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Science News for November 8, 2018


New UMBC research suggests global reforestation efforts need to take the long view

A new study by UMBC researchers highlights the importance of taking a long-term approach to reforestation efforts. Secondary forest patches are often quickly re-cleared, but their full benefits don't kick in until they're decades old. The study found that large patches and those alongside rivers were less likely to be re-cleared.

SourceUniversity of Maryland Baltimore County·JournalConservation Letters·DateNov 8, 2018

Unique study shows how bats maneuver

Researchers at Lund University have made a groundbreaking discovery about bat flight techniques, revealing that they turn on the upstroke of their wings to navigate. This new understanding has significant implications for the development of next-generation drones.

SourceLund University·JournalJournal of The Royal Society Interface·DateNov 8, 2018

Conversion 'therapy' begins at home

A study by the Family Acceptance Project found that LGBT young people experiencing conversion therapy report higher levels of depression, suicidal behavior, and lower self-esteem. Parents serve as gatekeepers for both home-based and external conversion interventions.

SourceSan Francisco State University·JournalJournal of Homosexuality·DateNov 8, 2018

High-performance solar cells: Physicists grow stable perovskite layers

Researchers at Martin Luther University Halle-Wittenberg develop a method to produce stable perovskite layers, which could lead to high-performance solar cells. The approach uses an industry-wide process to control layer growth, resulting in homogenous and controlled crystals that can withstand elevated temperatures.

SourceMartin-Luther-Universität Halle-Wittenberg·JournalThe Journal of Physical Chemistry Letters·DateNov 8, 2018

Moving the motivation meter

Two novel drugs have been found to restore normal behavior in rats lacking motivation by stimulating a build-up of dopamine in the synapses. This discovery holds promise for treating apathy and fatigue in humans, particularly those suffering from depression or caused by chronic diseases.

Healing kidneys with nanotechnology

A new method for treating and preventing acute kidney injury (AKI) has been developed using tiny, self-assembling forms of DNA origami nanostructures. These nanostructures were shown to protect the kidneys from harm as effectively as the leading drug therapy and alleviate symptoms of AKI.

SourceArizona State University·JournalNature Biomedical Engineering·DateNov 8, 2018

Link between autoimmune, heart disease explained in mice

Studies in mice with psoriasis-like conditions found that stiff blood vessel walls trapped cholesterol, promoting plaques and increasing cardiovascular risk. Neutralizing a specific immune cell type reduced collagen density and cholesterol deposits, suggesting a preventable link between autoimmune diseases and heart disease.

SourceWashU Medicine·JournalCell Metabolism·DateNov 8, 2018

Re-inventing the hook

Researchers found orangutans spontaneously manufactured hook tools out of straight wire, solving a complex problem that eludes young human children. The apes' innovation abilities were tested using a hook-bending task, where they successfully bent and unbent wires to retrieve rewards.

SourceUniversity of Vienna·JournalScientific Reports·DateNov 8, 2018

Molecular inhibition gets cells on the move

A team of researchers at Osaka University has identified the molecular mechanism that enables cells to move in a specific direction. By analyzing the interaction between PTEN and PIP3 molecules, they found that these molecules mutually suppress each other, preventing cells from forming pseudopodia at different ends.

SourceOsaka University·JournalNature Communications·DateNov 8, 2018

Automated detection of sleep states from olfactory brain waves

Researchers create an algorithm that accurately classifies mouse vigilance states into wake, REM sleep, and non-REM sleep based on local brain activity in the olfactory bulb. The study has potential applications in medical and clinical fields, including surgical anesthesia and sleep disorders.

SourcePLOS·JournalPLOS Biology·DateNov 8, 2018

Study demonstrates that long-term follow up in a trauma patient population is achievable

A recent study published in Academic Emergency Medicine demonstrated that long-term follow-up in a trauma patient population is feasible. The study used established contact strategies and various interview locations to track hard-to-reach populations. Researchers suggest exploring newer methods of contacting participants through techno...

