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Science News Archive November 2018 - Page 6


Page 6 of 42

'Stash your trash,' say rat researchers

Researchers found that areas with higher rat complaints had increased trap rates and more garbage, suggesting a correlation between waste and rodent abundance. The study also revealed neighborhoods with high rental units tended to have more rats, possibly due to increased trash and access points.

SourceFrontiers·JournalFrontiers in Ecology and Evolution·DateNov 28, 2018

Fires fueled spread of grasslands on ancient Earth

A new study links frequent, seasonal fires to the formation and expansion of ancient grasslands. The researchers used a novel approach to analyze plant biomarkers in fossil soils, revealing that fire played a crucial role in shaping the landscape.

SourcePenn State·JournalProceedings of the National Academy of Sciences·DateNov 28, 2018

When a city feels good, people take more risks

Researchers found that unexpected positive outcomes in cities, such as sports wins or sunny days, are correlated with a change in city mood and an increase in citizens taking risks like gambling. This effect is subtle but significant, with a predicted 2.5% increase in spending on gambling in reactive neighborhoods.

SourceMcGill University·JournalPLOS ONE·DateNov 28, 2018

First calf born following IVF embryo breakthrough

University of Kent researchers have successfully used IVF embryo breakthrough technology to screen for genetic merit and chromosome disorders in cattle. This innovative approach allows for earlier decision-making on the quality of breeding stock and more efficient delivery of genetically screened embryos to farms.

SourceUniversity of Kent·JournalTheriogenology·DateNov 27, 2018

British Journal of Cancer press notice

Researchers have discovered that dasatinib sensitizes triple negative breast cancer cells to chemotherapy by targeting breast cancer stem cells. Additionally, a systematic review and meta-analysis found an increased risk of second cancers at sites associated with HPV after a prior HPV-associated malignancy.

SourceCancer Research UK·JournalBritish Journal of Cancer·DateNov 27, 2018

Stigma impairs cognition in men living with HIV

A recent study found a direct link between the amount of stigma men with HIV report experiencing and their scores on cognitive tests, measuring abilities like memory and attention. The researchers suggest that addressing stigma may address cognitive impairment in this population by reducing anxiety and depression.

SourceMcGill University·JournalJAIDS Journal of Acquired Immune Deficiency Syndromes·DateNov 27, 2018

How water fleas detect predators

Researchers at Ruhr-University Bochum discovered that water fleas detect predator presence through a cocktail of signalling molecules secreted by Chaoborus larvae during digestion. The fleas respond by growing defensive features such as neckteeth and spines, making them harder to consume.

SourceRuhr-University Bochum·JournalNature Chemical Biology·DateNov 27, 2018

Fitbits go the distance in running study

A study by La Trobe University found that Fitbits have good-to-excellent reliability for measuring running speeds between 8-14kms/h. The accuracy of the device was also confirmed in a slow motion visual count, with a difference of less than one per cent.

SourceLa Trobe University·JournalInternational Journal of Sports Physical Therapy·DateNov 27, 2018

'Dancing' hyperon in pear-shaped hypernuclei

The study of 'dancing' hyperons in pear-shaped hypernuclei reveals unique behaviors and new insights into fundamental interactions. Researchers found that the hyperon's spatial distribution has a spherical symmetry when occupying the lowest-energy state, shrinking nuclear size and decreasing quadrupole deformation.

The warm and loving tegu lizard becomes a genetic resource

The tegu lizard's genome has been sequenced to an unprecedented level of quality, revealing its ability to regulate its body temperature and potentially threatening native species. The high-quality genome assembly will aid scientists in studying other lizards and snakes, shedding light on their evolutionary history.

SourceGigaScience·JournalGigaScience·DateNov 27, 2018

First ancient DNA from mainland Finland reveals origins of Siberian ancestry in region

The study found the earliest evidence of Siberian ancestry in Fennoscandia in a population inhabiting the Kola Peninsula, Russia, dating to around 4,000 years ago. Ancient DNA from Finland reveals that people genetically similar to present-day Saami people inhabited areas in much more southern parts of Finland than the Saami today.

SourceMax Planck Institute of Geoanthropology·JournalNature Communications·DateNov 27, 2018

Not just a pretty face: Botulinum toxin shows promise in trials to reduce post-operative atrial fibrillation (POAF) in cardiac surgery patients

Two clinical trials using botulinum toxin injections to suppress post-operative atrial fibrillation (POAF) showed promising results. Patients who received BTX injections during surgery had a sustained reduction in POAF incidence and overall burden over three years, accompanied by reduced hospitalization needs.

SourceElsevier·JournalHeart Rhythm·DateNov 27, 2018