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Science News Archive November 2019 - Page 22


Page 22 of 41

The invisible US Hispanic/Latino HIV crisis: Addressing gaps in the national response

A peer-reviewed commentary warns of widening HIV infection disparities among Hispanics/Latinos, with the highest increase seen in gay and bisexual men aged 25-34. The article advocates for targeted investment in stigma reduction, treatment accessibility, behavioral interventions, and community leadership engagement to address the crisis.

SourceNew York University·JournalAmerican Journal of Public Health·DateNov 14, 2019

A one-way street for light

Researchers have successfully created a new one-way street for light by cooling photons to a Bose-Einstein condensate. This process causes the light to collect in optical valleys from which it can no longer return, effectively irreversibly dividing the light beam. The findings could be of interest for future quantum communication.

SourceUniversity of Bonn·JournalScience·DateNov 14, 2019

Protecting native vegetation on rural properties yields Brazil USD 1.5 trillion per year

The study estimates that preserving 270 million hectares of native vegetation yields Brazil USD 1.5 trillion per year in ecosystem services such as crop pollination, pest control, and water security. This research supports the importance of Legal Reserves and Permanent Conservation Areas in maintaining environmental services.

SourceFundação de Amparo à Pesquisa do Estado de São Paulo·JournalPerspectives in Ecology and Conservation·DateNov 14, 2019

Research reveals new state of matter: a Cooper pair metal

A team of researchers has revealed a new state of matter where Cooper pairs enable electricity to flow with some resistance. This finding challenges current theories and requires further investigation. The discovery was made using a technique that involves patterning a thin-film superconductor with arrays of tiny holes.

SourceBrown University·JournalScience·DateNov 14, 2019

Research award for project on heart transplantation

A recent study found that mitochondrial damage-associated molecular patterns (mtDAMPs) are released by DCD hearts following warm ischemia, correlating with subsequent contractile recovery. The research team aims to investigate the role of mtDAMPs in inflammatory responses and recovery of contractile function in cardiac grafts.

Stanford researchers explore how citizens can become agents of environmental change

A new Stanford-led study provides a framework for environmental education programs to maximize impact. The research highlights four key facets: focusing on locally relevant issues, collaborating with experts, incorporating action-oriented learning strategies, and measuring outcomes. By implementing these principles, citizens can make m...

SourceStanford University·JournalBiological Conservation·DateNov 14, 2019

How Crohn's disease-associated bacteria tolerate antibiotics

Researchers discovered that Crohn's disease-associated bacteria can switch between replicating and non-growing states within macrophages to tolerate antibiotics. This stress response allows a reservoir of antibiotic-tolerant bacteria to survive in the host and cause long-term inflammation and irritation.

SourcePLOS·JournalPLOS Pathogens·DateNov 14, 2019

Researchers capture moving object with ghost imaging

Ghost imaging allows forming images with lower light levels but has been limited to stationary objects due to blurring from movement. Researchers developed a new method combining blurry image information with object location data to capture high-quality images of moving objects using ghost imaging.

SourceOptica·JournalOptics Letters·DateNov 13, 2019

Secondary surgery does not improve overall survival for recurrent ovarian cancer patients

Researchers at the University of Texas MD Anderson Cancer Center found that secondary tumor-reduction surgery followed by chemotherapy did not result in longer survival than chemotherapy alone. The study involved 240 patients with platinum-sensitive recurrent ovarian cancer and showed that complete tumor resection was associated with i...

SourceUniversity of Texas M. D. Anderson Cancer Center·JournalNew England Journal of Medicine·DateNov 13, 2019

Theoretical tubulanes inspire ultrahard polymers

Researchers at Rice University have created a new type of polymer that is nearly as hard as diamond and can deflect bullets more effectively than solid materials. The polymers are inspired by theoretical structures called tubulanes, which were predicted to have extraordinary strength.

SourceRice University·JournalSmall·DateNov 13, 2019

Increased problematic use of marijuana in states where recreational cannabis is legal

A study from Columbia University's Mailman School of Public Health found that recreational cannabis legalization led to a 26% increase in past-month marijuana use and a 37% rise in cannabis use disorder among adults aged 26 and older. The researchers also observed a small increase in cannabis use disorder among adolescents.

Study finds links between early screen exposure, sleep disruption and EBD in kids

A new study found that early screen exposure, sleep disruption, and emotional behavioral difficulties (EBD) are associated in preschool children with neurodevelopmental disorders. The study suggests that the presence of multiple screen devices in the bedroom and excessive daily screen time are key factors contributing to these issues.

SourceSingHealth·JournalJournal of Developmental & Behavioral Pediatrics·DateNov 13, 2019

New RNA molecules may play a role in aging

Researchers at Thomas Jefferson University used a new sequencing method to identify a sea of previously invisible RNA molecules that may play a role in aging processes. The study found that these cyclic-phosphate containing RNAs (cP-RNAs) are abundantly expressed throughout the body and change in number as tissues age.

SourceThomas Jefferson University·JournalPLOS Genetics·DateNov 13, 2019

In states where recreational marijuana is legal, problematic use increased among adults and teens

A new study found that problematic marijuana use increased by 25% among adolescents aged 12-17, while past-month frequent use rose by 23% among adults aged 26 or older after recreational legalization. The study suggests investing in substance use prevention and treatment to prevent unintended harms.

Artificial intelligence tool predicts life expectancy in heart failure patients

Researchers developed an AI algorithm based on electronic health records data that accurately predicted life expectancy for heart failure patients, achieving an 88% success rate. The model identified eight readily available variables to determine low- and high-risk of death, providing valuable insight for informed medical decisions.

SourceUniversity of California - San Diego·JournalEuropean Journal of Heart Failure·DateNov 13, 2019

How giant kelp may respond to climate change

A study by University of California - Davis researchers found that giant kelp populations from different regions have distinct responses to climate change, with those from Southern California being more resilient to heat stress. The research also showed that ocean acidification did not negatively impact reproduction in some populations.

SourceUniversity of California - Davis·JournalJournal of Experimental Marine Biology and Ecology·DateNov 13, 2019

Changing weight-loss strategies, attempts

The proportion of adults who tried to lose weight increased from 1999 to 2016. Despite this surge, observational study findings suggest the results may not be reliable due to limitations in self-reported data. Commonly reported weight-loss strategies included eating less food, exercising, and drinking more water.

SourceJAMA Network·JournalJAMA Network Open·DateNov 13, 2019