SourceSociety for Academic Emergency Medicine·JournalAcademic Emergency Medicine·DateNov 8, 2018

Men focused on muscle building struggle with binge drinking and other problems

A new study from NTNU and Harvard University reveals that young men who strive for an unattainable muscular body are at risk of depression, weekend binge drinking, and disordered eating. The study also shows that over one-third of young men have been on a diet in the past year, unrelated to obesity.

SourceNorwegian University of Science and Technology·JournalInternational Journal of Eating Disorders·DateNov 8, 2018

A buzz-worthy surprise during the total solar eclipse

During the 2017 total solar eclipse, researchers captured a surprising phenomenon: bees stopped buzzing as Earth fell into complete darkness. The study, led by Candace Galen at the University of Missouri, found that bees did not use the unusual darkness as a cue for night and instead flew during periods of reduced light.

SourceUniversity of Missouri-Columbia·JournalAnnals of the Entomological Society of America·DateNov 8, 2018

Blue light can reduce blood pressure

Exposure to whole-body blue light significantly reduces systolic blood pressure by almost 8 mmHg, similar to blood pressure lowering drugs. Blue light also improves other cardiovascular risk markers such as arterial stiffness and increased blood vessel relaxation.

SourceUniversity of Surrey·JournalEuropean Journal of Preventive Cardiology·DateNov 8, 2018

Bees on the brink

A new study led by James Crall at Harvard University found that exposure to neonicotinoid pesticides has profound effects on a host of social behaviors in bees, including reduced nursing of larvae and decreased social interaction. The study also showed that pesticides impair bees' ability to regulate temperatures inside the nest.

SourceHarvard University·JournalScience·DateNov 8, 2018

Species' longevity depends on brain cell numbers

Researchers found that brain cell numbers, not body size or metabolic rate, are the key factors determining maximal longevity in animals. The study suggests that a higher number of cortical neurons leads to longer lifespans and better adaptability.

SourceWiley·JournalJournal of Comparative Neurology·DateNov 8, 2018

ThyroSeq test helps patients avoid unnecessary diagnostic thyroid surgery, study shows

A genetic test called ThyroSeq has been shown to reliably distinguish between benign and cancerous thyroid nodules using a small sample of cells. The test correctly identified cancerous nodules as positive 94% of the time and detected benign nodules as negative 82% of the time, preventing unnecessary diagnostic surgeries.

The Lancet: Latest global disease estimates, combined with health worker shortfall, show that global progress in health is not inevitable

The Global Burden of Disease study reveals that global mortality rates for adults stagnated or worsened in some countries in 2017, with fertility rates declining globally. The report also highlights a shortage of healthcare workers, with half of countries facing a shortfall and only 41 having sufficient physicians to serve their popula...

SourceThe Lancet·JournalThe Lancet·DateNov 8, 2018

Catalyzing CO2

Researchers at Harvard University have developed a new system that captures CO2 from power plants and heavy industry, converting it into industrial fuels with high efficiency. The improved system uses renewable electricity to reduce carbon dioxide into carbon monoxide, addressing the two main challenges of cost and scalability.

SourceHarvard University·JournalJoule·DateNov 8, 2018

Combination chemotherapy and immunotherapy effective in Phase II leukemia study

A Phase II study found a combination of azacitidine and nivolumab therapy resulted in a 33% overall response rate and 22% complete remission rate for patients with relapsed/refractory acute myeloid leukemia. The drug combination was particularly effective in patients who had not previously received hypomethylating agents, with an overa...

How do peptides penetrate cells? Two sides of the same coin

Scientists at IOCB Prague have discovered a previously unknown passive mechanism by which positively charged short peptides can penetrate cells. This process is based on membrane fusion induced by the transported peptides and shares the same mechanistic basis as known processes in neurons during nerve impulses.

