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Science News Archive February 2019 - Page 7


Page 7 of 40

A disconnect between migrants' stories and their health

A small Ohio State University study found a disconnect between Mexican immigrants' positive accounts of living in the US and their physical signs of stress, such as high blood pressure and obesity. The researchers believe these migrants use positive narratives to cope with discrimination and stress.

SourceOhio State University·JournalJournal of PHYSIOLOGICAL ANTHROPOLOGY·DateFeb 25, 2019

Cost and performance of fuel cells

According to a study of expert assessments, the current cost of proton exchange membrane fuel cells is unlikely to meet US Department of Energy targets by 2020. Experts identify catalytic metals as a significant barrier to cost reduction, highlighting the need for research and development in catalysts and electrodes.

SourceProceedings of the National Academy of Sciences·JournalProceedings of the National Academy of Sciences·DateFeb 25, 2019

Fat cells work different 'shifts' throughout the day

Researchers identified 727 genes in fat tissue that express their own circadian rhythm, many carrying out key metabolic functions. Morning-peaking transcripts regulate gene expression and nucleic acid biology, while evening-peaking transcripts are associated with redox activity and organic acid metabolism.

SourceUniversity of Surrey·JournalScientific Reports·DateFeb 25, 2019

An easier way to engineer plants

A new genetic tool has been developed by MIT researchers, allowing for easier engineering of plants that can survive drought or resist fungal infections. The technique uses nanoparticles to deliver genes into the chloroplasts of plant cells, which have the potential to revolutionize plant biology and agriculture.

SourceMassachusetts Institute of Technology·JournalNature Nanotechnology·DateFeb 25, 2019

Early life stress alters helping behavior of meerkat offspring

A University of Michigan study found that stressed Kalahari meerkat mothers alter the growth and behavior of their daughters, leading them to redirect energy towards helping future offspring, thereby benefiting their mothers. This phenomenon highlights a unique example of maternal effects on offspring in nonhuman animals.

SourceUniversity of Michigan·JournalPhilosophical Transactions of the Royal Society of London (B )·DateFeb 25, 2019

Urban parks could make you happier

Researchers from the University of Alabama at Birmingham found that spending 20 minutes in an urban park can boost happiness and reduce mental fatigue. The study suggests that time spent in a park is more important than physical activity for emotional well-being.

SourceUniversity of Alabama at Birmingham·JournalInternational Journal of Environmental Health Research·DateFeb 25, 2019

130,000 years of data show peatlands store carbon long-term

A new study reveals that peatlands have been a significant carbon sink over the past 130,000 years, storing carbon in their deposits and potentially slowing down climate change. The research, published in PNAS, fills a key knowledge gap about the global extent of peatlands and their role in the carbon cycle.

SourceLehigh University·JournalProceedings of the National Academy of Sciences·DateFeb 25, 2019

Mini-tornadoes of spores illuminated during raindrop impact

A recent study published in PNAS revealed that raindrop impact can transport rust spores using tornado-like air vortices, enabling long-distance pathogen spread. This discovery has significant implications for preventing disease spread in wheat crops and may inform new strategies for managing disease.

SourceVirginia Tech·JournalProceedings of the National Academy of Sciences·DateFeb 25, 2019

Boost for Australian grain industry

Researchers at La Trobe University and CSIRO found that early sowing of winter wheats can increase Australian wheat crop yields and global food security. The approach could add $1.8 billion to the national economy, with potential yield increases of 20%.

SourceLa Trobe University·JournalNature Climate Change·DateFeb 25, 2019

Few kids' multivitamin products supply recommended daily vitamin D dose

A survey of 91 different multivitamins and vitamin D supplements for children in the UK found that many do not provide the recommended daily dose of 400 IU of vitamin D. Only one multivitamin was suitable for use from birth, while between a quarter and a third of available products supplied at least 400 IU/day for children over 6 months.

SourceBMJ Group·JournalArchives of Disease in Childhood·DateFeb 25, 2019

Two treatments help dialysis patients with depression, study finds

Researchers found that cognitive behavioral therapy and the drug sertraline effectively reduce depression among people undergoing maintenance hemodialysis. The study, published in Annals of Internal Medicine, suggests that physicians should select the treatment available to patients, considering each comes with its own burdens.

SourceUniversity of Washington School of Medicine/UW Medicine·JournalAnnals of Internal Medicine·DateFeb 25, 2019

A very human machine

Researchers at Harvard University have developed a novel brain implant that mimics the appearance, size, and flexibility of real neurons, allowing for stable monitoring of neural signals and potential treatment of neurological disorders. The implants inspire negligible immune response and may even encourage tissue regeneration.

SourceHarvard University·JournalNature Materials·DateFeb 25, 2019

Identifying the common ground for sustainable agriculture in Europe

Researchers at Lund University have identified 32 key variables that are prioritized by all three groups: researchers, policymakers, and farmers. These variables focus on drivers related to policies, farm management choices, and environmental outcomes. The study highlights the need for alignment between research, policy, and practice t...

SourceLund University·JournalProceedings of the National Academy of Sciences·DateFeb 25, 2019