Add BrightSurf on Google Email

Science News for March 26, 2018


Obesity is shifting cancer to young adults

A meta-analysis by Case Western Reserve University researcher Nathan Berger reveals that obesity increases risk of 13 different cancers in young adults, with certain cancers now reported in people under 50. Obesity can alter cellular mechanisms promoting cancer and increase cancer rates as it rises among younger demographics.

How to make a good impression when saying hello

A computer program called CLEESE enables researchers to visualize the mental representations of others' personalities according to acoustic qualities of their voices. The study found that a descending pitch with emphasis on the second syllable makes a hello sound sincere, while a rising pitch inspires trust.

SourceCNRS·JournalProceedings of the National Academy of Sciences·DateMar 26, 2018

The Lancet Gastroenterology & Hepatology: Almost 300 million people have hepatitis B virus worldwide, but just 1 in 20 of those eligible receive treatment

The study highlights the significant burden of hepatitis B virus globally, with 292 million individuals living with the virus in 2016. Only 5% of eligible patients received antiviral therapy, and less than 1% of expectant mothers with high viral load received prophylaxis to prevent mother-to-child transmission.

SourceThe Lancet·JournalThe Lancet Gastroenterology & Hepatology·DateMar 26, 2018

New study finds younger aged children with symptoms of ADHD have reduced brain size

Children as young as four years old with ADHD symptoms showed reduced brain volumes in regions essential for behavioral control. The study provides an indication that anomalous brain structure is evident in the early stages of development and could help predict which children are most at risk for developing ADHD.

SourceGolinHarris DC·JournalJournal of the International Neuropsychological Society·DateMar 26, 2018

A new way to find better battery materials

Researchers at MIT have developed a new approach to designing battery materials that could lead to improved ion mobility and reduced reactivity. By analyzing the lattice properties of solid materials, they found a correlation between vibrational frequency and conductivity, allowing for accurate predictions of material properties.

SourceMassachusetts Institute of Technology·JournalEnergy & Environmental Science·DateMar 26, 2018

Study finds hospital quality report cards and readmission penalties may not tell whole story

A new study published in Annals of Internal Medicine found that hospital quality report cards and readmission penalties may not tell the whole story. The research revealed that when non-Medicare patients and unreported conditions are taken into account, half of hospitals would be subject to a change in their financial penalty status.

SourceBeth Israel Deaconess Medical Center·JournalAnnals of Internal Medicine·DateMar 26, 2018

New method speeds up development of medication

A new method has been developed to determine the crystal structures of organic salts, significantly speeding up the development of medications. This breakthrough is expected to reduce the time and cost associated with screening organic salts, leading to a faster discovery of effective pharmaceutical ingredients.

SourceUniversity of Zurich·JournalChemical Science·DateMar 26, 2018

Chance is a factor in the survival of species

A recent study by Lund University found that chance plays a significant role in local species survival, sometimes overriding conservation initiatives. The researchers also discovered negative frequency-dependence, which counteracts the role of chance and helps rare species recover.

SourceLund University·JournalThe American Naturalist·DateMar 26, 2018

Blowin' in the wind -- A source of energy?

Scientists at Linköping University have developed a method to generate electricity from the natural fluctuations in temperature caused by sunlight and shade. By combining plasmonic antennas with pyroelectric materials, they can harness energy from light fluctuations. This innovative technology has the potential to be used in various ap...

SourceLinköping University·JournalAdvanced Optical Materials·DateMar 26, 2018

Vocalization in nonhuman primates

Research on marmoset monkeys found that both internal states, such as arousal levels, and external factors, like timing of another monkey's vocalizations, impact vocalization changes. The study suggests a complex relationship between vocal production in nonhuman primates, with potential implications for understanding human communication.

SourceProceedings of the National Academy of Sciences·JournalProceedings of the National Academy of Sciences·DateMar 26, 2018

Tetrahedrality is key to the uniqueness of water

Researchers from The University of Tokyo's Institute of Industrial Science discovered that water's tetrahedral structure is key to its unique properties. The study found that the delicate balance between order and disorder in water allows it to exhibit high structural flexibility, resulting in unusual behavior such as expansion upon fr...

SourceInstitute of Industrial Science, The University of Tokyo·JournalProceedings of the National Academy of Sciences·DateMar 26, 2018

Rapid adaptation

A new study by UC Santa Barbara marine biologists shows that female purple sea urchins can condition their offspring to withstand stress induced by low pH levels, commonly caused by ocean acidification. The researchers found that the females' exposure to stressful conditions resulted in harder and larger offspring.

SourceUniversity of California - Santa Barbara·JournalMolecular Ecology·DateMar 26, 2018

Caribou drone study finds 'enormous variation' within herd

A new study using drones to track caribou movement found significant variation in sociality within herds, challenging the classic assumption of uniform behavior among group members. The research also showed that caribou follow isotropic interaction rules, with individuals influenced more by those in front of them than beside them.

SourceSanta Fe Institute·JournalPhilosophical Transactions of the Royal Society of London (B )·DateMar 26, 2018

Ultrathin endoscope captures neurons firing deep in the brain

Scientists have created an ultra-thin fiber-based endoscope that can image neurons firing in living mice, offering new insights into brain function. The device is five times thinner than the smallest commercially available microendoscopes and allows for deeper brain imaging without damaging tissue.

SourceOptica·JournalBiomedical Optics Express·DateMar 26, 2018

How infighting turns toxic for chimpanzees

A recent study analyzed the social networks of 19 male chimpanzees, revealing how power struggles and competition for mates led to the division of the chimp community. The findings suggest that internal conflicts can have far-reaching consequences in primate societies.

