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Science News Archive August 2017 - Page 15


Page 15 of 41

High moral reasoning associated with increased activity in the human brain's reward system

A new study from Penn researchers found a strong association between high moral reasoning and increased activity in the brain's reward system. This link suggests that positive motivations towards others play a crucial role in moral reasoning development, with higher levels of morality linked to more advanced principles and ethical rules.

SourceUniversity of Pennsylvania School of Medicine·JournalScientific Reports·DateAug 22, 2017

Does a mother's pre-pregnancy weight determine her child's metabolism?

A study found associations between parental BMIs and offspring metabolic traits, but the link was not significantly stronger for maternal BMI, arguing against an intra-uterine mechanism. After accounting for offspring BMI, the data suggested that familial factors rather than intra-uterine overnutrition explain the relationship.

SourcePLOS·JournalPLOS Medicine·DateAug 22, 2017

How a bacterium can live on methanol

A team of scientists has identified all the genes required for Methylobacterium extorquens to live on methanol. The bacterium can use either larger carbon molecules or methanol from plants as a nutrient, depending on availability.

SourceETH Zurich·JournalCurrent Biology·DateAug 22, 2017

An echo from the past to the future on abrupt seasonal changes of the general circulation

A recent paper revisits an idea proposed by Chinese meteorologist Duzheng Yeh in 1959 about abrupt seasonal changes in the general circulation. The study's authors successfully reproduce these transitions without lower-boundary inhomogeneities, sparking questions about their underlying causes.

SourceInstitute of Atmospheric Physics, Chinese Academy of Sciences·JournalAdvances in Atmospheric Sciences·DateAug 22, 2017

Close friendships in high school predict improvements in mental health in young adulthood

A new longitudinal study suggests that high-quality friendships during adolescence can predict better mental health outcomes in young adulthood. Teens with stronger close friendships tend to experience lower social anxiety and increased self-worth, while those who are popular in high school may be more prone to social anxiety later on.

SourceSociety for Research in Child Development·JournalChild Development·DateAug 22, 2017

Is childhood obesity a psychological disorder?

A recent study published in NeuroImage found that adolescents at risk for obesity have reduced neural activity in attention and self-regulation circuits. The researchers used fMRI to investigate the relationship between neurological activity and risk for obesity, suggesting that interventions targeting self-regulatory systems may be a ...

SourceChildren's Hospital Los Angeles·JournalNeuroImage·DateAug 22, 2017

Firing of neurons changes the cells that insulate them

A new study published in PLOS Biology reveals that different firing patterns of neurons alter proliferation and differentiation of oligodendrocyte precursors, which provide insulation to neuronal axons. The findings suggest a complex interplay between neurons and non-neuronal cells supporting them.

SourcePLOS·JournalPLOS Biology·DateAug 22, 2017

How cytoplasm 'feels' to a cell's components

Engineers at MIT found that organelles like mitochondria and lysosomes encounter different types of resistance in cytoplasm based on size and speed. The researchers developed a phase diagram to describe the material properties of cytoplasm from an organelle's perspective, which may aid in pharmaceutical designs.

SourceMassachusetts Institute of Technology·JournalProceedings of the National Academy of Sciences·DateAug 22, 2017

In Neptune, it's raining diamonds

Scientists at Helmholtz-Zentrum Dresden-Rossendorf simulated the conditions inside Neptune and found diamonds forming in real time using an ultra-strong X-ray laser. The study provides insights into the planet's chemical makeup and has potential applications for electronic instruments, medical procedures, and industrial production.

SourceHelmholtz-Zentrum Dresden-Rossendorf·JournalNature Astronomy·DateAug 21, 2017

Our brains do change from early to mid-adulthood

Researchers found significant microstructural changes in brain structure from early to mid-adulthood, allowing for accurate age estimation. These changes were associated with cognitive decline and disease, but the link to old-age cognitive decline is unclear.

SourceFrontiers·JournalFrontiers in Human Neuroscience·DateAug 21, 2017

Dino-killing asteroid could have thrust Earth into 2 years of darkness

Scientists estimate that a massive asteroid impact could have triggered 2 years of darkness on Earth, shutting down photosynthesis and drastically cooling the planet. The research found that soot in the atmosphere would have blocked sunlight, causing a steep decline in average temperatures.

SourceNational Center for Atmospheric Research/University Corporation for Atmospheric Research·JournalProceedings of the National Academy of Sciences·DateAug 21, 2017

Hidden river once flowed beneath Antarctic ice

A Rice University study reveals that flowing liquid water below the Antarctic ice appears to play a pivotal role in determining the fate of Antarctic ice streams. The research used sediment cores and precise seafloor maps to uncover an extensive, uncovered, water-carved channel connected to subglacial lakes.

SourceRice University·JournalNature Geoscience·DateAug 21, 2017

CHEO researchers identify practices leading to safer outcomes in procedural sedation for children

Researchers at CHEO identified sedation medications and practices associated with the best clinical outcomes, making ketamine-alone a logical choice for providing procedural sedation to children. The study found that choice of sedation medication had the biggest impact on the incidence of adverse events.

Post-whaling recovery of Southern Hemisphere

Researchers use complex ecosystem model to predict whale numbers by 2100, finding some species will not recover, while others like humpbacks are expected to make full recovery. Southern Hemisphere whaling has led to slow growth rates and reduced populations in several species.

SourceCSIRO Australia·JournalFish and Fisheries·DateAug 21, 2017