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Science News for December 7, 2008


Southern Ocean resistant to changing winds

New study reveals that despite increased wind speeds, Southern Ocean currents and upwelling patterns remain unchanged, contradicting previous concerns about the ocean's capacity to combat climate change. The research suggests that small-scale ocean eddies balance stronger winds, preventing a significant impact on carbon dioxide storage.

SourceCSIRO Australia·JournalNature Geoscience·DateDec 7, 2008

Nanotechnology 'culture war' possible, says Yale study

A Yale study reveals that the public's perception of nanotechnology is highly polarized based on cultural values, with some groups viewing it as safe and others as risky. The study suggests that public education strategies should consider citizens' predispositions to effectively communicate about nanotechnology.

SourceYale University·JournalNature Nanotechnology·DateDec 7, 2008

'Strained' quantum dots show new optical properties

Scientists at Emory University have developed strain-tuned quantum dots with new optical properties, reducing toxicity and size limitations. These particles can be made mostly of zinc and selenium, emitting light at near-infrared wavelengths, which could improve biomedical imaging and optoelectronics.

SourceEmory Health Sciences·JournalNature Nanotechnology·DateDec 7, 2008

Alzheimer's disease breakthrough

A team of CSIRO scientists has developed a rapid screening system to identify inhibitors of toxic multimers formed during Alzheimer's disease progression. Folate is shown to be beneficial in the screening system, and could lead to the discovery of new agents that may prevent or delay the onset of the disease.

The genetic heart of the lipids

A population cohort study found six novel genetic variants associated with lipid levels, a common indicator of heart or artery disease. The research team analyzed over 20,000 DNA samples from European countries, increasing the power of 'genetic microscopes' to identify lipid-gene links.

SourceWellcome Trust Sanger Institute·JournalNature Genetics·DateDec 7, 2008

For nano, religion in US dictates a wary view

A new study reveals that nanotechnology is perceived as less morally acceptable in the United States and certain European countries with stronger religious traditions. The survey found that levels of religiosity are a strong predictor of views on nanotechnology, highlighting a paradox in a country known for its technological advancements.

SourceUniversity of Wisconsin-Madison·JournalNature Nanotechnology·DateDec 7, 2008

Genes for 9 health indicators

A genome-wide study has identified 23 regions of the genome associated with nine metabolic traits, including cardiovascular disease, type 2 diabetes, blood pressure, and inflammation. The study found 14 known genetic variants and nine novel variants, five of which are good candidates for important variants.

SourceWellcome Trust Sanger Institute·JournalNature Genetics·DateDec 7, 2008