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Science News for February 18, 2008


Human culture subject to natural selection, Stanford study shows

A new Stanford University study reveals that human cultural traits are subject to natural selection, with functional traits evolving at a slower rate than decorative ones. The research compares Polynesian canoe designs and finds that faster or slower evolution rates indicate the presence of natural selection.

SourceStanford University·JournalProceedings of the National Academy of Sciences·DateFeb 18, 2008

MIT explains spread of 1918 flu

Researchers discovered two mutations in the H1N1 avian flu virus's hemagglutinin molecule enable it to bind tightly to human upper respiratory tract receptors. This binding affinity is crucial for viral transmission and explains why certain strains are more infectious than others.

SourceMassachusetts Institute of Technology·JournalProceedings of the National Academy of Sciences·DateFeb 18, 2008
Davis Instruments Vantage Pro2 Weather Station

Davis Instruments Vantage Pro2 Weather Station offers research-grade local weather data for networked stations, campuses, and community observatories.

Drug harm-reduction policy must be based on peer-reviewed science, not lobby group Web sites

A recent study highlights the need for policymakers to distinguish between peer-reviewed science and lobby group websites when advancing drug harm-reduction policies. The authors argue that the Institute on Global Drug Policy's online publications, which promote criminal-justice based approaches, contradict scientific consensus documents.

SourceThe Lancet_DELETED·JournalThe Lancet Infectious Diseases·DateFeb 18, 2008

Annals of Internal Medicine tip sheet for Feb. 19, 2008, issue

A two-year study found that glucosamine sulfate was no better than placebo in controlling hip pain and progression of osteoarthritis. In contrast, Taiwan's universal health insurance program showed a small increase in life expectancy among the least healthy population, but with increased utilization and healthcare expenditures.

SourceAmerican College of Physicians·JournalAnnals of Internal Medicine·DateFeb 18, 2008

Researchers aim to prevent global prematurity and stillbirths

The $1 million grant will be used to review current literature and identify new areas of research to reduce prematurity and stillbirths globally. The study aims to develop an internationally focused research program to understand the causes of premature births and prevent them on a global level.

SourceSeattle Children's·DateFeb 18, 2008

LSU researchers challenge analyses on sustainability of Gulf fisheries

Researchers from LSU and University of Washington dispute claims that the Gulf's ecosystem is collapsing due to overexploitation. They found little change in fish populations over 40 years, despite the region's unique environment influenced by the Mississippi River.

SourceLouisiana State University·JournalProceedings of the National Academy of Sciences·DateFeb 18, 2008
SAMSUNG T9 Portable SSD 2TB

SAMSUNG T9 Portable SSD 2TB transfers large imagery and model outputs quickly between field laptops, lab workstations, and secure archives.

Imitating monkey's 'jumping genes' could lead to new treatments for HIV

Researchers at University College London have identified a combination of genes in Asian monkeys that protects against retroviruses, including HIV. By mimicking these genes in humans, scientists hope to develop a novel gene therapy treatment for HIV/AIDS.

SourceUniversity College London·JournalProceedings of the National Academy of Sciences·DateFeb 18, 2008

Study: Before a CT scan or angiogram, many people should take inexpensive drug to protect kidneys

A new study suggests that taking N-acetylcysteine before a CT scan or angiogram can protect at-risk patients from kidney damage caused by iodine-containing contrast agents. The inexpensive drug, which is quick, convenient and widely available, appears to be the best choice for those with weakened kidneys.

SourceMichigan Medicine - University of Michigan·JournalAnnals of Internal Medicine·DateFeb 18, 2008
Rigol DP832 Triple-Output Bench Power Supply

Rigol DP832 Triple-Output Bench Power Supply powers sensors, microcontrollers, and test circuits with programmable rails and stable outputs.

