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Science News for October 30, 2017


Are the grandkids worth it? Climate change policy depends on how we value human population

A new study finds that reducing greenhouse gas emissions to protect future generations from environmental destruction could save tens of billions of dollars annually, especially in wealthier countries. By valuing human population differently, policymakers can make more informed decisions about climate policy.

SourcePrinceton School of Public and International Affairs·JournalProceedings of the National Academy of Sciences·DateOct 30, 2017

Sight unseen

Researchers analyzed over 600 drug and breast cancer cell pairings, revealing significant changes in gene expression without affecting cell growth or survival. The study identified potential synergistic combinations of drugs, including trametinib and alpelisib, to overcome adaptive resistance mechanisms.

SourceHarvard Medical School·JournalNature Communications·DateOct 30, 2017

The advent of 'green' cattle

A new method of carbon footprinting for pasture-based cattle production systems can identify 'green' cattle within a herd, reducing greenhouse gas emissions. The study found that existing methods underestimates the impacts of poorly performing animals, which produce disproportionately large amounts of methane.

SourceUniversity of Bristol·JournalJournal of Cleaner Production·DateOct 30, 2017

UNIST unveils new fast-charging, high-energy electric-car battery technology

Researchers at UNIST have developed a novel hydrogen isotope separation system based on porous metal organic frameworks, exhibiting the highest selectivity to date. The system can efficiently separate and store deuterium, with a separation factor of 26, making it more cost-effective than cryogenic distillation methods.

SourceUlsan National Institute of Science and Technology(UNIST)·JournalJournal of the American Chemical Society·DateOct 30, 2017

Voltage-driven liquid metal fractals

Researchers at North Carolina State University have discovered that applying low voltage to gallium indium can induce the formation of unique fractal patterns. The discovery has significant implications for controlling liquid metals, as it allows for reversible and effective manipulation of surface tension.

SourceNorth Carolina State University·JournalPhysical Review Letters·DateOct 30, 2017

Microscopic defects make batteries better

Researchers found that microscopic defects in electrodes enable lithium to hop inside the cathode along multiple directions, increasing reactive surface area and allowing for more efficient exchange of lithium ions. This discovery challenges traditional thinking on how electrode shape should be optimized for battery performance.

SourceRice University·JournalNature Communications·DateOct 30, 2017

Nanoscale platform aims to control protein levels

Rice University scientists invented a bifunctional recognition system called NanoDeg to target specific proteins and regulate their degradation. This plug-and-play system allows for precise control over protein expression levels, enabling the study of cellular dynamics and synthetic gene circuits.

SourceRice University·JournalACS Synthetic Biology·DateOct 30, 2017

Sulfur respiration in mammals

Researchers identified a sulfur metabolite with antioxidant activity that supports mitochondrial energy metabolism, a crucial process for cellular function. This finding highlights the potential of enzymes involved in sulfur respiration to treat diseases such as diabetes and cardiovascular disease.

SourceTohoku University·JournalNature Communications·DateOct 30, 2017

Moving neuroscience into the fast lane

A new high-throughput system enables rapid and standardized mouse behavior and physiology studies, reducing experimental animal usage and time requirements. The system aims to facilitate reproducibility and data sharing, addressing issues of varying training protocols and data comparison across labs.

SourceRIKEN·JournalNature Communications·DateOct 30, 2017

AUGS publishes best practice statement on pelvic organ prolapse

The American Urogynecologic Society (AUGS) has published a Best Practice Statement on pelvic organ prolapse, emphasizing the importance of proper evaluation and counseling for women. The statement outlines treatment options, including physical therapy, pessaries, and surgery, tailored to individual patient needs.

SourceCare New England·JournalFemale Pelvic Medicine & Reconstructive Surgery·DateOct 30, 2017

Willingness to take risks -- a personality trait

Researchers found a stable general factor of risk preference that affects decisions across different areas of life. This trait shares the psychometric structure of major psychological characteristics and can be measured using self-reports and frequency measures of actual risky activities.

SourceUniversity of Basel·JournalScience Advances·DateOct 30, 2017

Scientists discover surprising immune cell activity that may be limiting immunotherapy

Treg cells suppress immune function, but eliminating them doesn't eliminate their effects. In fact, dying Tregs release metabolites that affect T-cells, making them unhealthy and reducing the cancer-fighting effect of immunotherapy. The study suggests a new approach to limit this function and block the suppressive activity.

