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Science News for August 28, 2019


New insights into genetic basis of bird migration

Researchers identify VPS13A gene associated with migratory behavior in golden-winged and blue-winged warblers, shedding light on the complex genetic factors behind bird migration. The study's findings may have important conservation implications for declining populations of these species.

SourcePenn State·JournalProceedings of the National Academy of Sciences·DateAug 28, 2019

Southern Ocean circulation patterns that keep the lid on stored carbon are more complex than previously thought

Research reveals that horizontal and vertical circulation of carbon-rich ocean water in the subpolar Southern Ocean work together to control carbon storage and release. The study found that large gyres, such as the Weddell Gyre, play a key role in transporting carbon-containing phytoplankton out of the region.

UCI-led study: Plankton are more resilient to nutrient stress than previously thought

A UCI-led team has created the first high-resolution map of ocean surface phosphate, showing that marine phytoplankton are more resilient to nutrient stress than previously believed. This finding holds important implications for climate change predictions, as plankton communities can thrive even in nutrient-deficient environments.

SourceUniversity of California - Irvine·JournalScience Advances·DateAug 28, 2019

HIV-positive New Yorkers are living longer but still dying from underlying infection, not just from old age

A review of autopsy reports reveals that early in the HIV epidemic, the average age of death was 36, increasing to 54 by 2010 due to development of antiviral therapies. However, people are still dying predominantly from underlying disease rather than just old age, with infections like pneumonia and hepatitis C contributing to deaths.

SourceNYU Langone Health / NYU Grossman School of Medicine·JournalArchives of Pathology & Laboratory Medicine·DateAug 28, 2019

High-tech gel aids delivery of drugs

Researchers have developed a hydrogel-based carrier that can deliver siRNAs directly to tumors, overcoming the challenge of rapid degradation and limited cellular entry. This innovative technology has the potential to improve the effectiveness of siRNA-based cancer treatments and enable more efficient delivery of biologics.

SourceUniversity of Illinois Chicago·JournalScience Advances·DateAug 28, 2019

Brain stem cells have a good memory

Researchers at UNIGE have discovered that brain progenitor cells can recover their past skills and rejuvenate when transplanted into a young mouse embryo. This finding sheds light on how the brain constructs itself and opens up new possibilities for cortical neuroregeneration.

SourceUniversité de Genève·JournalNature·DateAug 28, 2019

Giving trauma patients blood pressure stabilizing hormone cuts transfusions by half

A new clinical trial from Penn Medicine found that administering arginine vasopressin to trauma patients with severe bleeding can significantly reduce the need for blood products, a promising way to save lives. The study, published in JAMA Surgery, showed that patients treated with AVP required less than half the usual volume of blood ...

High-protein bedtime snacks no problem for active women

Researchers challenge widespread misconceptions about nighttime eating and weight gain, finding protein consumption before bed has no effect on belly fat metabolism or whole-body fat burn in active women. Contrary to previous beliefs, a high-protein snack at night can actually have beneficial effects on fat release and metabolism.

SourceFlorida State University·JournalJournal of Nutrition·DateAug 28, 2019

Start-ups must be aware of star employee pitfalls

Research from Washington State University reveals that hiring star employees alongside founders can stall product innovation efforts due to conflicting influences. The study advises start-ups to establish clear chain of command, hire experienced start-up employees, and adapt to change as the organization evolves.

SourceWashington State University·JournalStrategic Entrepreneurship Journal·DateAug 28, 2019

Canadian astronomers determine Earth's fingerprint

Two McGill University astronomers have assembled a transit spectrum of Earth, a fingerprint of the planet's atmosphere in infrared light. This detection could help scientists identify planets capable of supporting life, such as TRAPPIST-1 system with seven habitable zone planets.

SourceMcGill University·JournalMonthly Notices of the Royal Astronomical Society·DateAug 28, 2019

Chance, not ideology, drives political polarization

A new study suggests that chance and opinion cascades, rather than deeply rooted ideological differences, drive political polarization. The researchers found that early movers can trigger a cascade in which later partisans pile on to their party's position, leading to large political differences.

SourceCornell University·JournalScience Advances·DateAug 28, 2019

A dual imaging approach may improve diagnosis and monitoring of prostate cancer

A new dual imaging approach combines transrectal ultrasound (TRUS) and photoacoustic imaging to detect anatomical features and molecular information of the prostate. This technology has shown promise in detecting prostate cancers with high accuracy, including distinguishing malignant regions in patients with advanced disease.

SourceAmerican Association for the Advancement of Science (AAAS)·JournalScience Translational Medicine·DateAug 28, 2019

Estimate of cigarette consumption in England

A study comparing survey and sales data found that estimated total cigarette consumption in England fell by almost one-quarter between 2011 and 2018. The decline is equivalent to approximately 1.4 billion cigarettes per year, highlighting the need for continued tobacco control efforts.

SourceJAMA Network·JournalJAMA Network Open·DateAug 28, 2019

Could marriage stave off dementia?

A new study found that married people are less likely to develop dementia as they age, whereas divorced individuals are twice as likely to experience the condition. The research analyzed data from over 15,000 respondents and suggests that marital status is an important social risk factor for dementia.

SourceMichigan State University·JournalThe Journals of Gerontology Series B·DateAug 28, 2019

Youth: Transgender people should use bathroom they're most comfortable in

A new study reveals that young people aged 14-24 overwhelmingly support the right of transgender individuals to use the bathroom they feel most comfortable in. Contrary to current policies in many schools, youth respondents believe bathroom use is a personal and private decision, and a matter of equality, freedom, and human rights. Thi...

SourceMichigan Medicine - University of Michigan·JournalJournal of Homosexuality·DateAug 28, 2019