As depression symptoms improve with antidepressants, hopelessness can linger

Researchers found that patients with depression may not experience improvements in hopefulness until several weeks or months after their depressive symptoms lift. This delay can lead to reduced adherence to treatment, increasing the risk of suicidal thoughts and behaviors.

SourceMichigan Medicine - University of Michigan·JournalGeneral Hospital Psychiatry·DateFeb 18, 2008

Scientists using laser light to detect potential diseases via breath samples, says new study

Researchers from NIST and CU-Boulder have developed a technique using optical frequency comb spectroscopy to detect molecules in breath that may be markers for diseases like asthma or cancer. The technique can identify thousands of different molecules simultaneously, providing highly reliable information about various diseases.

SourceUniversity of Colorado at Boulder·JournalOptics Express·DateFeb 18, 2008

New method for measuring biodiversity

Researchers develop new method to measure biodiversity, finding that most species have limited impact on ecosystem diversity. The study reveals that 'attractor' species promote biodiversity in tropical rainforests, while 'repellent' species have a negative effect.

SourceHelmholtz Association·JournalProceedings of the National Academy of Sciences·DateFeb 18, 2008
Apple iPhone 17 Pro

Apple iPhone 17 Pro delivers top performance and advanced cameras for field documentation, data collection, and secure research communications.

Unveiling the underwater ways of the white shark

The study reveals that white sharks migrate to two distant destinations annually, favoring specific areas along the California coast. Genetic analysis also shows that Pacific Ocean basin populations are genetically distinct, indicating long-term isolation in the Eastern Pacific.

SourceStanford University·DateFeb 18, 2008

'Internet predator' stereotypes debunked in new study

Most online sex offenders are adults who target teens, seducing victims into sexual relationships. The youth most vulnerable have histories of abuse, family problems, and risk-taking tendencies. Current educational efforts may not be effective in preventing these crimes.

SourceAmerican Psychological Association·JournalAmerican Psychologist·DateFeb 18, 2008
Apple AirPods Pro (2nd Generation, USB-C)

Apple AirPods Pro (2nd Generation, USB-C) provide clear calls and strong noise reduction for interviews, conferences, and noisy field environments.

To save or savor? It's decision time for Atlantic bluefin tuna

New research reveals two genetically distinct populations of Atlantic bluefin tuna, raising concerns about current fisheries-management practices and the impact of trans-Atlantic tourism on fish stocks. The study suggests that Mediterranean-spawned fish are flocking to the western Atlantic, potentially making it appear healthier than i...

SourceStanford University·DateFeb 18, 2008

Giant frog jumps continents

A 70-million-year-old giant frog fossil from Madagascar has been identified as a relative of living Horned toads, providing evidence for the link between Madagascar, India, and South America during the Late Cretaceous period. The discovery sheds light on the paleobiogeography of Madagascar's unique fauna.

SourceUniversity College London·JournalProceedings of the National Academy of Sciences·DateFeb 18, 2008

MGH study identifies enzyme that protects against intestinal bacterial toxin

A study published in PNAS identifies intestinal alkaline phosphatase as an enzyme that blocks the action of lipopolysaccharide, a molecule responsible for bacterial toxins' toxic effects. The findings suggest that feeding critically ill patients can prevent infection by stimulating IAP production.

SourceMassachusetts General Hospital·JournalProceedings of the National Academy of Sciences·DateFeb 18, 2008
Sky & Telescope Pocket Sky Atlas, 2nd Edition

Sky & Telescope Pocket Sky Atlas, 2nd Edition is a durable star atlas for planning sessions, identifying targets, and teaching celestial navigation.

Scientists explore consciousness

A team of scientists has made a significant breakthrough in understanding conscious perception by showing how single neurons react to perceived and nonperceived images. The study found that neurons respond with an 'all-or-none' firing rate when pictures are recognized, enabling the prediction of recognition beyond chance.