SourceDuke University·JournalAmerican Journal of Physical Anthropology·DateMar 26, 2018

Insect toxin detected in the world's longest animal

Researchers at Uppsala University discovered a peptide toxin in the bootlace worm that can paralyze and kill crustaceans and cockroaches, with potential applications in agricultural insecticides. The toxin affects sodium channels, causing electric signalling in nerves and muscles, leading to paralysis.

SourceUppsala University·JournalScientific Reports·DateMar 26, 2018

Looking deeper into brain function

Researchers propose a new concept to uncover connections between brain regions and cognitive functions, using a bottom-up approach. Recent advances in statistical methodology and brain imaging data provide the basis for this new method, which could help reveal the core functions of brain areas.

SourceForschungszentrum Juelich·JournalTrends in Cognitive Sciences·DateMar 26, 2018

New standards for ancient protein studies set forth by multi-national group of researchers

A team of researchers from institutions at the leading edge of palaeoproteomics have published guidelines to support good practices in the field and ensure robust, reproducible results. The guide aims to provide consistency to a new field, addressing issues such as data reporting standards, authentication measures, and lab contamination.

SourceMax Planck Institute of Geoanthropology·JournalNature Ecology & Evolution·DateMar 26, 2018

Food waste: The biggest loss could be what you choose to put in your mouth

A new study suggests that adopting plant-based diets could increase global food production by 50-200 times, making it a game-changer for addressing hunger and food waste. By replacing animal-based foods with edible crops, researchers estimate that 350 million more people could be fed with the same land resources.

SourceWeizmann Institute of Science·JournalProceedings of the National Academy of Sciences·DateMar 26, 2018

Animal migrations

Research estimates vulnerability and extinction risk of migratory species from different regions and ecosystems worldwide. Migratory animals face barriers such as roads, dams, and urban development, which can lead to population decline and increased extinction risk.

SourceUniversity of California - Santa Barbara·JournalPhilosophical Transactions of the Royal Society of London (B )·DateMar 26, 2018

Drug reduces inflammation in stroke patients

Researchers at the University of Manchester have found that an anti-inflammatory drug, Kineret, significantly reduces levels of inflammation in patients with ischemic strokes. The study, funded by the Stroke Association, shows promise for fast and effective treatment of stroke, but further trials are needed to confirm its effectiveness.

SourceUniversity of Manchester·JournalStroke·DateMar 26, 2018

Program to recruit under-represented minority high schoolers into medicine shows promise

A summer enrichment experience in South Carolina significantly improves students' biomedical knowledge by 38 percent, raising their understanding of how to prepare for medical school by 34 percent. The program aims to address physician shortages by recruiting more future physicians from underrepresented minority communities.

SourceAmerican Osteopathic Association·JournalThe Journal of the American Osteopathic Association·DateMar 26, 2018

As antibiotics fail, global consumption of antibiotics skyrockets, further driving drug resistance

A new study reveals that global antibiotic use increased by 39% between 2000 and 2015, with significant increases in low-income and middle-income countries. The study highlights the need for strategies to reduce unnecessary antibiotic use and support alternatives to address the growing threat of drug resistance.

SourceBurness·JournalProceedings of the National Academy of Sciences·DateMar 26, 2018

Vampire bat immunity and infection risk respond to livestock rearing

Research reveals that vampire bats in areas with high livestock abundance have different immune profiles, investing more in adaptive immunity to fight infections. The study's findings also suggest a higher risk of virus transmission to humans through cross-species contact, highlighting the importance of sustainable farming practices.

SourceUniversity of Georgia·JournalPhilosophical Transactions of the Royal Society of London (B )·DateMar 26, 2018

Neural fingerprints of altruism

Research elucidates the neural basis of complex altruistic behavior, discovering two brain circuits that govern moral decisions in war veterans. The study used CT scans and an altruistic decision task to map brain damage and behavior, finding correlations between specific brain areas and punishment or donation behaviors.

Antibody removes Alzheimer's plaques, in mice

Researchers at WashU Medicine have developed an antibody that targets APOE protein, leading to the removal of amyloid plaques from mouse brains. This breakthrough could potentially halt brain damage triggered by plaques in early stages of Alzheimer's disease.

SourceWashU Medicine·JournalJournal of Clinical Investigation·DateMar 26, 2018

Study links climate policy, carbon emissions from permafrost

A new study published in PNAS suggests that controlling greenhouse gas emissions could substantially reduce the consequences of permafrost thawing, but failing to do so would result in significant carbon releases. The research found that even with low emission scenarios, permafrost loss and soil carbon changes are still substantial.

SourceUniversity of Alaska Fairbanks·JournalProceedings of the National Academy of Sciences·DateMar 26, 2018

Lightweight metal foam blocks blastwave, debris from high-explosive rounds

Researchers at North Carolina State University have developed a new material, stainless steel composite metal foam (CMF), that offers much more protection than existing armor materials while lowering the weight remarkably. The CMF can block blast pressure and fragmentation from high-explosive incendiary rounds with minimal weight loss.

SourceNorth Carolina State University·JournalJournal of the Korean Society for Advanced Composite Structures·DateMar 26, 2018

Food production under plant-based and animal-based diets

A study by Ron Milo and colleagues reveals that plant-based diets offer a significant reduction in food loss and an increase in food production. Replacing animal-based products with plant-based alternatives could produce up to 20-fold more protein per acre, enough to feed approximately 350 million additional people.

SourceProceedings of the National Academy of Sciences·JournalProceedings of the National Academy of Sciences·DateMar 26, 2018