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Science News for March 30, 2017


Methane emissions from trees

Researchers from the University of Delaware found that tree trunks in upland forests emit methane, while soils and coarse woody debris act as methane sinks. The study used state-of-the-art technology to measure fluxes of methane and carbon dioxide, revealing a previously unaccounted source of this potent greenhouse gas.

SourceUniversity of Delaware·JournalEcosystems·DateMar 30, 2017

Proteins that can take the heat

Researchers studied 15 thioredoxin proteins, including extinct sequences, to understand how they unfold at different temperatures. They found that proteins with similar structure but greater ability to tolerate heat unfold more slowly, making them useful for industrial processes.

SourceRensselaer Polytechnic Institute·JournalProceedings of the National Academy of Sciences·DateMar 30, 2017

Internet crystal ball can predict risk of heart disease, diabetes, study finds

A new online metabolic calculator developed by a University of Virginia doctor predicts patients' risk of developing heart disease and diabetes with higher accuracy than traditional methods. The tool takes into account multiple factors, including obesity, high blood pressure, and ethnicity, to provide a more comprehensive risk assessment.

SourceUniversity of Virginia Health System·JournalJournal of the American College of Cardiology·DateMar 30, 2017

Satellite galaxies at edge of Milky Way coexist with dark matter, says RIT study

A new RIT study confirms the coexistence of satellite galaxies and dark matter, shedding light on a long-standing debate. The research supports the current cosmological paradigm by showing that the vast polar structure of dwarf galaxies is an unstable feature that formed later in the galaxy's evolution.

SourceRochester Institute of Technology·JournalMonthly Notices of the Royal Astronomical Society·DateMar 30, 2017

What happens in the living cell?

Researchers have designed a molecular 'paintbrush' technique to trigger, control, and monitor cellular processes. The technology, called Molecular Activity Painting, uses light-activated molecular building blocks to induce patterned contractions in living cells.

SourceWiley·JournalAngewandte Chemie International Edition·DateMar 30, 2017

Sculpting optical microstructures with slight changes in chemistry

Applied mathematicians at Harvard John A. Paulson School of Engineering and Applied Sciences developed a framework to better understand and control the fabrication of optical microstructures. The researchers used this framework to grow sophisticated optical microcomponents, including resonators, waveguides, and beam splitters.

'Fuzzy' fibers can take rockets' heat

The new composite fibers, developed in collaboration with NASA, have strong interlocking connections that make them less prone to cracking and seal the material to prevent oxygen from changing its chemical composition. The fibers are also resistant to high temperatures and can make entire turbo engines significantly lighter.

SourceRice University·JournalACS Applied Materials & Interfaces·DateMar 30, 2017

Glacier photos illustrate climate change

A team of experts presents exceptional photographs documenting the loss of ice across Earth's surface. The images showcase the devastating effects of climate change on glaciers, a consequence of anthropogenic carbon emissions. GSA Today article highlights the urgent need for action to address this issue.

SourceGeological Society of America·JournalGSA Today·DateMar 30, 2017

Welfare reform that really works

Researchers found that introducing dynamic tax/sanctions and work subsidies can help people commit to long-run goals, leading to increased employment and welfare participation rates. In contrast, focusing on short-term payoffs results in reduced earnings and government expenditure.

SourceOxford University Press USA·JournalThe Review of Economic Studies·DateMar 30, 2017

The US burden of neurological disease is nearly $800 billion/year

The US burden of neurological disease is estimated to be nearly $800 billion/year, with costs projected to grow as the elderly population doubles between 2011 and 2050. The American Neurological Association commissioned a study detailing the annual cost of nine key neurological diseases and disorders.

SourceWiley·JournalAnnals of Neurology·DateMar 30, 2017

Sleep-inducing herb: The key component identified

A study found that triethylene glycol (TEG), an active component of Ashwagandha, induces non-rapid eye movement sleep significantly and changes rapid eye movement sleep slightly. TEG's physiologically sound sleep is comparable to normal sleep, offering a potential natural solution for insomnia and related disorders.

