Add BrightSurf on Google Email

Science News for February 27, 2013


Ectopic eyes function without connection to brain

Scientists at Tufts University have shown that transplanted eyes can confer vision without a direct neural connection to the brain. The study used frog models and found that ectopic eyes could 'see' and elicit responses similar to those of animals with natural eyes.

SourceTufts University·JournalJournal of Experimental Biology·DateFeb 27, 2013

Defining the new normal in aging

Researchers argue that traditional notions of healthy and successful aging fall short for many Canadians living with chronic diseases. Instead, they advocate for supporting older adults to live well according to their own definitions of health.

SourceUniversity of Alberta·JournalNursing Inquiry·DateFeb 27, 2013

Trust makes you delusional and that's not all bad

Research from Northwestern University and Redeemer University College found that trusting partners remember transgressions as less severe, while low-trust partners recall them as more severe. This distorted memory affects how individuals think about their partner and relationship.

SourceNorthwestern University·JournalJournal of Personality and Social Psychology·DateFeb 27, 2013

Researchers look to breath to identify stress

A pilot study found six compounds in the breath that increase following stressful mental arithmetic exercises, which may lead to a rapid stress detector. The study's findings are promising but need to be scaled-up with more people and settings before concrete conclusions can be made.

SourceIOP Publishing·JournalJournal of Breath Research·DateFeb 27, 2013

Silver nanoparticles may adversely affect environment

Researchers at Duke University found that silver nanoparticles can have adverse effects on plants and microorganisms in low doses, leading to reduced biomass and altered enzyme activity. The study's findings highlight the need for further research into the environmental impact of these particles.

SourceDuke University·JournalPLOS ONE·DateFeb 27, 2013

GSA Today: Putting time in its place

A team of scientists proposes a new system for classifying units of the Geological Time Scale, resolving the debate between single-time and dual-time hierarchies. The proposed realignment maintains both parallel sets of units, allowing for flexibility in choosing one or the other as needed.

SourceGeological Society of America·JournalGSA Today·DateFeb 27, 2013

How much protection is enough?

Protection of marine areas from fishing significantly increases fish density and biomass. Even partial protection yields a 50% increase in biomass for target species like lobsters and scallops. However, the success of marine protection depends on its size and management style.

SourceBMC (BioMed Central)·JournalEnvironmental Evidence·DateFeb 27, 2013

Heading a soccer ball may affect cognitive performance

A tablet-based experiment found that subconcussive head impacts in soccer can cause changes in performance on certain cognitive tasks, particularly those requiring voluntary responses. High school female soccer players were significantly slower than non-players when pointing away from a target.

SourcePLOS·JournalPLOS ONE·DateFeb 27, 2013

A game plan for climate change

Researchers developed an Adaptation for Conservation Targets (ACT) framework to assess climate change impacts on natural resources. The framework enables scientists and managers to work together to adjust management actions and address the 'What do we do about it?' question.

SourceWildlife Conservation Society·JournalConservation Biology·DateFeb 27, 2013

Louse genetics offer clues on human migrations

A new genetic analysis of human lice from around the world sheds light on their evolution, disease transmission, and resistance to insecticides. The study's findings suggest that lice can be used as a tool to understand human migration patterns and test ideas about human evolution.

SourcePLOS·JournalPLOS ONE·DateFeb 27, 2013

Rice builds nanotube photodetector

Researchers at Rice University have developed a nanotube-based photodetector that can detect light across the visible and infrared spectrum. The device, made from extra-long carbon nanotubes, promises to make possible new optoelectronic devices, solar cells, and specialized cameras.

SourceRice University·JournalScientific Reports·DateFeb 27, 2013

Wayne State study shows airborne dust in urban areas impacts lead levels in children

A Wayne State University study found seasonal fluctuations in blood lead levels among children are linked to resuspended dust contaminated with lead. The research, based on nine years of data from over 367,000 children, highlights the need for improved controls to prevent lead exposure.

SourceWayne State University - Office of the Vice President for Research·JournalEnvironmental Science & Technology·DateFeb 27, 2013

Higher indoor humidity inactivates flu virus particles

Research published in PLOS ONE found that higher indoor humidity levels can significantly reduce the infectivity of influenza virus particles. Indoor humidity above 40% is essential to inactivate flu virus particles, with most inactivation occurring within the first 15 minutes, reducing viral particle infectivity by up to 86%.

SourcePLOS·JournalPLOS ONE·DateFeb 27, 2013

Reading the human genome

Researchers have achieved a major advance in understanding genetic information transcription from DNA to RNA, illuminating critical molecular interactions during the step-by-step process. The study provides new insights into how proteins work together to ensure accurate loading of DNA into Pol II at the start of a gene sequence.

Protein balance key in preventing cancer

Researchers at Fox Chase Cancer Center found that two antagonistic proteins help keep leukemia at bay by maintaining balance in stem cell production. The study suggests that new compounds could fight cancer by targeting the pathways responsible for regulating these proteins.

SourceFox Chase Cancer Center·JournalDevelopmental Cell·DateFeb 27, 2013

Research explores factors that impact adolescent mental health

New research investigates how social information processing patterns, urgency, and rumination contribute to adolescent mental health disorders. The studies found that Fast Track intervention improved antisocial behavior in youth, while urgency levels predicted depression, and individual differences in distraction shared genetic sources...

SourceAssociation for Psychological Science·JournalClinical Psychological Science·DateFeb 27, 2013

Studying the health of same-sex couples

A national study found same-sex couples who cohabitate have poorer health than their heterosexual married counterparts, despite potential benefits from marriage such as partner insurance and social support. The research may suggest that legalizing same-sex marriage could positively impact the health of these individuals.

SourceMichigan State University·JournalJournal of Health and Social Behavior·DateFeb 27, 2013

Unlocking fuel cell conductivity

Researchers have devised a model of oxygen-ion dynamics that contribute to the conductivity of yttria stabilized zirconia (YSZ), a material of great interest in electrochemical devices. By understanding oxygen-ion diffusion, scientists aim to reduce fuel cell operating temperatures from above 700°C to room temperature.

SourceSpringer·JournalThe European Physical Journal B·DateFeb 27, 2013

Study: Same-sex cohabitors less healthy than those in heterosexual marriages

A recent study published by the American Sociological Association found that same-sex cohabitors experience poorer self-rated health compared to their heterosexual married counterparts. The study controlled for socioeconomic status and found significant disparities in health between same-sex cohabitors and married individuals.

SourceAmerican Sociological Association·JournalJournal of Health and Social Behavior·DateFeb 27, 2013

Changing shape makes chemotherapy drugs better at targeting cancer cells

Bioengineering researchers at UC Santa Barbara found that changing the shape of chemotherapy drug nanoparticles from spherical to rod-shaped made them up to 10,000 times more effective at targeting and delivering anti-cancer drugs to breast cancer cells. The rod-shaped nanoparticles were engineered with an antibody called trastuzumab t...

SourceUniversity of California - Santa Barbara·JournalProceedings of the National Academy of Sciences·DateFeb 27, 2013

Seeing through HIV's disguises

Scientists at Johns Hopkins Medicine have identified 25 human proteins that may be critical to HIV-1's ability to infect new cells. These proteins are found in viruses from two different types of infected cells, providing a potential target for diagnosis and treatment.

SourceJohns Hopkins Medicine·JournalJournal of Proteome Research·DateFeb 27, 2013