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Science News for December 9, 2019


Killer whale grandmothers boost survival of calves

Post-menopausal killer whale grandmothers improve the chances of survival for their grand-calves, allowing them to focus time and resources on the latest generation. The study found that these grandmothers played a particularly important role in times of food scarcity, where salmon was scarce.

SourceUniversity of York·JournalProceedings of the National Academy of Sciences·DateDec 9, 2019

How playing the drums changes the brain

Researchers found that professional drummers have fewer but thicker fibres in the corpus callosum, a brain structure responsible for motor planning. This leads to more efficient brain organisation and better performance in drumming tasks. The study also revealed that drummers' brains are less active in motor tasks.

SourceRuhr-University Bochum·JournalBrain and Behavior·DateDec 9, 2019

Navigating navigating land and water

Researchers at Tohoku University have cracked the code of centipedes' flexible motor control mechanism, enabling them to walk on land and swim in water. The study's findings will aid in developing robots that can adapt to various environments.

SourceTohoku University·JournalScientific Reports·DateDec 9, 2019

The genetic signature of memory

A recent study identified distinct gene signatures associated with memory creation, found in cortical and subcortical regions of the brain. These genes play crucial roles in memory processes, immune signaling, neuronal generation, and mRNA production.

SourceSociety for Neuroscience·JournaleNeuro·DateDec 9, 2019

Medicaid expansion doubled access to primary care, increased attention to health risks

The Michigan Medicaid expansion program successfully doubled access to primary care and increased the discussion of healthy behaviors among low-income residents. According to new studies, nearly 90% of enrollees reported reduced stress and worry due to HMP coverage, with many going without dental care they needed before enrollment.

SourceMichigan Medicine - University of Michigan·JournalJournal of General Internal Medicine·DateDec 9, 2019

When penguins ruled after dinosaurs died

A newly discovered penguin species, Kupoupou stilwelli, found on Chatham Island has proportions close to its modern relatives, indicating it waddled on land. The 62.5-60 million-year-old fossil provides insight into the evolution of early penguins and their adaptation to subtropical seas.

SourceFlinders University·JournalPalaeontologia Electronica·DateDec 9, 2019

Storing data in everyday objects

Scientists create 'DNA of Things' technology, storing 3D-printing instructions and other data in everyday objects like plastic rabbits. The method uses DNA molecules, allowing for secure information transfer and hiding in everyday items like glasses or construction materials.

SourceETH Zurich·JournalNature Biotechnology·DateDec 9, 2019

Separating drugs with MagLev

The MagLev method uses magneto-Archimedes levitation to separate and isolate different drugs from sample mixtures, allowing for precise identification. The technique can distinguish between up to seven substances simultaneously and has the potential to complement or replace existing portable drug identification techniques.

SourceWiley·JournalAngewandte Chemie International Edition·DateDec 9, 2019

Genomic cut and paste using a Class 1 CRISPR system

Japanese researchers have developed a Class 1 CRISPR gene editing system that enables efficient DNA repairs in human cells with minimal off-target effects. The Cas3 protein-based approach achieves superior genome editing efficiency compared to traditional Class 2 systems, opening doors for new therapeutic applications.

SourceOsaka University·JournalNature Communications·DateDec 9, 2019

You create your own false information, study finds

A new study from Ohio State University found that people tend to misremember numerical statistics on controversial issues to align with their existing beliefs. When presented with accurate data, participants often flip or distort the numbers to match their preconceptions, even when they're correct.

SourceOhio State University·JournalHuman Communication Research·DateDec 9, 2019

Finding the smallest genes could yield outsized benefits

A study from the Salk Institute identified over 2,000 previously unknown small open reading frames (smORFs) in human cell lines, expanding the number of human genes by 10%. These tiny genetic sequences may hold key to understanding human biology and developing new treatments for diseases like cancer and diabetes.

SourceSalk Institute·JournalNature Chemical Biology·DateDec 9, 2019

Identification of a key protein linked to ageing

Scientists from Institut Pasteur have identified a key protein associated with ageing, which is progressively depleted in cells leading to senescence. The discovery sheds light on the mechanisms of senescence and its link to cellular ageing, paving the way for potential therapeutic targets.

SourceInstitut Pasteur·JournalNature Communications·DateDec 9, 2019

Aspirin's health benefits under scrutiny

A new study suggests that taking aspirin daily to prevent a heart attack or stroke may no longer be recommended for adults without a history of these events. The study found that the potential benefits of aspirin are similar to its potential harms for most people, highlighting the need for personalized advice from doctors.

SourceUniversity of Georgia·JournalFamily Practice·DateDec 9, 2019

Urban growth causes more biodiversity loss outside of cities

Researchers found that direct urban expansion leads to significant habitat destruction, but the broader environmental impacts of urbanization are much greater, with climate change and land-use change driving global biodiversity loss. The study highlights the need for more research on indirect effects in developing countries.

How planets may form after dust sticks together

Researchers found that particles in microgravity develop strong electrical charges and stick together, forming large aggregates. This process helps explain how asteroids and planets form in outer space. The study also identifies new approaches for controlling fine particle aggregation in industrial processing.

SourceRutgers University·JournalNature Physics·DateDec 9, 2019

New clues to the link between ALS and type 2 diabetes

A study by Karolinska Institutet researchers identifies a molecular mechanism linking ALS and type 2 diabetes, where immunoglobulin G antibodies target calcium channels in pancreatic beta cells, leading to cell death. The findings suggest altered humoral immunity may be a generalized phenomenon for other neurodegenerative diseases.

