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Trees struggle to ‘breathe’ as climate warms, researchers find

Researchers found that trees in warmer, drier climates release more CO2 than they absorb, potentially compromising their ability to mitigate climate change. The study used a global dataset of tree tissue to analyze photorespiration rates, which are up to two times higher in warmer climates.

SourcePenn State·JournalProceedings of the National Academy of Sciences·TypeData/statistical analysis·DateJan 31, 2024

Evolutionary origin of mysterious immune system molecule in humans revealed

Researchers discovered that the human immune system borrowed a protein from a gene family responsible for cell migration to create an antibody-binding molecule. The J chain, which regulates antibody structure and function, originated from CXCL chemokines, a family of proteins regulating white blood cell movement.

SourcePenn State·JournalProceedings of the National Academy of Sciences·TypeExperimental study·DateJan 30, 2024

Predictive model detects potential extremist propaganda on social media

Researchers developed a predictive model to detect users and content related to Islamic State extremists on social media, identifying potential propaganda messages and their characteristics. The study's findings can help social media companies and law enforcement agencies track and prevent the spread of extremist propaganda.

SourcePenn State·JournalSocial Network Analysis and Mining·DateJan 26, 2024

Women farmers quantitatively linked to better community well-being

Researchers at Penn State and University of Wisconsin-Madison found that women farmers approach their operations in ways that positively impact their communities. The study revealed a positive association between women farmers and local economic variables such as nonfarm entrepreneurship, life expectancy, and poverty rates.

SourcePenn State·JournalApplied Economic Perspectives and Policy·TypeData/statistical analysis·DateJan 17, 2024

Interactive screen use reduces sleep time in kids, researchers find

Researchers found that interactive screen use, such as texting and playing video games, before bed delayed sleep onset by up to 30 minutes, while passive activities had no significant impact. The study suggests that limiting interactive screen time in the hour before bed can help protect teens' sleep and overall health.

SourcePenn State·JournalJournal of Adolescent Health·DateDec 13, 2023

Bacteria's mucus maneuvers: Study reveals how snot facilitates infection

Researchers found that thicker mucus enhances bacterial collective motion, forming coordinated swarms that can increase antibiotic resistance and spread infection. The study demonstrates the importance of mucus in facilitating bacterial swarming, which could pave the way for new strategies to combat infections and antibiotic resistance.

SourcePenn State·JournalPNAS Nexus·TypeExperimental study·DateDec 5, 2023

Social media influencers may affect more than voter opinions

Researchers found that social media influencers with distorted messages cause political parties to moderate their policies to win over independent voters. However, this leads to traditional media outlets becoming more extreme in their editorial positions, and citizens swayed by influencers growing more polarized.

SourcePenn State·JournalMIS Quarterly·DateDec 1, 2023

Debunking the myth of steady male employment

A new study by Penn State researchers found that only 41% of Baby Boomer men experienced continuous high employment over their prime earning years. Most men instead followed less stable employment paths with increasing unemployment, time out of work, or intermittent work.

SourcePenn State·JournalSocius Sociological Research for a Dynamic World·DateNov 13, 2023

Novel hydrogel finds new aptamers, or ‘chemical antibodies,’ in days

Researchers developed a novel method to find high-affinity aptamers, short DNA or RNA molecules that can bond to specific target molecules. The 'hydrogel for aptamer selection' (HAS) method uses a porous polymer network to retain well-fitting aptamers, reducing the time and effort required to identify suitable candidates.

SourcePenn State·JournalNature Biotechnology·TypeExperimental study·DateOct 16, 2023

Honey bees may inherit altruistic behavior from their mothers

A new study by Penn State researchers found that honey bees display true altruism, where worker bees help the queen and eggs without reproducing themselves. The genes responsible for this behavior can be passed down from either mother or father bees, but only result in altruistic behavior when inherited from the mother.

SourcePenn State·JournalMolecular Ecology·TypeExperimental study·DateOct 12, 2023

Climate-driven extreme heat may make parts of Earth too hot for humans

Billions of people worldwide will be exposed to unbearable heat and humidity if global temperatures increase by 1 degree Celsius or more. Regions with high population density, like Pakistan, India, China, and sub-Saharan Africa, are expected to experience frequent extreme heatwaves due to high humidity.

SourcePenn State·JournalProceedings of the National Academy of Sciences·DateOct 9, 2023

Can AI crave a favorite food?

A team of researchers at Penn State has developed an electronic tongue that can mimic human taste preferences, providing a possible blueprint for AI that processes information more like a human being. This innovation could lead to AI-curated diets based on emotional intelligence and personalized meal offerings in restaurants.

SourcePenn State·JournalNature Communications·TypeExperimental study·DateOct 4, 2023