A study by Penn State researchers found that women undergoing in vitro fertilization had lower success rates if exposed to high levels of nitrogen dioxide. The study, which analyzed data from over 7,400 women, suggests that air pollution may be a factor in reproductive health.
Scientists have developed a low-cost behavioral assessment that can detect changes in the progression of mild cognitive impairment (MCI) and predict Alzheimer's disease. The test measures information processing capacity, which correlates with hippocampal degradation and decline in brain function.
Researchers found a positive correlation between individuals with a positive attitude towards physical activity and those who performed more unintentional physical activity. Unintentional activity, such as climbing stairs or walking further to reach a parking spot, can help burn extra calories.
Scientists have found that blindsnakes, a group of worm-like snakes, are one of the few organisms that inhabited Madagascar when it separated from India 100 million years ago. The study reveals that continental drift played a crucial role in their evolution, with populations separating as continents moved apart.
The new Multiple Collector Inductively-Coupled Mass Spectrometer (MC-ICP-MS) will help researchers interpret the Earth system's history and understand connections in weathering-climate systems. It will enable faster data analysis, expand isotopic techniques to new fields, and promote interdisciplinary collaboration.
A longitudinal study by Penn State researchers found that adolescents' input into decisions increases gradually, with more autonomy in areas such as appearance, activities, and schoolwork. The study also revealed differences in decision-making autonomy among children with varying family characteristics.
Researchers at Penn State College of Medicine have identified a set of 17 proteins in the blood that accurately predict alcohol usage 90% of the time. These proteins can distinguish between excessive and responsible drinking levels, offering a potential diagnostic test for alcohol consumption.
Researchers are using songbirds to understand how the human brain produces complex vocal behaviors, including speech. By studying the neural mechanisms that govern birdsong, they hope to develop a better understanding of speech disorders and language processing.
A team of scientists has discovered that the drastic decline in Arctic musk ox populations began due to a warming climate rather than human hunting. The researchers used ancient DNA to test for human impacts on musk ox populations and found that humans were not responsible for their decline.
Nannoplankton extinction correlates with latitude, with higher rates in the Northern Hemisphere. Toxic metals from the asteroid impact likely delayed recovery due to impaired photosynthesis and reduced nannoplankton reproduction.
A rare ancient polar bear fossil has yielded essential information about the species' evolutionary history and response to past climate changes. The research confirms that polar bears evolved recently and adapted quickly, with a split from brown bears around 150,000 years ago.
Researchers found that depression is associated with spikes in cortisol levels for both boys and girls after stress tests. However, higher cortisol reactions to stress are only linked to obesity in girls. Early treatment of depression could help reduce stress and control obesity in this demographic.
Researchers have found that shallow-rooted bean plants can thrive in poor soil conditions, improving crop production by 600% and decreasing erosion. Shallow-rooted soybeans are also being developed for low-phosphorus soils, while efforts are underway to improve nitrogen efficiency in corn.
A team of scientists has sequenced human genomes from Southern African Bushmen and Bantu individuals to better understand human genetic variation. The study identified 1.3-million genetic variants, showcasing the distinct genetics of Southern Africans compared to other populations.
Researchers discovered diverse corals harboring unusual, thermally tolerant algae species in the Andaman Sea. These findings suggest some coral reefs may persist despite future global warming.
Researchers studying supra-glacial lakes on the Greenland ice sheet seek to understand their role in shaping the ice sheet's topography. The lakes form when melting water collects in pools in the lower levels of the ice sheet, and drain rapidly through cracks in the ice.
Researchers study how parents use feeding to soothe infant distress, exploring its relation to rapid weight gain in infancy and subsequent childhood obesity. The study examines the role of genetics and dopamine in the brain's reward system, potentially linking parent feeding practices to increased energy intake.
A study by Penn State researchers found that health information from doctors on websites is considered more credible than blogs. Participants were more likely to trust expert sources and act on their advice, with a greater emphasis on the role of editors in presenting accurate information.
Researchers developed an algorithm to target local scanning worms, which can evade worm defenses. The algorithm estimates susceptible host population size and quarantines the worm if scans exceed a threshold value.
A common plant virus attracts aphids by elevating the odor cue of infected plants without changing it. The insects transmit the disease efficiently despite leaving quickly, implying a persistent mode of transmission beyond agriculture.
Researchers create a high-speed optical system using multi-element transmitters and receivers for secure, low-interference communications in restricted areas like hospitals and aircraft. The system can transmit at gigabit per second speeds over gigahertz bands.
Researchers examine delivery of end-of-life care in Pennsylvania prisons, developing intervention toolkit and educational strategies to address racial/ethnic disparities and optimize patient care. The study aims to provide insights into delivering high-quality healthcare in complex organizations.
Researchers found that a mix of purchasing options can significantly lower costs and increase available water, while avoiding supply failures during droughts. This hybrid approach combines the benefits of buying diverse stocks with water risk management.
A nearly $1.9 million grant from the National Science Foundation will support research on the potential effects of climate change on infectious diseases such as malaria and dengue fever, which annually infect 500 million people worldwide. The project aims to quantify how environmental temperature influences disease transmission and risk.
A new study has strengthened a family-strengthening intervention program, showing improved parental anger control and more positive relationships with children. The adapted program aims to prevent poor outcomes in teens, such as substance use and risky behavior.
