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Science News for July 28, 2011


In the pursuit of dangerous clumps

Researchers at Helmholtz-Zentrum Dresden-Rossendorf develop a system to recreate amyloid formation on artificial surfaces, providing insights into disease mechanisms. The customized mica surface exhibits hydrophobic properties, facilitating the formation of oligomers and fibrils that can destroy cell surfaces.

SourceHelmholtz Association·JournalThe Journal of Chemical Physics·DateJul 28, 2011

Strength in numbers

Modern humans arriving from Africa swarmed the region with over ten times the population of Neanderthals, leading to their sudden disappearance. The incoming group's superior hunting technologies, social contacts, and complex behavioural patterns allowed them to outcompete Neanderthals for resources.

SourceUniversity of Cambridge·JournalScience·DateJul 28, 2011

Endorsements matter but voters are wise to media bias

Research from Brown University economists finds that voters are more likely to support recommended candidates after newspaper endorsements, but credibility matters. Moderate voters are most influenced by endorsements. Key findings suggest voters filter out media bias when making informed decisions.

SourceBrown University·JournalThe Review of Economic Studies·DateJul 28, 2011

Researchers develop mouse with 'off switch' in key brain cell population

Scientists create genetically modified mice with a built-in 'off switch' for their serotonin-producing cells, which control breathing, temperature regulation, and mood. The discovery sheds light on sudden infant death syndrome (SIDS) and depressive disorders, two conditions linked to low serotonin levels.

How bats stay on target despite the clutter

Researchers at Brown University discovered how bats can distinguish between target echoes and background clutter using subtle changes in sound intensity. By delaying their neural response to weaker echoes, bats can effectively 'defocus' clutter, maintaining a clear image of the target.

SourceBrown University·JournalScience·DateJul 28, 2011

Fadang photo makes the cover of major botanical journal

Research by Thomas Marler and Karl Niklas examines environment's influence on Guam cycad reproduction, finding wind's role in seed production is less crucial than initially thought. The study suggests insects play a more significant role in pollination, highlighting the need for conservation efforts to protect the endangered species.

SourceUniversity of Guam·JournalInternational Journal of Plant Sciences·DateJul 28, 2011

Elusive prey

New research reveals how C. elegans nematodes suppress exploratory head movements to evade predacious fungi, increasing survival chances. The study suggests a biological and ecological link between genes, molecules, neural circuits, and behavior.

SourceUMass Chan Medical School·JournalCurrent Biology·DateJul 28, 2011

Gout prevalence swells in US over last 2 decades

A new study finds that gout prevalence has risen significantly in the US adult population, affecting 8.3 million people, while hyperuricemia affects 43.3 million adults. The study suggests that managing modifiable risk factors like obesity and hypertension could help prevent further escalation of gout and hyperuricemia.

SourceWiley·JournalArthritis & Rheumatism·DateJul 28, 2011

Trade practices key in deciding a trade's moral legitimacy

A recent study published in Administrative Science Quarterly found that the way goods are traded plays a crucial role in determining an industry's moral legitimacy. The researchers examined the trade of human cadavers for medical education and research, highlighting how narrative distinctions and proper practices can render markets moral.

SourceSAGE·JournalAdministrative Science Quarterly·DateJul 28, 2011

Genetic evidence clears Ben Franklin

A study by Rice University biologist Evan Siemann and colleagues found that the invasive Chinese tallow tree was not introduced to the US by Ben Franklin. The genetic evidence suggests that the trees originated from eastern China, with a faster growth rate in the US than their Chinese counterparts.

SourceRice University·JournalAmerican Journal of Botany·DateJul 28, 2011

Caltech researchers increase the potency of HIV-battling proteins

Researchers at Caltech have developed a new, more potent form of the HIV-fighting protein cyanovirin-N by linking two proteins together. The engineered protein, called CVN2L0, is 18 times more effective at preventing infection than the naturally occurring single protein and neutralizes all 33 subtypes of HIV tested against it.

SourceCalifornia Institute of Technology·JournalProceedings of the National Academy of Sciences·DateJul 28, 2011

The role of relaxation in consumer behavior

Researchers found that states of relaxation consistently increase the monetary valuations of products, with relaxed individuals valuing products more highly than their less-relaxed counterparts. This effect applies to a wide range of products, including luxury items and services.

SourceColumbia Business School·JournalJournal of Marketing Research·DateJul 28, 2011

Lawson researchers take control of cancer

Researchers at Lawson Health Research Institute have found that introducing maspin protein into the nucleus of cancer cells can significantly limit tumor growth and spread. This discovery may lead to new targets for drug development and improved understanding of cancer prognosis.

SourceLawson Research Institute·JournalLaboratory Investigation·DateJul 28, 2011

New study outlines economic and environmental benefits to reducing nitrogen pollution

A new study shows that reducing nitrogen pollution from wastewater treatment plants can come with significant economic benefits, including up to $600 million per year. The study also found that using emissions credits could create an incentive for utilities to adopt technologies that reduce climate pollution and improve water quality.

SourceColumbia University·JournalEnvironmental Science & Technology·DateJul 28, 2011

SOHO watches a comet fading away

The comet's water production in 2010 was three times less than in 1997, with a sudden increase of hydrogen signatures detected by SWAN. This observation challenges standard models of comet behavior and highlights the need for further analysis to understand the underlying causes.

SourceNASA/Goddard Space Flight Center·JournalThe Astrophysical Journal Letters·DateJul 28, 2011

Put the brakes on using your brain power

German researchers have successfully used electroencephalography (EEG) to detect drivers' intentions to brake, reducing reaction time by 130 milliseconds. The system uses EEG and myoelectric activity to detect emergency situations before they occur, potentially saving thousands of car accidents caused by human error.

SourceIOP Publishing·JournalJournal of Neural Engineering·DateJul 28, 2011