Add BrightSurf on Google Email

Science News for October 28, 2015


Can we unconsciously 'hear' distance?

Researchers at the University of Rochester found that humans can detect and process sound delays as short as 40 milliseconds to fine-tune visual distance estimates. Participants consistently perceived shapes paired with delayed clicks as more distant, even when they were not, suggesting an unconscious link between sound delays and visu...

SourceUniversity of Rochester·JournalPLOS ONE·DateOct 28, 2015

In this month's Physics World: Extremes...

Researchers have pushed boundaries to establish new limits in science, from growing carbon nanotubes with exceptional reflectivity to studying extremophiles like Deinococcus radiodurans. These discoveries highlight the importance of exploring extremes and advancing our understanding of physics.

SourceIOP Publishing·JournalPhysics World·DateOct 28, 2015

'Virtual Week' brain game has potential to help older adults remain independent longer

A one-month training program on the Virtual Week computer brain game strengthens prospective memory in older adults, which is crucial for planning and everyday functioning. The study shows that these cognitive gains transfer to real-world activities of daily living, with participants performing more tasks correctly than control groups.

SourceBaycrest Centre for Geriatric Care·JournalFrontiers in Human Neuroscience·DateOct 28, 2015

Paper-based test could diagnose hepatitis B and assess male fertility at low cost

A new paper device developed by scientists can rapidly and inexpensively diagnose hepatitis B and assess male fertility, making it a valuable tool for diagnosing people in low-income areas. The test, which costs less than $1 per device, can detect the hepatitis B virus in blood serum and determine sperm DNA integrity with high accuracy.

SourceAmerican Chemical Society·JournalJournal of the American Chemical Society·DateOct 28, 2015

Testing for secondhand marijuana exposure

A new urine screening method can detect even small amounts of chemicals resulting from secondhand marijuana exposure, addressing the challenge of assessing health effects. The developed method is 10 to 100 times more sensitive than current tests and could be used for large-scale population studies.

SourceAmerican Chemical Society·JournalAnalytical Chemistry·DateOct 28, 2015

Preshistoric plumage patterns

A recent discovery of an Ornithomimus dinosaur with preserved tail feathers and soft tissue is shedding light on the convergent evolution between dinosaurs and birds. The findings suggest that these dinosaurs used feathered regions to regulate body temperature, similar to modern ostriches.

SourceUniversity of Alberta·JournalCretaceous Research·DateOct 28, 2015

Mount Sinai scientists deploy data analysis to identify subtypes of common disease

Researchers used data analysis to identify three distinct subtypes of patients with type 2 diabetes, each associated with different clinical characteristics and genetic variants. The study suggests a novel approach that can be applied to virtually any disease, potentially leading to more effective diagnosis and treatment.

SourceThe Mount Sinai Hospital / Mount Sinai School of Medicine·JournalScience Translational Medicine·DateOct 28, 2015

Electric eels curl up to deliver even more powerful shocks

Researchers have discovered that electric eels can double the power of their electrical discharge by curling up their bodies, allowing them to handle larger and more struggling prey. This behavior enables the eels to induce involuntary fatigue in prey, rendering them temporarily immobilized.

SourceCell Press·JournalCurrent Biology·DateOct 28, 2015

VISTA discovers new component of Milky Way

A team of astronomers has used data from the VVV survey to discover a previously unknown component of our home galaxy, the Milky Way. The new component is a thin disc of young stars across the galactic bulge, which was buried behind thick clouds of dust.

SourceESO·JournalThe Astrophysical Journal Letters·DateOct 28, 2015

Race starts could give some athletes an unfair advantage

A study published in Frontiers in Psychology found that varying pause times before the starting gun can result in significant differences in finishing times among athletes. The researchers propose introducing a warning step to ensure all athletes are ready before the start, and even suggest computerized procedures to minimize human error.

SourceUniversity of Oxford·JournalFrontiers in Psychology·DateOct 28, 2015

Scientists use exhaled breath to detect hypoxia

Researchers have developed a technique that uses volatile organic compounds (VOCs) in exhaled breath to identify biomarkers of hypoxia. The study replicated a standard 'hypoxic' event and found that VOC analysis could detect the condition, which can be life-threatening if left untreated.

SourceIOP Publishing·JournalJournal of Breath Research·DateOct 28, 2015

The sun is brightening -- but not in China

A study published in Scientific Reports found that surface solar radiation in China has decreased due to higher air pollution and lower wind speeds. The research reveals that the solar dimming increased significantly during the day in polluted areas, with 20% of reduced solar radiation attributed to aerosols.

SourceUniversity of Gothenburg·JournalScientific Reports·DateOct 28, 2015

UNH-led study solves mysteries of Voyager 1's journey into interstellar space

Voyager 1's journey into interstellar space has been clarified by a UNH-led study, revealing that the spacecraft crossed the heliopause but is now navigating a 'muddied' magnetic field region. This discovery confirms two key findings: the center of the IBEX ribbon is the direction of the interstellar magnetic field and Voyager 1 is bey...

SourceUniversity of New Hampshire·JournalThe Astrophysical Journal Letters·DateOct 28, 2015

Marital status linked to better functional outcomes following surgery, Penn Medicine study finds

A new study from the University of Pennsylvania found that married patients had a significantly lower risk of dying or developing a new functional disability after cardiac surgery. The study analyzed data from over 29,000 adults and found that unmarried patients were 40% more likely to experience poor outcomes.

Retroviral RNA may play a part in liver cancer

Research suggests that retroviral long-terminal-repeat promoters may contribute to the emergence of hepatocellular carcinoma. The study found that these elements are highly activated in liver cancer tumors and non-tumor tissue from patients with different etiologies, including viral hepatitis or alcohol use.

SourceRIKEN·JournalGenome Research·DateOct 28, 2015

Electric eel: Most remarkable predator in animal kingdom

The electric eel has been found to possess intricate maneuvering techniques, allowing it to double its electrical shock on larger prey. Its electrical system also enables remote control over prey muscles, producing strong muscle contractions. The eel uses high-voltage pulses to track fast-moving prey and detect hidden meals.

SourceVanderbilt University·JournalCurrent Biology·DateOct 28, 2015

Signs point to imminent public health workforce exit

A new study reveals that 38% of state public health workers plan to leave the workforce by 2020, with those aged 25-40, racial and ethnic minorities, and those with fewer than 10 years of experience being most likely to exit. The study also highlights pay disparities between different groups in the public health sector.

SourceAssociation of State and Territorial Health Officials·JournalJournal of Public Health Management and Practice·DateOct 28, 2015

Do hospitals tell patients about charity care options? Study finds room for improvement

A new study from the University of Michigan Institute for Healthcare Policy and Innovation found that nearly all nonprofit hospitals have written charity care policies, but many fail to notify patients about their potential eligibility or charge them fairly. Hospitals in states without expanded Medicaid reported having less generous ch...

SourceMichigan Medicine - University of Michigan·JournalNew England Journal of Medicine·DateOct 28, 2015

Could your job be making you obese?

A new study published in Social Science & Medicine suggests that having skills and freedom at work is linked to lower BMI and smaller waist size, while needing to make many decisions is linked to bigger waist size. The findings highlight the importance of considering job control components separately when assessing their impact on health.

SourceElsevier·JournalSocial Science & Medicine·DateOct 28, 2015