Despite quality issues and social stigma, a majority of Pennsylvania's mobile home residents are satisfied with their homes. The primary benefit of living in a mobile home is affordability, according to Penn State researchers who found that 48% of respondents cited affordability as a major advantage.
A team of researchers at Penn State has discovered that certain combinations of elemental atoms can mimic the electronic signatures of other elements. By examining photoelectron spectroscopy data, they found similarities between titanium monoxide and nickel, zirconium monoxide and palladium, and tungsten carbide and platinum.
Researchers found two brown dwarf-sized masses around an ordinary star, which is extremely rare. The discovery suggests that planets may assemble around stars more quickly and efficiently than thought possible.
A team of researchers found low-angle normal faults, thought to be stable, can actually slip due to the presence of talc and clays allowing for easy sliding. This challenges previous laboratory experiments that indicated these faults should not move.
Researchers at Penn State have developed a new type of glass that blocks ultraviolet light and has increased radiation damage resistance. The cerium-containing phosphate glasses can be used in windows, sunglasses, and solar cells.
Researchers studied gait to identify physical signs of Parkinson's disease in its early stages. The team found that people with Parkinson's had significantly asymmetrical arm swings compared to those without the disease.
The Nuclear Regulatory Commission has awarded Penn State's nuclear engineering program nearly $1 million to boost nuclear education and expand the workforce. The funding will support a radiochemistry education program with a new laboratory course providing hands-on experience for students.
A study by Penn State researchers used a computer model to compare senators' voting records to their floor statements on issues. The findings showed that legislators tend to use nouns and adjectives that signal their voting patterns. Future research could include building automated programs to analyze real-time data.
Researchers found that religious searching behaviors remained mainstream and technologically savvy, despite secularization trends. Search engines poorly delivered relevant content, likely due to localized religious websites.
Researchers found that anxiety sensitivity significantly predicted depression symptoms in above-average worriers. The fear of cognitive dyscontrol and publically observable anxiety symptoms specifically correlated with depression. Understanding this link may lead to new depression treatments by addressing anxiety sensitivity.
Researchers reconstructed spatial patterns of ocean and land surface temperature over the past 1500 years using diverse climate proxies. They found dynamic connections between natural phenomena like El Niño and regional temperature changes.
A study is using cell phones to collect detailed data on human interactions, allowing for a more accurate picture of daily life. The research aims to refine existing prevention programs by identifying patterns in individual behavior.
Researchers found search engines are used for fact-checking and supporting higher-level information needs, revealing a more complex role in learning. Their study suggests design improvements for search engines can better address users' cognitive and affective aspects.
A team of scientists led by Ross Hardison has made significant discoveries about the mechanisms of gene regulation in red blood cells. They found that transcription factor GATA-1 controls the expression of over 2,600 genes by binding to specific sites on DNA.
A $1 million project aims to develop computational tools using next-generation petascale computers to analyze genome rearrangements. The team plans to test their new algorithms on a collection of fruit fly genomes, which will provide insights into the mechanisms underlying gene order diversity.
Research found that couples who use thoughtfulness and reasoning during conflicts show lower stress-related protein levels, suggesting a potential health benefit. The study measured cytokine levels before and after marital discussion tasks and found a correlation between cognitive word use and reduced inflammation.
Researchers found that sprinters have significantly shorter lever arms in their ankles compared to non-sprinters. This allows muscles to produce greater force without sacrificing speed. The study suggests that a unique foot structure is essential for sprinting success, with longer toes providing an additional advantage.
Researchers are using two tiny insects, the predatory mite and the lady bug, to control European red mites and two-spotted spider mites in Pennsylvania apple orchards. By reducing pest mite numbers, biological control saves growers millions in integrated pest management costs.
Researchers aim to correlate seismic activity with glacier slip using pump tests and measurements of natural seismicity. The projects focus on stability of ice stream grounding zones and role of active subglacial lakes in ice sheet loss.
A recent space experiment using the Fermi Gamma Ray Space Telescope has provided evidence about the fundamental structure of space and time. The team confirmed aspects of Einstein's theories of gravity, which unite space and time in the concept of space-time.
A team of researchers is exploring the fossil record of ancient plants in Patagonia, Argentina, which could provide insights into plant evolution, distribution, and ecology. The study aims to determine if a major plant extinction occurred when dinosaurs went extinct and how long it took for recovery.
Researchers analyzed global warming's impact on four New World monkey species, finding a significant drop in their populations during climate fluctuations. The team used statistical models to investigate how food resources and tree responses related to temperature and rainfall patterns.
Researchers found genetically modified squash are more susceptible to bacterial wilt disease due to increased feeding by cucumber beetles. The study suggests that the fitness advantage of virus-resistant crops comes at a price, with unintended consequences for biodiversity.
Researchers have identified groups of neurons that precisely keep time in the primate brain, allowing for fine-scale control over actions. The discovery opens doors to investigations into how the brain produces and uses its natural time code.
Scott Anderson of Palm Beach, Fla., and his team won the 2009 ConocoPhillips Energy Prize with their ECO-Auger, a hydrokinetic machine harnessing tidal currents for renewable electric energy. The prize recognizes innovative ideas to create a more secure energy future.