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A prehistoric forest grows in Brunei

A study published in PeerJ has discovered that the dominant tree group in Brunei's rainforest, dipterocarps, has remained unchanged for at least four million years. The research suggests that the current ecosystem is similar to what was present during the Pliocene Epoch, providing additional justification for conservation efforts.

SourcePenn State·JournalPeerJ·DateApr 28, 2022

African dust crosses the Atlantic

Researchers found a simulated annual downward trend in surface PM10 concentrations in Senegal and Cabo Verde after the 1980s. However, there was an increase in dust over the Western Sahara transported to Cabo Verde, suggesting Eastern Atlantic dust continued on toward the U.S. and Caribbean.

SourcePenn State·JournalAtmospheric Environment·DateApr 20, 2022

Bioprinting for bone repair improved with genes

An international team of engineers has successfully bioprinted bone along with two growth factor encoding genes that help incorporate cells and heal defects in rats. The researchers used gene encoding PDGF-B and BMP-2, which encouraged cell multiplication and migration, resulting in a 40% increase in bone tissue creation.

SourcePenn State·JournalBiomaterials·DateApr 12, 2022

Greater diversity in genetic studies helps researchers uncover new insights

A new study has shown that increasing genetic diversity can improve researchers' ability to identify important genetic markers for health conditions. The study, which analyzed data from over 470,000 Hispanic/Latino individuals, identified 42 previously unidentified regions of the human genome related to BMI, height, and waist-to-hip ra...

SourcePenn State·JournalHuman Genetics and Genomics Advances·TypeObservational study·DateApr 12, 2022

First European farmers' heights did not meet expectations

Researchers found that early European farmers were on average 1.5 inches shorter than their pre-agricultural counterparts. Heights steadily increased through the Copper, Bronze, and Iron ages, with some parts of Europe experiencing a height loss. The study suggests that environmental factors contributed to the decrease in heights.

SourcePenn State·JournalProceedings of the National Academy of Sciences·DateApr 7, 2022

Are egg cells in aging primates protected from mutations?

Researchers found that mutation frequencies in mitochondrial DNA of developing egg cells are lower and increase less with age compared to non-reproductive cells. This suggests a protective mechanism may keep reproductive cells relatively stable, potentially related to human propensity to reproduce at later ages.

SourcePenn State·JournalProceedings of the National Academy of Sciences·TypeExperimental study·DateApr 4, 2022

How would a nuclear winter impact food production?

A new study published in Ambio highlights the potential for tropical forests to provide food security in the face of a nuclear winter. Researchers identified 33 wild, edible plants and insects that could be cultivated or foraged in post-nuclear war conditions. These findings offer a new perspective on global food security and resilience.

SourcePenn State·JournalAMBIO·DateMar 30, 2022

Child abuse investigations may not prevent poor sexual health outcomes in girls

A recent study found that child abuse investigations by Child Protective Services (CPS) do not necessarily prevent poor sexual health outcomes in adolescent girls. In fact, the researchers discovered that girls who underwent investigation were more likely to experience adverse sexual health outcomes, including STIs and pregnancy, befor...

SourcePenn State·JournalJAMA Pediatrics·TypeObservational study·DateMar 29, 2022

Enhancing the electromechanical behavior of a flexible polymer

A Penn State-led team of researchers developed a flexible polymer with enhanced electromechanical behavior, resulting in a 60% increase in electricity generation efficiency. The material's properties were improved by deliberately introducing chemical impurities through doping and stretching the polymer to align molecular chains.

SourcePenn State·JournalScience·DateMar 24, 2022

The early pandemic’s effect on engineering students’ learning

The study found that while some students felt a sense of loss due to limited access, others saw the challenge as an opportunity to problem-solve and build flexibility. The researchers emphasize the importance of interpersonal relationships and instructors' resources in enhancing educational experiences.

SourcePenn State·JournalJournal of Engineering Education·DateMar 16, 2022

Novel theory of entropy may solve materials design issues

Researchers at Penn State have developed Zentropy theory, a new approach to understanding entropy that can predict anomalies in physical properties like volume. The theory may lead to breakthroughs in designing superconducting materials and structural materials that withstand higher temperatures.

SourcePenn State·JournalJournal of Phase Equilibria and Diffusion·DateMar 16, 2022

Studying diseases with better delivery of gene-editing tools

A Penn State-led team of researchers developed a new delivery system that improves the efficiency and lifespan of CRISPR gene-editing tools after delivery into stem cells. The method uses an enzyme called PiggyBac, which enables permanent integration of the editing tools into the cell's genetic code, resulting in 99% of mutated cells b...

SourcePenn State·JournalBioactive Materials·DateMar 7, 2022

A new molecular family tree of grasses

A new molecular study of grasses reveals a clear picture of their evolutionary relationships, shedding light on the evolution of C4 photosynthesis involved in heat and drought tolerance. The research provides evidence that this type of photosynthesis evolved independently multiple times within different grass lineages.

SourcePenn State·JournalMolecular Plant·TypeExperimental study·DateMar 2, 2022

Higher minimum wage may reduce rent defaults but raise rent payments

A new study found that a higher minimum wage was associated with fewer people defaulting on their rent payments, particularly among those at the lower end of the housing expense market. However, landlords responded by increasing rent payments, offsetting some but not all of the increased income.

SourcePenn State·JournalJournal of Urban Economics·TypeData/statistical analysis·DateMar 1, 2022

New research advances wearable medical sensors

Researchers have developed wearable sensors that collect data for clinicians while limiting patient discomfort. The sensors use flexible electronics to monitor patients' physical motions and chemical signals in their sweat, skin, and more to help diagnose or inform treatment plans.

SourcePenn State·JournalApplied Physics Reviews·DateMar 1, 2022

Repurposing FDA-approved drugs may help combat COVID-19

Scientists identified 16 compounds that affect SARS-CoV-2 enzymes Mpro and PLpro, which are essential for viral replication. The team found that combining Mpro and PLpro inhibitors has an additive antiviral effect, providing greater inhibition of SARS-CoV-2 replication. These findings offer hope for developing new COVID-19 treatments t...

SourcePenn State·JournalCommunications Biology·DateFeb 25, 2022