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Science News Archive May 2021 - Page 21


Page 21 of 47

Evidence suggests bubonic plague had long-term effect on human immunity genes

Researchers discovered innate immune markers increased in frequency in modern people from a region that experienced the plague, suggesting these markers might have evolved to resist the disease. The study also found changes in allele distribution for immune-related genes, which could be evidence of past Yersinia pestis exposure.

SourceUniversity of Colorado Anschutz Medical Campus·JournalMolecular Biology and Evolution·DateMay 18, 2021

Few women in sub-Saharan Africa undergo cervical cancer screenings

A recent study found that only 19% of women in sub-Saharan Africa underwent cervical cancer screenings between 2011 and 2018. The rates varied greatly by country, with some countries having nearly 46% of women screened versus less than 1%. Increasing screenings is crucial to detect the disease early and improve treatment outcomes.

SourcePenn State·JournalCancer Epidemiology·DateMay 18, 2021

Adding antibodies to enhance photodynamic therapy for viral and bacterial disease

Photodynamic therapy has shown promising results in treating respiratory tract infections and some types of cancer. Adding antibodies to the treatment can increase its efficacy, making it an attractive option for rapid responses to pandemics. The new approach uses viral antibodies attached to light-absorbing molecules to target viruses...

SourceAmerican Institute of Physics·JournalApplied Physics Reviews·DateMay 18, 2021

New peanut has a wild past and domesticated present

Researchers at the University of Georgia have developed new peanut varieties that combine the genetic diversity of wild relatives with the desirable traits of modern peanuts. The new lines are resistant to diseases such as leaf spot and root-knot nematode, and offer improved sustainability for farmers.

SourceUniversity of Georgia·JournalJournal of Plant Registrations·DateMay 18, 2021

COVID-19 hit stock markets as it spread from country to country

A recent study by Lero researchers found that COVID-19 growth largely explained changes in stock prices globally, but had little impact on China or the MSCI World index. The study suggests that investor sentiment and economic factors such as crude oil and bond yields played a greater role in shaping market prices.

SourceLero·JournalJournal of Behavioral and Experimental Finance·DateMay 17, 2021

Preemie boys age faster as men, study shows

Researchers found that premature boys age more quickly than their normal weight counterparts, with a biological age gap of 4.6 years by age 30-35. This accelerated aging may be influenced by prenatal stress and hospital care after birth, emphasizing the need for monitoring and healthy aging strategies.

SourceMcMaster University·JournalPEDIATRICS·DateMay 17, 2021

Global abundance of birds

A study examining global occurrences and population estimates for approximately 92% of all extant bird species found that there are approximately 50 billion individual birds in the world. Most bird species are rare, with only a few having estimated global populations of over 1 billion individuals.

SourceProceedings of the National Academy of Sciences·JournalProceedings of the National Academy of Sciences·DateMay 17, 2021