SourceUniversity of Tsukuba·JournalPLOS ONE·DateMar 30, 2017

Gender-affirming restrooms recommended for schools

Research by Fordham University found that gender-neutral restrooms in schools have a significant impact on the overall school security, self-esteem, and grades of trans students. The study also highlighted demographic disparities by gender, race, and sexual orientation in school facilities.

SourceSpringer·JournalJournal of Youth and Adolescence·DateMar 30, 2017

The beginning of the end of order

Researchers at the University of Konstanz have proven the existence of Mermin-Wagner fluctuations, which grow logarithmically with system size and prevent crystal formation over long ranges. In contrast, small systems can exhibit crystal formation.

SourceUniversity of Konstanz·JournalProceedings of the National Academy of Sciences·DateMar 30, 2017

Nanomagnets for future data storage

Researchers at ETH Zurich have developed a method to create nanoparticles with dysprosium atoms that can be magnetised and maintain their magnetic information. The scientists are now looking to stabilise the magnetisation at higher temperatures and longer periods of time.

SourceETH Zurich·JournalACS Central Science·DateMar 30, 2017

Link between common prostate cancer treatment, dementia detailed in new Penn study

A new study analyzing over 50,000 patients with prostate cancer reveals a significant link between androgen deprivation therapy and dementia risk, suggesting that long-term use of this therapy may impact brain function. The findings also hint at a possible association between the treatment and Alzheimer's disease.

SourceUniversity of Pennsylvania School of Medicine·JournalProstate Cancer and Prostatic Diseases·DateMar 30, 2017

Different databases, differing statistics on racial disparities in immediate breast reconstruction after mastectomy

A study analyzing data from three national databases found significant racial gaps in immediate breast reconstruction (IBR) after mastectomy, with white patients having the highest rate of IBR. The disparities were similar among women with ductal carcinoma in situ (DCIS), and were up to 50% in California.

SourceWolters Kluwer Health·JournalPlastic & Reconstructive Surgery·DateMar 30, 2017

Follow-up study suggests group meditation reduced murder rates in large US cities

A recent study found that group meditation using the Transcendental Meditation program significantly reduced urban murder rates in large US cities, with an estimated 4,136 murders averted between 2007-2010. The reductions were consistent with the hypothesis that a sufficiently large group practice creates a positive effect on society.

SourceMaharishi International University·JournalJournal of Health and Environmental Research·DateMar 30, 2017

Brain's role in Tourette tics simulated in new computational model

A new computational model simulates the role of the brain in Tourette syndrome, suggesting that motor tics arise from interactions between multiple brain areas. The model predicts how dysfunctions in neural circuits can lead to an increased number of tics, which could aid in identifying new treatment targets.

SourcePLOS·JournalPLOS Computational Biology·DateMar 30, 2017

Donor-recipient weight and sex mismatch may contribute to kidney transplant failure

A new study reveals that a higher risk of transplant failure is associated with a 28% increase in weight compared to the donor, as well as a 35-50% relative risk for opposite-sex kidney transplants. This highlights the importance of considering donor and recipient matching beyond current immunology-based protocols.

SourceAmerican Society of Nephrology·JournalClinical Journal of the American Society of Nephrology·DateMar 30, 2017

Immune suppressant ineffective in treating leprosy inflammation

Researchers randomized 345 patients with type 1 reactions to receive either prednisone or prednisone plus azathioprine for varying durations. While all groups showed some improvement in symptoms, azathioprine failed to reduce recurrence rates or improve outcomes for nerve damage compared to standard treatment.

SourcePLOS·JournalPLOS Neglected Tropical Diseases·DateMar 30, 2017

Brain's 'GPS' does a lot more than just navigate

Researchers at Princeton University found that the brain's hippocampus plays a broader role in memory and learning, involved in both spatial navigation and cognitive tasks. The study used rats to explore sound frequencies and showed similar neural activity patterns as those seen when navigating physical environments.

SourcePrinceton University·JournalNature·DateMar 30, 2017

Researchers watch blood vessels develop in whole Zebrafish embryos

Researchers have successfully visualized the development of blood vessels in zebrafish embryos without labels or contrast agents, enabling better understanding of brain and cardiovascular diseases. The new study uses optical resolution photoacoustic microscopy to provide three-dimensional images with high spatial resolution.

SourceOptica·JournalBiomedical Optics Express·DateMar 30, 2017