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Science News Archive 2018 - Page 58


Page 58 of 473

Climate change damaging male fertility

New research from the University of East Anglia reveals that heatwaves can halve male reproductive fitness, reducing offspring production by three-quarters. The study found that heatwaves also damage inseminated sperm within female reproductive tracts, leading to reduced fertility and population viability.

SourceUniversity of East Anglia·JournalNature Communications·DateNov 13, 2018

USPSTF recommendation statement on screening and behavioral counseling interventions to reduce unhealthy alcohol use in adolescents and adults

The USPSTF recommends screening adults 18 and older for unhealthy alcohol use in primary care settings. Brief behavioral counseling interventions can also help reduce hazardous drinking. In contrast, the evidence is insufficient regarding screening in adolescents 12-17. The goal is to prevent premature death and birth defects related t...

SourceJAMA Network·JournalJAMA·DateNov 13, 2018

Purple bacteria 'batteries' turn sewage into clean energy

Researchers have discovered a way to harness the power of purple phototrophic bacteria to recover valuable biofuels from organic waste in wastewater treatment plants. By using an electric current to optimize metabolic output, they can generate hydrogen gas with near-100% carbon recovery and minimal CO2 emissions.

SourceFrontiers·JournalFrontiers in Energy Research·DateNov 13, 2018

Synthetic molecule invades double-stranded DNA

Researchers at Carnegie Mellon University developed a synthetic molecule that can recognize and bind to double-stranded DNA or RNA under normal physiological conditions. The Janus gamma PNAs have an extraordinarily high binding energy and can be designed to target genomic DNA for gene editing and transcriptional regulation.

SourceCarnegie Mellon University·JournalCommunications Chemistry·DateNov 12, 2018

Global warming has never stopped in the past hundred years

A new study reveals that global warming continued unabated since the Industrial Revolution, with a constant rate of change after World War II. The hiatus, often attributed to internal variability and external forcing, is actually a decadal balance between global warming and cooling from anomalous sea surface temperatures in the equator...

New records in perovskite-silicon tandem solar cells through improved light management

Researchers have developed a new approach to improve the efficiency of perovskite-silicon tandem solar cells by using textures and a polymer light management foil. This design achieved an efficiency of 25.5%, outperforming previous records, and has the potential to reach up to 32.5% with further improvements.

SourceHelmholtz-Zentrum Berlin für Materialien und Energie·JournalEnergy & Environmental Science·DateNov 12, 2018

Patients' own cells and materials used to create personalized tissue implants of any kind

Researchers at Tel Aviv University have developed a personalized tissue implant technology that uses patients' own cells and materials, allowing for the creation of any type of tissue implant with minimal immune response risk. This breakthrough has the potential to regenerate damaged or diseased organs with high efficiency.

SourceAmerican Friends of Tel Aviv University·JournalAdvanced Materials·DateNov 12, 2018

New insights into the aging brain

A new study reveals that klotho acts as a shield between the brain and immune system, protecting against age-related cognitive decline. The research found that low levels of klotho in the choroid plexus lead to increased brain inflammation, which can impair brain functions.

SourceGladstone Institutes·JournalProceedings of the National Academy of Sciences·DateNov 12, 2018

New physical activity guidelines for Americans released

The US Department of Health and Human Services has released updated physical activity guidelines for Americans, emphasizing the importance of regular exercise in improving health and reducing chronic disease risk. The guidelines recommend at least 150 minutes of moderate to vigorous aerobic activity or muscle-strengthening activities p...

SourceJAMA Network·JournalJAMA·DateNov 12, 2018

Scientists debunk potential link to crop cold tolerance

A new study by the University of Illinois and Massachusetts Institute of Technology refutes the idea that C4 crops like corn and sugarcane are limited in their ability to produce Rubisco, an enzyme essential for photosynthesis. The researchers found that these crops' chloroplasts have sufficient space to house more than enough Rubisco ...

Family, school support makes kids more likely to stand up to bullying

A recent study from North Carolina State University found that students with strong family relationships are more likely to intervene when witnessing bullying. Good teacher relationships also play a crucial role in encouraging bystander intervention. In contrast, those who feel excluded or discriminated against by peers or teachers are...

SourceNorth Carolina State University·JournalJournal of Youth and Adolescence·DateNov 12, 2018