in technologies like artificial photosynthesis and fusion energy. The report recommends electrifying as much as possible, increasing efficiency measures, and changing human ...

PET scans predict effectiveness of treatment for multidrug-resistant tuberculosis in HIV patients

A recent study published in The Journal of Nuclear Medicine found that PET scans can help determine earlier if treatment for tuberculosis is working or if the disease is multidrug-resistant. This technology has the potential to become a valuable clinical adjunct to genotypic and phenotypic tests, improving patient outcomes.

SourceSociety of Nuclear Medicine and Molecular Imaging·JournalJournal of Nuclear Medicine·DateMay 24, 2011

Expanded VLA flexing new scientific muscle

The Expanded VLA is providing new insights into the formation of sun-like stars, with observations revealing previously unseen detail of molecular gas near a very young star. The telescope's improved quality is also helping researchers study large ejections of matter from massive young stars and their role in galaxy evolution.

SourceNational Radio Astronomy Observatory·JournalThe Astrophysical Journal Letters·DateMay 24, 2011

The healing power of hydrogen peroxide

Researchers found that hydrogen peroxide released by damaged skin cells coordinates regeneration of sensory fibers, promoting wound healing and restoring touch sensation. The study demonstrates the healing power of hydrogen peroxide in zebrafish larvae.

SourcePLOS·JournalPLOS Biology·DateMay 24, 2011

Comparable effectiveness shown for 2 common sudden deafness treatments

A large clinical trial has shown that direct injection of steroids into the middle ear is equally effective as oral steroids in restoring hearing levels in patients with sudden deafness. The study results, published in the Journal of the American Medical Association, have implications for treatment options and cost-effectiveness.

MIT: Teaching algae to make fuel

Researchers have developed a method to boost algal hydrogen production by 400% using bioengineered proteins, demonstrating the competition between sugar and hydrogen production in algae. This discovery paves the way for large-scale hydrogen fuel manufacturing using water and sunlight.

SourceMassachusetts Institute of Technology·JournalProceedings of the National Academy of Sciences·DateMay 24, 2011

Nearby supernova factory ramps up

Astronomers have discovered a local supernova factory in the Carina Nebula, which may help understand how young stars release newly-forged elements into their surroundings. The Chandra X-ray Observatory detected over 14,000 stars, six possible neutron stars, and a new population of young massive stars.

SourceChandra X-ray Center·JournalThe Astrophysical Journal Supplement Series·DateMay 24, 2011

Springer launches new open access journal with Korean research society

The new journal will be fully sponsored by the Korea-based Future Technology Research Association International (FTRA) and cover multifaceted aspects of human-centric computing technology and information sciences. All research results will be freely available online under the Creative Commons Attribution license.

SourceSpringer·JournalHuman-centric Computing and Information Sciences·DateMay 24, 2011