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Science News Archive February 2011 - Page 8


Page 8 of 25

Look after your brain

Swedish scientist Laura Fratiglioni's research shows that active mental, physical, and social activities can preserve cognitive functions and lower the risk of developing dementia. Factors such as blood pressure, weight, and genetics also play a role in determining an individual's risk.

Failure to tackle UK's alcohol problem could see many thousands of extra liver deaths than in other European countries

The UK's failure to address its alcohol problem could result in a significant increase in liver deaths, with the country facing a projected 77,000 excess deaths over 20 years if it doesn't adopt effective policies. The authors argue that increasing alcohol quality and limiting availability of cheap products can help reduce death rates.

SourceThe Lancet_DELETED·JournalThe Lancet·DateFeb 20, 2011

Mimicking photosynthesis path to solar-derived hydrogen fuel

A Penn State materials chemist has developed an artificial system that mimics photosynthesis to produce solar-derived hydrogen fuel. However, the process remains inefficient and expensive due to recombination of electrons and limited lifetime of the system. The researcher aims to improve efficiency by modeling energy pathways and adjus...

Turning to nature for inspiration

Researchers at Northwestern University are developing artificial hair cell sensors that mimic nature's ability to sense vibrations and movement. These biologically inspired sensors have the potential to improve medical device performance, enhance robotic capabilities, and create new consumer goods.

Fountain of youth from the tap

Researchers found a correlation between lithium levels in tap water and lower mortality rates in Japanese municipalities. In experiments with the roundworm Caenorhabditis elegans, lithium treatment led to increased longevity. The findings suggest that low-dose lithium may have life-prolonging effects in humans.

SourceFriedrich-Schiller-Universitaet Jena·JournalEuropean Journal of Nutrition·DateFeb 18, 2011

Universal flu vaccine study yields success in mice

A new study has successfully trialed a synthetic universal flu vaccine in mice, providing 100% protection against the H3N2 strain and 20% against the highly pathogenic bird flu. The vaccine uses peptides that trigger an immune response to a region of the flu virus present in all influenza A and B viruses.

SourceUniversity of Adelaide·JournalJournal of General Virology·DateFeb 18, 2011

Bad news/good news

A study by Eric Lambin predicts the world may run out of productive agricultural land by 2050 due to rising global demand and land degradation. However, some developing countries have increased their forest cover while enhancing food production through innovation, sound policy, and good governance.

SourceStanford University·JournalProceedings of the National Academy of Sciences·DateFeb 18, 2011

Juggling languages can build better brains

Research suggests that bilingual speakers outperform monolinguals in certain mental abilities, such as editing out irrelevant information and prioritizing tasks. This 'mental juggling' skill allows bilinguals to better navigate between languages and enhances their cognitive flexibility.

1 person of 1,900 met AHA's definition of ideal heart health, says University of Pittsburgh study

According to a new study from the University of Pittsburgh School of Medicine, only one out of 1,900 people met the American Heart Association's definition of ideal cardiovascular health. The study evaluated 1,933 participants and found that less than 10% met five or more criteria for heart-healthy behaviors.

What's new in hip care?

Studies analyzed Medicare beneficiaries who had elective primary THR for osteoarthritis and found the risk of revision was approximately two percent per year for the first 18 months post-surgery. High-performance hips with improved functional capacity are also being developed for active patients, offering more durable implants.