SourceKarolinska Institutet·JournalProceedings of the National Academy of Sciences·DateDec 9, 2019

Lactobacillus balances gut microbiome and improves chronic-alcohol-induced liver injury

Researchers found that Lactobacillus rhamnosus can restore a balanced intestinal microbiome and counter liver damage caused by chronic alcohol consumption. The probiotic effect of the bacteria reduced inflammation and fat accumulation in the liver, indicating potential therapeutic applications for alcohol-induced liver disease.

SourceMary Ann Liebert, Inc./Genetic Engineering News·JournalJournal of Medicinal Food·DateDec 9, 2019

Review Commons, a pre-journal portable review platform

Review Commons, launched by ASAPbio and EMBO Press, enables high-quality pre-journal peer review of manuscripts from the life sciences. This platform empowers authors to make informed decisions on paper submission and expedites submission to affiliate journals without restarting reviews.

SourceEMBO·JournalThe EMBO Journal·DateDec 9, 2019

How Enceladus got its stripes

The study investigates the physical forces acting on Enceladus that allow the tiger stripe fissures to form and remain in place. The researchers found that the fissures could have formed on either pole, but the south pole's unique deformation led to their formation.

SourceCarnegie Institution for Science·JournalNature Astronomy·DateDec 9, 2019

Road salt pollutes lake in one of the largest US protected areas, new study shows

A new study by the Ausable River Association and Adirondack Watershed Institute reveals that road salt runoff into Mirror Lake prevents natural water turnover, posing a risk to its ecology. The researchers found that high levels of surface-water chloride have created anoxic conditions, limiting habitat availability for native lake trout.

SourceTaylor & Francis Group·JournalLake and Reservoir Management·DateDec 9, 2019

Proton-hydrogen collision model could impact fusion research

A new theoretical model predicts how protons will collide with hydrogen atoms in high-energy collisions, validating some previous conclusions while revealing discrepancies. The model has the potential to advance our understanding of plasma behavior and its application in realizing clean energy sources.

SourceSpringer·JournalThe European Physical Journal D·DateDec 9, 2019

Bridge protection in catastrophic earthquakes

Researchers at University of Technology Sydney developed a novel ground anchor technology to protect bridges against catastrophic earthquakes. The system uses high-tensile capacity steel cables, embedded into the ground behind the bridge, to deliver incredible strength and energy dissipation.

SourceUniversity of Technology Sydney·JournalSoil Dynamics and Earthquake Engineering·DateDec 9, 2019

Russian astrophysicists discovered a neutron star with an unusual magnetic field structure

Scientists have discovered a unique neutron star with an apparent magnetic field structure that manifests itself under specific angles relative to the observer. The study provides insight into the internal structure of the magnetic field, contradicting earlier assumptions and revealing new properties of neutron stars.

SourceMoscow Institute of Physics and Technology·JournalThe Astrophysical Journal Letters·DateDec 9, 2019

Have your health and eat meat too

Researchers from the University of South Australia have developed a new version of the Mediterranean diet incorporating lean pork, which delivers cognitive benefits while catering to Western tastes. The Med-Pork diet outperforms low-fat diets in delivering higher cognitive processing speeds and emotional functioning.

SourceUniversity of South Australia·JournalNutrients·DateDec 9, 2019

Research shows ramping up carbon capture could be key to mitigating climate change

A new study published in Nature Scientific Reports suggests that increasing carbon capture and storage (CCS) technology could play a significant role in reducing greenhouse gas emissions. The research estimates that there is enough space in the world's nearshore continental margins to store 6-7 gigatons of CO2 annually by 2050, and tha...

SourceUniversity of Texas at Austin·JournalScientific Reports·DateDec 9, 2019

Has physics ever been deterministic?

Researchers propose an alternative view of classical physics, suggesting that the future of an object is genuinely random after a certain number of interactions. This challenges the traditional view of determinism in classical physics and opens up new insights on the relationship between classical and quantum physics.

SourceUniversity of Vienna·JournalPhysical Review A·DateDec 9, 2019

Sport-related concussions

A study by Dr. Ingo Helmich and his team found significant differences in non-verbal gestures and behavior between athletes with and without concussion, providing a new tool for improving diagnosis. These findings suggest that motion quality presentation gestures can offer insight into post-concussion motor sensory experience.

SourceGerman Sport University·JournalJournal of Science and Medicine in Sport·DateDec 9, 2019

'Safety signals' may help slow down anxiety

Researchers at Yale University discovered that safety signals, such as symbols or sounds not associated with danger, can relieve anxiety. This approach differs from behavioral therapy and may be an effective way to augment current therapies for anxiety-related disorders.

SourceYale University·JournalProceedings of the National Academy of Sciences·DateDec 9, 2019

Creating switchable plasmons in plastics

Scientists at Linköping University develop optical nanoantennas made from a conducting polymer, allowing for controllable nano-optical components. The antennas react to light and can be switched on and off, making them suitable for applications such as smart windows.

SourceLinköping University·JournalNature Nanotechnology·DateDec 9, 2019

Detours may make batteries better

Scientists at Rice University have discovered that placing specific defects in the crystalline lattice of lithium iron phosphate-based cathodes can broaden the avenues through which lithium ions travel. This could improve performance by up to two orders of magnitude and potentially lead to similar improvements in other types of batteries.

SourceRice University·Journalnpj Computational Materials·DateDec 9, 2019