SourceUniversity of Leicester·JournalProceedings of the National Academy of Sciences·DateFeb 18, 2008

Education programs may boost teens' knowledge about acne

A study of 100 teenagers found that both written handouts and computerized presentations with audiovisual components improved their knowledge of acne. The education tools focused on common misperceptions and provided information on causes, exacerbating factors, and treatment options.

SourceJAMA Network·JournalArchives of Dermatology·DateFeb 18, 2008

Focus on atrial fibrillation recognizes growing importance of common arrhythmia

A recent study found that patients taking statins were 61% less likely to develop atrial fibrillation. The American College of Cardiology also releases new performance measures for monitoring AF care, which focus on stroke prevention through medication and regular monitoring.

SourceAmerican College of Cardiology·JournalJournal of the American College of Cardiology·DateFeb 18, 2008

Is transgenic cotton more profitable?

A study found that profitability in transgenic cotton was most closely associated with yields, rather than the technologies themselves. The research compared production systems using different transgenic technologies and non-transgenic cultivars, concluding that higher returns were achieved from non-transgenic options.

SourceAmerican Society of Agronomy·JournalAgronomy Journal·DateFeb 18, 2008
Anker Laptop Power Bank 25,000mAh (Triple 100W USB-C)

Anker Laptop Power Bank 25,000mAh (Triple 100W USB-C) keeps Macs, tablets, and meters powered during extended observing runs and remote surveys.

CD36 deficiency and age-related macular degeneration

A study published in PLoS Medicine found that CD36 deficiency leads to choroidal involution, a key feature of dry age-related macular degeneration. The research also showed that COX-2 down-regulation plays a crucial role in this process.

SourcePLOS·JournalPLOS Medicine·DateFeb 18, 2008

E-mail access may improve patient-surgeon communication

Providing patients with e-mail access to their surgeon appears to improve communication without affecting patient satisfaction. Most e-mails sent addressed one issue, with popular topics including general information and postoperative recovery.

SourceJAMA Network·JournalArchives of Surgery·DateFeb 18, 2008

Researchers probe a DNA repair enzyme

The researchers studied the archaeal version of Rad3, a unique helicase involved in DNA repair. The findings revealed that the integrity of an iron-sulfur cluster is crucial for proper function of the enzyme.

SourceUniversity of Illinois at Urbana-Champaign, News Bureau·JournalJournal of Biological Chemistry·DateFeb 18, 2008
DJI Air 3 (RC-N2)

DJI Air 3 (RC-N2) captures 4K mapping passes and environmental surveys with dual cameras, long flight time, and omnidirectional obstacle sensing.

Research uncovers the social dynamics of yellow jackets

Researchers found that male yellow jacket paternity has no impact on colony dynamics, with females exhibiting cooperative behavior despite multiple mating. The study suggests a benefit to colonies for queens having multiple partners, leading to increased success and reproductive output.

SourceGeorgia Institute of Technology Research News·JournalMolecular Ecology·DateFeb 18, 2008

Laser light may be able to detect diseases on the breath

Researchers have created a new technique using laser light to analyze breath samples, detecting biomarkers for diseases like asthma and cancer. This non-invasive method could provide rapid and reliable health screenings, addressing existing limitations in breath analysis.

SourceOptica·JournalOptics Express·DateFeb 18, 2008

Into the abyss: Deep-sixing carbon

Dr. David Keith proposes a potential solution for reducing CO2 emissions by storing it in giant inflatable bags on the seabed. The concept is technically feasible with current-day technology and may offer a viable complement to other storage methods.

SourceNatural Sciences and Engineering Research Council·DateFeb 18, 2008

MIT creates gecko-inspired bandage

Researchers at MIT have created a waterproof adhesive bandage inspired by geckos, which may soon be used to patch up surgical wounds or internal injuries. The bandage has a unique nanoscale landscape that allows it to stick in wet environments and is biodegradable.

