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Science News for October 16, 2018


A stabilizing influence enables lithium-sulfur battery evolution

Researchers at Drexel University have developed a stable cathode material that can hold polysulfides in place, maintaining energy density while reducing weight and production time. The new approach uses titanium monoxide nanofibers to immobilize polysulfides, enabling Li-S batteries to achieve superior performance through hundreds of c...

SourceDrexel University·JournalACS Applied Materials & Interfaces·DateOct 16, 2018

Can forests save us from climate change?

A new study published in Nature found that sustainable forest management can only provide modest, local benefits rather than a significant impact on the global climate. Forests themselves will need to be adapted to climate change to sustain their ecological and social services.

SourceAarhus University·JournalNature·DateOct 16, 2018

When it comes to smartphone lifespan, brand name matters more than hardware

A new study by Yale researchers found that brand cache plays a significant role in extending smartphone lifespans, with iPhones lasting up to 67 months compared to Samsung phones' 54.5 months. The study analyzed over 500,000 secondhand phone listings on eBay and found that Apple's brand reputation contributes to its longer lifespan.

SourceYale School of the Environment·JournalJournal of Industrial Ecology·DateOct 16, 2018

Are trigger warnings emotionally protective?

Researchers found that trigger warnings can lead to avoidance and less negative reactions, but those who believe them protective do not feel better. The study used three studies with over 1,300 participants and suggests that more research is needed on the topic.

SourceUniversity of Michigan·JournalJournal of Experimental Social Psychology·DateOct 16, 2018

Experts recommend new way to describe cognitive changes after anesthesia, surgery in elderly patient

Experts recommend changing the way clinicians and patients describe cognitive changes experienced after anesthesia and surgery, particularly in elderly patients. The new nomenclature suggests Perioperative Neurocognitive Disorder (PND), which includes delirium, delayed neurocognitive recovery, and mild or major neurocognitive disorder.

SourceAmerican Society of Anesthesiologists·JournalAnesthesiology·DateOct 16, 2018

RUDN physicist described the shape of a wormhole

A RUDN physicist has demonstrated how to calculate the shape of a symmetrical wormhole based on its wave spectrum, providing new insights into the physics of black holes. The research uses quantum mechanical and geometrical assumptions to determine the shape and mass of a wormhole from observable properties such as red shift.

SourceRUDN University·JournalPhysics Letters B·DateOct 16, 2018

Do lovers always tease each other? Study shows how couples handle laughter and banter

Couples who handle laughter and being laughed at similarly tend to be more content in their relationship. However, being afraid of being laughed at can have negative effects on relationship satisfaction and trust. Researchers found that those who enjoy laughing about others but not being laughed at often argue more frequently.

SourceMartin-Luther-Universität Halle-Wittenberg·JournalJournal of Research in Personality·DateOct 16, 2018

New memristor boosts accuracy and efficiency for neural networks on an atomic scale

Researchers demonstrate a new type of compound synapse that can achieve synaptic weight programming and conduct vector-matrix multiplication, achieving accuracies up to five times those of conventional devices. The development uses atomically thin boron nitride memristors running in parallel for energy-efficient performance.

SourceAmerican Institute of Physics·JournalJournal of Applied Physics·DateOct 16, 2018

Looking and listening for signals of navy test explosions off Florida coast

A team of researchers analyzed seismic and acoustic data from US Navy explosions off the Florida coast to better understand the relationship between local magnitude and charge weight. They found that both types of data can be used to identify underwater explosions, with seismic signals providing clearer evidence.

SourceSeismological Society of America·JournalBulletin of the Seismological Society of America·DateOct 16, 2018

Infants are more likely to learn when with a peer

A new study found that infants who viewed instruction with a peer showed better neural response and improved phonemic learning compared to those who watched alone. The researchers suggest that social interaction increases arousal, which in turn boosts learning, and provide motivation for acquiring new skills.

SourceUniversity of Connecticut·JournalProceedings of the National Academy of Sciences·DateOct 16, 2018

The science of sustainability

A new study presents a unified path for development and conservation, considering the needs of both people and nature. By using leading projections and aligning with the UN's Sustainable Development Goals, researchers envision a world in 2050 where human well-being and nature thrive together.

SourceUniversity of Colorado at Boulder·JournalFrontiers in Ecology and the Environment·DateOct 16, 2018

Just how blind are bats? Color vision gene study examines key sensory tradeoffs

A new study reveals that bats' loss of UV vision may be linked to the development of advanced echolocation abilities. The research found that most bat species with high-duty cycle echolocation have non-functional SWS1 genes, suggesting a trade-off between vision and hearing.

Sydney to move away from CBD model

A recent study suggests that Sydney's urban structure is shifting from a monocentric city to a polycentric model, with populations aggregating around existing major urban areas. The study found that social cohesion and residential suburb attractiveness are key factors in driving this change.

SourceUniversity of Sydney·JournalRoyal Society Open Science·DateOct 16, 2018

Forest carbon stocks have been overestimated for 50 years

Researchers at CIRAD found an incoherence in a conversion factor for calculating basic wood density, leading to potential errors in estimating forest carbon stocks. The corrected formula will improve the accuracy of forest carbon assessments and understanding of forests' role in climate regulation.

SourceCirad·JournalAmerican Journal of Botany·DateOct 16, 2018

'Terrorism does not terrorize' claims new study

A major review of 400 research articles found no significant association between acts of terrorism and post-traumatic stress disorder (PTSD), suggesting that 'terrorism isn't terrorising' in terms of causing increased PTSD. The study argues that the focus on PTSD has overshadowed other impacts, such as social and economic effects.

SourceUniversity of Bath·JournalThe Lancet Psychiatry·DateOct 16, 2018

True sanctuary

Researchers found high levels of illegal shark fishing in a Marshall Islands shark sanctuary, highlighting the need for active monitoring and enforcement. Satellite technology is proposed as a solution to track fishing vessels and monitor compliance with fishing regulations.

SourceUniversity of California - Santa Barbara·JournalConservation Letters·DateOct 16, 2018