Grants aim to give veterans better access to cancer trials

The SWOG Cancer Research Network and The Hope Foundation for Cancer Research provide grant support to U.S. Department of Veterans Affairs medical centers to enroll veterans in cancer clinical trials. This program aims to create a sustainable national network of sites offering new treatment options through clinical trials.

SourceSWOG·DateNov 8, 2018

Genetic 'whodunnit' for cancer gene solved

Researchers at the Salk Institute found that late-stage cancers trigger AMPK's cellular recycling signal to cannibalize cell pieces, supplying large lung tumors with nutrients. Blocking AMPK in some conditions may stop advanced tumor growth.

SourceSalk Institute·JournalCell Metabolism·DateNov 8, 2018

Replaying the tape of life: Is it possible?

A review explores the complexity of evolution's predictability, revealing a mix of contingency and determinism in evolutionary change. The study analyzed various empirical studies to characterize repeatability and contingency in evolution, finding that there is no easy answer to whether history affects the repeatability of evolution.

Powerful method probes small-molecule structures

Researchers have developed a faster and simpler technique to analyze the structures of small molecules, reducing the time needed for X-ray crystallography. This new method, microcrystal-electron diffraction (MicroED), allows scientists to study small-molecule structures at high resolution in under 30 minutes.

SourceAmerican Chemical Society·JournalACS Central Science·DateNov 8, 2018

Why modest goals are so appealing

Research led by INSEAD marketing professors found that people prefer small incremental goals over maintenance goals, even when there is no gap between the starting point and desired state. The brain's negativity bias plays a significant role in this preference, making modest attainment goals more appealing.

SourceINSEAD·JournalOrganizational Behavior and Human Decision Processes·DateNov 8, 2018

Biodiversity draws the ecotourism crowd

Research at Michigan State University found that better biodiversity leads to more tourists visiting protected areas. A 1% increase in biodiversity results in a 0.87% increase in annual visitors. Strategic management and local community participation can enhance economic development and livelihood benefits.

SourceMichigan State University·JournalEcosystem Services·DateNov 8, 2018

Metallic nanocatalysts imitate the structure of enzymes

A team of researchers has successfully replicated the internal channel structures of natural enzymes in metallic nanoparticles, resulting in three times greater catalytic activity. The study focused on the oxygen reduction reaction and found that active centers within the channels enhanced reaction efficiency.

SourceRuhr-University Bochum·JournalJournal of the American Chemical Society·DateNov 8, 2018

Double whammy for grieving spouses with sleep problems

A new study from Northwestern University finds that grieving spouses with sleep problems have a two-to-three times higher risk of chronic immune activation and increased inflammation, making them more susceptible to heart disease or cancer. Cognitive behavioral therapy is highly effective in treating sleep disturbances, and physicians ...

SourceNorthwestern University·JournalPsychosomatic Medicine·DateNov 8, 2018

Biomimetics: The chemical tricks of our blood

Researchers have created phthalocyanines with a ring structure resembling that of hemoglobin or chlorophyll, which can be switched into different states with green light, affecting their chemical behavior. This discovery opens up new avenues for biomimetics and the development of novel molecules optimized for nature-specific applications.

SourceVienna University of Technology·JournalNature Communications·DateNov 8, 2018

Factors affecting turbulence scaling

Researchers investigate turbulence scaling in fluids at critical points, finding anisotropy and compressibility impact scaling behavior. Four types of scaling regimes identified, with anisotropy key to determining emerging behavior.

SourceSpringer·JournalThe European Physical Journal B·DateNov 8, 2018

Eye contact reduces lying

A study from the University of Tampere found that direct eye contact with someone can reduce subsequent lying. In an interactive experiment, participants played a lying game on a computer against another person, with the opponent's gaze being either direct or downward towards their screen.

SourceTampere University·JournalConsciousness and Cognition·DateNov 8, 2018

Top 10 chemistry start-ups

These start-ups are using chemistry to fight disease, control agricultural pests, and make safer lithium-ion batteries. The selected companies have ignited investor interest with their groundbreaking ideas.