SourceMassachusetts Institute of Technology·JournalProceedings of the National Academy of Sciences·DateFeb 18, 2008
Aranet4 Home CO2 Monitor

Aranet4 Home CO2 Monitor tracks ventilation quality in labs, classrooms, and conference rooms with long battery life and clear e-ink readouts.

Cocaine's effects on brain metabolism may contribute to abuse

A recent study suggests that cocaine's impact on brain metabolism may be a key factor in its addictive nature. The research, conducted at Brookhaven National Laboratory, found that the drug had significant effects on brain metabolism beyond just dopamine, even in mice lacking the gene for dopamine transporters.

SourceDOE/Brookhaven National Laboratory·JournalSynapse·DateFeb 18, 2008

Learning from cod collapse to save tuna

Scientists analyze lessons from cod collapse to advocate sustainable tuna management, including MSC certification and public awareness. Innovative research using data-logging tags can help protect bluefin tuna populations.

SourceWorld Wildlife Fund·DateFeb 18, 2008

Credit-card-sized platform for volatile compound analysis CAREER project goal

A credit-card-sized gas chromatography platform is being developed to analyze volatile compounds in seconds, enabling faster diagnosis and monitoring of diseases like diabetes and breast cancer. The new architecture, named GC Matrix, will separate complex compounds using MEMS technology, improving speed, portability, and power efficiency.

SourceVirginia Tech·DateFeb 18, 2008

New filter clears up fiber optic communications

A team of researchers from Ames Laboratory has developed a novel add-drop filter using three-dimensional photonic crystals, which enables efficient sorting and distribution of multiple wavelength channels over optical fibers. The technology promises to enhance data transmission with near 100% efficiency.

SourceDOE/Ames National Laboratory·DateFeb 18, 2008

Early environment may be key to determining bird migration location

Researchers discovered that young birds' first winter environment plays a crucial role in determining their lifetime breeding grounds. The study suggests that access to water in the winter habitat is a critical factor in shaping their future migrations.

SourceUniversity of Maryland·JournalProceedings of the National Academy of Sciences·DateFeb 18, 2008
Fluke 87V Industrial Digital Multimeter

Fluke 87V Industrial Digital Multimeter is a trusted meter for precise measurements during instrument integration, repairs, and field diagnostics.

Oceans, coasts and your health: Reducing risks and reaping rewards

A growing awareness is being raised about the interconnectedness of ocean health and human well-being, with emerging diseases and contaminants posing significant risks. NOAA's Oceans and Human Health Initiative aims to develop early warning systems to mitigate these risks while optimizing the health benefits of sea products.

SourceNOAA Research·DateFeb 18, 2008

Nitrous oxide: definitely no laughing matter

The Nitrous Oxide Focus Group brings together influential organizations to address the potent greenhouse gas's significant impact on agriculture and industry. Key research findings suggest that nitrous oxide is 300 times more potent than carbon dioxide, making its longevity in the atmosphere a potentially more damaging legacy.

SourceUniversity of East Anglia·JournalJournal of Biological Chemistry·DateFeb 18, 2008

Herpes virus link to complications in pregnancy

Researchers have discovered a link between viral infection, particularly from the herpes group, and pregnancy-induced hypertensive disease and pre-term birth. The study found viral nucleic acid in heel-prick blood samples of 1326 newborn babies, including over 400 with cerebral palsy.

SourceUniversity of Adelaide·JournalBritish Journal of Obstetrics and Gynaecology·DateFeb 18, 2008
Apple Watch Series 11 (GPS, 46mm)

Apple Watch Series 11 (GPS, 46mm) tracks health metrics and safety alerts during long observing sessions, fieldwork, and remote expeditions.

Amazon corridors far too narrow, warn scientists

Protected forest strips need to be at least 400m wide to conserve bird and mammal species in the Amazon rainforest. The current width of 60m is deemed insufficient, according to a new study by University of East Anglia researchers.

SourceUniversity of East Anglia·JournalConservation Biology·DateFeb 18, 2008