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Science News for April 2, 2008


Studies' message to women: Keep your cool

Research conducted by Yale University psychologist Victoria Brescoll reveals that women who express anger are viewed as less capable than men. In contrast, angry men are seen as more competent and deserving of higher status. Explaining one's emotions may help mitigate this bias.

SourceYale University·JournalPsychological Science·DateApr 2, 2008

Gypsy moth management made more efficient, cost-effective

A computer model developed by Penn State University and the University of Cambridge recommends tailored strategies to manage gypsy moths, focusing on medium-density infestations to reduce high-density ones. The model aims to save time and money for land managers while slowing the spread of invasive species across the US.

SourcePenn State·JournalEcological Applications·DateApr 2, 2008

Is DNA repair a substitute for sex?

Researchers propose that bdelloid rotifers' efficient DNA repair capacity and whole-genome duplication enable them to thrive without sex. Their extraordinary resistance to radiation and ability to survive desiccation suggest that their DNA repair mechanism may provide the benefits of sex.

SourceMarine Biological Laboratory·JournalProceedings of the National Academy of Sciences·DateApr 2, 2008

The influence of the irrelevant

Researchers found that erotic images stimulated a positive emotional response, increasing activation in the nucleus accumbens and leading to bigger financial risks. The study's findings have implications for effective emotional appeals in various fields, including finance and marketing.

SourceStanford University·JournalNeuroreport·DateApr 2, 2008

Do we need alcohol prevention programs for 'tweens?'

A large study of six grade students found that early intervention is imperative to prevent teen alcohol abuse. The researchers identified several key factors, including parental influences, peer influences, environment, and involvement in sports and other activities.

SourceSAGE·JournalHealth Education & Behavior·DateApr 2, 2008

Carnegie Mellon researchers to curb CO2 emissions

Researchers at Carnegie Mellon University have developed a new environmental impact model to help Canada reduce its carbon dioxide emissions. The model identifies farming and power generation as the largest sources of Canadian emissions per dollar output, emphasizing the need for alternative fuels and solutions to combat global warming.

Lack of sleep can provoke sleepwalking

Researchers from Université de Montréal found that sleep deprivation can trigger sleepwalking in predisposed individuals. The study, published in Annals of Neurology, showed that sleepwalkers who experienced one night of sleep followed by one night of wakefulness had a significant increase in behavioral episodes.

SourceUniversity of Montreal·JournalAnnals of Neurology·DateApr 2, 2008

Models look good when predicting climate change

A new study by University of Utah meteorologists finds that current climate models are accurate and can be valuable tools for reversing global warming trends. The study shows that coupled models can simulate present-day climate with accuracy approaching conventional observations.

SourceUniversity of Utah·JournalBulletin of the American Meteorological Society·DateApr 2, 2008

New formula for combating the greenhouse gas nitrous oxide

Soil scientists have created a new mathematical model that can accurately calculate the quantities of nitrous oxide produced during wastewater treatment processes like anammox and denitrification. This breakthrough aims to improve wastewater treatment effectiveness and reduce N2O emissions, a key concern for climate protection.

SourceHelmholtz Association·JournalRapid Communications in Mass Spectrometry·DateApr 2, 2008

Emission reduction assumptions for carbon dioxide overly optimistic, study says

A new study published in Nature argues that the Intergovernmental Panel on Climate Change (IPCC) has underestimated the technological challenges of reducing CO2 emissions. The authors suggest that the IPCC's assumptions are overly optimistic, as spontaneous advances in technology will not carry most of the burden of achieving future em...

Ayurvedic nightshade deadly for dengue mosquito

Research published in BMC Complementary and Alternative Medicine suggests that the berries of Solanum villosum have potential for keeping mosquitoes at bay. The study found that S. villosum was particularly effective at eliminating Stegomyia aegypti larvae, which can spread diseases like dengue fever.

SourceBMC (BioMed Central)·JournalBMC Complementary and Alternative Medicine·DateApr 2, 2008