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Science News Archive October 2019 - Page 19


Page 19 of 47

Lead poisoning reduced with safer mining practices

A pilot program introducing safer mining practices in Nigerian gold mining communities has reduced blood lead levels among miners by 32%. The study, published in the British Medical Journal Occupational and Environmental Medicine, also found that women miners experienced lower reductions in lead levels. The project's success demonstrat...

SourceOK International·JournalOccupational and Environmental Medicine·DateOct 21, 2019

Images offer most detailed glimpse yet into how skin senses temperature

Columbia University researchers have captured the most detailed images yet of a temperature-sensing molecule in its open, intermediate, and closed states. The findings will help us understand the mechanics of hot and cold sensation, which could accelerate the development of drugs for inflammatory skin disease, itch, and pain.

SourceColumbia University Irving Medical Center·JournalNature Structural & Molecular Biology·DateOct 21, 2019

GenBank can be trusted

A recent study analyzed over 4.7 million mtDNA sequences from GenBank and found fewer errors than predicted, with less than 1% of sequences mislabeled. The researchers identified potential sources of error, such as human or lab animal contamination, but overall found GenBank to be a reliable tool for environmental DNA identification.

SourceSmithsonian Tropical Research Institute·JournalProceedings of the National Academy of Sciences·DateOct 21, 2019

Catastrophic events carry forests of trees thousands of miles to a burial at sea

Research team finds wood chips from ancient trees dating back 19 million years in ocean core samples, revealing a previously unrecognized way carbon remains locked away for millions of years. The discovery suggests that the amount of carbon exported and buried by modern rivers may be 50% greater than previously thought.

SourceUniversity of Southern California·JournalProceedings of the National Academy of Sciences·DateOct 21, 2019

Closures affect 1 in 8 pharmacies in the US

A study by researchers at the University of Illinois Chicago found that one in eight pharmacies in the US closed between 2009 and 2015. Independent pharmacies in urban areas are disproportionately affected, with nearly half closing due to lack of access to preferred pharmacy networks and 340B contracts.

SourceUniversity of Illinois Chicago·JournalJAMA Internal Medicine·DateOct 21, 2019

Family members can assist in preventing post-operative delirium by as much as 16.8%

A study published in JAMA Internal Medicine found that adapting the Hospital Elder Life Program for non-volunteers and family members can effectively prevent post-operative delirium. The tailored intervention reduced delirium occurrence by 19.4% compared to usual care, with greater functional and cognitive recovery afterwards.

Analysis of US pharmacy closures

Pharmacy closures in the US are becoming increasingly common, with significant implications for patient access to essential medications and care. The research letter highlights several risk factors associated with closure, including demographic changes, consolidation of pharmacies, and regulatory issues.

SourceJAMA Network·JournalJAMA Internal Medicine·DateOct 21, 2019

Song-learning neurons identified in songbirds

A study published in PNAS reveals that corticobasal ganglia projecting neurons play a crucial role in song learning during juvenile development. In contrast, adult birds with disrupted projection neurons maintain their pre-learned song structure and exhibit normal vocal fluctuations.

SourceHokkaido University·JournalProceedings of the National Academy of Sciences·DateOct 21, 2019

Mystery solved: Ocean acidity in the last mass extinction

A Yale University study reveals that the Cretaceous-Paleogene extinction event was triggered by a sharp drop in ocean acidity, leading to the demise of marine calcifiers and a 50% decline in species productivity. The research provides new insights into the recovery of marine life after the event.

SourceYale University·JournalProceedings of the National Academy of Sciences·DateOct 21, 2019