SourceMichigan Medicine - University of Michigan·JournalNature Immunology·DateOct 30, 2017

Group exercise improves quality of life, reduces stress far more than individual work outs

A study published in the Journal of the American Osteopathic Association found that group exercise significantly improved mental, physical, and emotional quality of life, with a 26% reduction in stress levels. In contrast, individual workouts had no significant impact on stress levels or quality of life.

SourceAmerican Osteopathic Association·JournalThe Journal of the American Osteopathic Association·DateOct 30, 2017

Results from the EXCEL QOL study reported at TCT 2017 and published simultaneously in JACC

Patients with left main coronary artery disease (LMCAD) who underwent percutaneous coronary intervention (PCI) or coronary artery bypass graft surgery (CABG) showed similar quality of life improvements at three years. PCI demonstrated a greater early benefit, with improved health status measures that were sustained over time.

SourceCardiovascular Research Foundation·JournalJournal of the American College of Cardiology·DateOct 30, 2017

The Lancet: Health impacts of climate change already felt today, as transition to low-carbon society must gain faster pace

The Lancet Countdown report reveals that climate change is having a significant impact on health, with 125 million adults over 65 exposed to heatwaves, and an estimated 5.3% loss in labour productivity. The report also highlights the increase in mosquito-borne diseases, air pollution, and economic losses linked to extreme weather events.

SourceThe Lancet·JournalThe Lancet·DateOct 30, 2017

Spider silk could be used to power microphones in hearing aids, cell phones

Researchers at Binghamton University have developed a new type of microphone that uses spider silk to improve directional sensing across a wide range of frequencies. The study, led by Professor Ron Miles and graduate student Jian Zhou, found that the fine fibers are able to pick up velocity rather than pressure of air waves.

SourceBinghamton University·JournalProceedings of the National Academy of Sciences·DateOct 30, 2017

Under pressure

Climate change and human activities are putting North Atlantic right whales under immense pressure, with food scarcity and high mortality rates exacerbating their decline. The study predicts population growth will be hindered by climate-mediated food availability and policy-driven mortalities.

SourceUniversity of California - Santa Barbara·JournalGlobal Change Biology·DateOct 30, 2017

Wristband devices detect dangerous seizures in patients with epilepsy

New research published in Epilepsia indicates that wristband devices can improve the detection and characterization of seizures in patients with epilepsy. The devices detected 95% of seizures while keeping false alarm rates at a bearable level, providing real-time alerts to caregivers and improving patients' quality of life.

SourceWiley·JournalEpilepsia·DateOct 30, 2017

Depression is on the rise in the US, especially among young teens

Researchers at Columbia University's Mailman School of Public Health found a significant increase in depression among Americans aged 12 and older from 2005 to 2015. The prevalence of past-year depression rose from 6.6% to 7.3%, with the most rapid increases seen in young people and those with lower levels of income and education.

Immigrants living in the country without authorization at risk for anxiety and depression

A new study by Rice University found that nearly a quarter of Mexican immigrants living near the California-Mexico border without legal authorization have a mental disorder, with major depressive disorder, panic disorder, and generalized anxiety disorder being the most prevalent. The study's findings highlight the need for culturally s...

SourceRice University·JournalJournal of Consulting and Clinical Psychology·DateOct 30, 2017

Political views have limited impact on how we perceive climate anomalies, study finds

A new study by researchers at the University of Oklahoma and Oklahoma State University found that individual perceptions of climate anomalies are largely immune to political bias. The study used high-resolution data and address-based panel survey to examine how people in Oklahoma perceived climate anomalies, including extremes of tempe...

SourceIOP Publishing·JournalEnvironmental Research Letters·DateOct 30, 2017

Building a sustainable future: Urgent action needed

A new report highlights the need for sustainable solutions to address growing energy demands from emerging middle classes. The study finds that adoption rates of energy-efficient materials and technologies vary greatly across countries due to differences in climate, economic power, and public perception on climate change.

SourceCambridge University Press·JournalMRS Energy & Sustainability·DateOct 30, 2017

Research aims to help renewable jet fuel take flight

University of Delaware researchers have developed catalysts that transform lignocellulosic biomass into high-carbon molecules suitable for jet fuel, enabling cost-competitive and sustainable production. The process operates at low temperature and is scalable, addressing the need for non-petroleum-based fuels for aviation.

SourceUniversity of Delaware·JournalChemSusChem·DateOct 30, 2017