SourceAmerican Chemical Society·JournalChemical & Engineering News·DateNov 8, 2018

Pilot study suggests pedal desks could address health risks of sedentary workplace

A recent pilot study by kinesiologists at UMass Amherst found that pedaling while working improved insulin responses to a test meal, with lower insulin levels observed when using a pedal desk compared to a standard desk. The study suggests that pedal desks could be a feasible solution for sedentary work environments.

SourceUniversity of Massachusetts Amherst·JournalMedicine & Science in Sports & Exercise·DateNov 8, 2018

One in 5 homicides of children 2 to 14 years of age is related to intimate partner violence

A new study published in the American Journal of Preventive Medicine found that one in five child homicides may be related to intimate partner violence. The research reveals significant discrepancies between reported data and actual cases, highlighting the need for improved reporting and prevention strategies to save children's lives.

SourceElsevier·JournalAmerican Journal of Preventive Medicine·DateNov 8, 2018

Watch a 3D-engineered human heart tissue beat

Scientists have created a model of the upper chambers of the heart using 3D-engineered human heart tissue, which can serve as a tool for evaluating disease mechanisms and testing new drugs. The tissue is derived from human induced pluripotent stem cells and responds to atrial-selective drugs.

SourceCell Press·JournalStem Cell Reports·DateNov 8, 2018

Culture may explain why brains have become bigger

A study published in PLOS Computational Biology suggests that human brain size increased significantly due to cultural factors and information availability. The cumulative cultural brain hypothesis proposes that brains expand to store and manage more information, co-evolving with group size, learning strategies, and life history.

SourcePLOS·JournalPLOS Computational Biology·DateNov 8, 2018

Waking sleeping plants with plasmas

A team of Saudi Arabian scientists has discovered a way to control dormancy in grapes and other fruiting plants by subjecting them to high-tech plasmas. This method may help extend the cultivation of temperate zone crops to milder climates, mitigating problems caused by global warming.

History of early settlement and survival in Andean highlands revealed by ancient genomes

Researchers uncovered genetic adaptations in ancient Andeans, including cardiovascular modifications and a starch-digesting enzyme variant, allowing them to thrive in the harsh environment. The study suggests that these adaptations enabled highlanders to survive European contact with less population decline than lowlanders.

SourceUniversity of Chicago Medical Center·JournalScience Advances·DateNov 8, 2018

Gatekeeper for poison capsule

A team of researchers has fully unveiled the sophisticated mechanism of bacterial toxins, including the Tc toxin complex used by the plague bacterium and other germs. The study reveals a molecular gatekeeper that controls the poison's exit, offering new insights for developing innovative therapies to combat bacterial infections.

SourceMax-Planck-Gesellschaft·JournalNature·DateNov 8, 2018

Otago study calls for sugar tax

A New Zealand study suggests that sugary drinks contribute to an obesogenic environment, leading people to make unhealthy food choices. The researchers recommend implementing a sugar tax to encourage industry reformulation and individual responsibility for healthy consumption.

SourceUniversity of Otago·JournalPeerJ·DateNov 8, 2018

One million years of precipitation history of the monsoon reconstructed

Scientists have reconstructed the monsoon's precipitation history over the past 1 million years using sediment cores from the eastern Indian Ocean. The results show that the monsoon was weaker during peak ice ages and strongest during interglacial warm periods, with fluctuations in the Earth's axis inclination playing a subordinate role.

SourceHelmholtz Centre for Ocean Research Kiel (GEOMAR)·JournalNature Communications·DateNov 8, 2018

Explaining happiness

A study by researchers at the National Research University Higher School of Economics found that people tend to attribute their happiness to internal factors such as personality traits and control over their lives. However, when they are unhappy, they often blame external factors outside of their control.

SourceNational Research University Higher School of Economics·JournalThe Journal of Positive Psychology·DateNov 8, 2018