Air pollution from particulate matter and ozone may amplify severe stroke risk in socioeconomically disadvantaged neighborhoods. Researchers found that tPA administration rates increased significantly among the elderly, with improvements seen in urban and teaching hospitals.
A new study reveals that Pacific wind patterns behind California's drought also led to a significant drop in small plant-like organisms in the northeastern Pacific Ocean, potentially affecting marine life. Meanwhile, researchers warn of worsening US air quality due to climate change, particularly ozone pollution fueled by nitrogen oxid...
A new study in Geophysical Research Letters finds that large thunderstorms can transport significant amounts of ozone from the stratosphere to the troposphere. Decades of mitigation efforts in megacities like Los Angeles demonstrate improvements in air quality, highlighting the need for continued action against urban air pollution.
Scientists at Penn State have discovered a miniscule vacuum gap that creates an energy barrier for electrons moving between layers of material. This gap is crucial for designing next-generation electronic devices, such as vertical tunneling field effect transistors.
A new study of the ALH84001 Martian meteorite provides valuable insights into Mars' early climate and potential habitability. The analysis suggests that smaller seas existed on Mars billions of years ago, rather than vast oceans.
A recent study led by the University of Cambridge found that ozone plays a crucial role in global warming, reducing surface warming by approximately 20% compared to most models. This discovery underscores the importance of including ozone feedback in climate models for more accurate predictions.
Research on ozone depletion reveals devastating effects on Southern Hemisphere weather, including increased incidence of floods, droughts, wildfires, and changes to tree growth rates and biodiversity in Antarctic lakes. Ozone hole impacts are also felt through changes in summer rainfall and wind patterns, posing risks to natural ecosys...
Researchers fabricated a new substance from atomic sheets that interlock like Lego toy bricks, offering potential for next-generation materials. The material, made of graphene and tungsten disulfide, combines the good properties of each component layer, enabling efficient solar cells and flexible electronics.
A new study found that contact lens discomfort is associated with degradation of the lipid layer in the tear film. Applying a liposomal eyelid spray increased stability of the tear film and improved dry eye symptoms, suggesting potential benefits for patients with contact lens discomfort.
Physicists at the University of Groningen have discovered a new manganese compound produced by tension in the crystal structure of terbium manganese oxide. The discovery could lead to the creation of new nanoscale circuits.
By 2050, cumulative exposure to ozone during the summer is expected to be high enough to damage vegetation globally. Ozone levels will remain below safe limits if greenhouse gas emissions peak in 2040, but may exceed safe limits if emissions continue to rise until 2100.
Research shows a recent increase in atmospheric hydrogen chloride, linked to ozone layer destruction, but experts say the Montreal Protocol is still on track for recovery. The study attributes the anomaly to temporary changes in atmospheric circulation, not rogue emissions.
A new study by UMass Amherst scientists predicts a significant increase in grass pollen production and allergen exposure due to climate change, with potential impacts on human health. The researchers found that elevated CO2 stimulates pollen production, leading to increased exposure for individuals with grass pollen allergies.
The Antarctic ozone hole reached its annual peak size on Sept. 11, with a maximum area of 24.1 million square kilometers, comparable to 2010, 2012, and 2013. Chlorine levels have declined by about 9 percent since 2000, contributing to the smaller ozone hole.
A Drexel University researcher studied indoor aerosol spikes caused by cleaning products and air fresheners, revealing the formation of secondary organic aerosols (SOAs) due to limonene reactions. The study suggests a significant impact on indoor air quality, warranting further public health research.
A team of scientists has successfully measured radiation leaks in star-forming galaxies, providing new insights into the formation of the first stars and galaxies. The breakthrough method uses a previously developed indicator, allowing researchers to study distant galaxies at longer wavelengths.
A new theoretical physics model reveals improved calculations of nitrous oxide photoabsorption, shedding light on its role in stratospheric ozone destruction. This breakthrough improves the accuracy of absorption cross sections and predicts major dissociation pathways.
Researchers found that high levels of volatile organic compounds (VOCs) triggered pollution-forming reactions in winter, concentrating ozone pollution. Ozone levels in northeastern Utah exceeded national air quality standards 49 times during the winter season.
Simulations by NASA researchers found that atmospheric gases like ozone, oxygen, and methane can be produced non-biologically, challenging the detection of life. However, combinations of these gases remain strong biosignatures, suggesting their presence is likely linked to biological activity.
A new study finds that India's ground-level ozone pollution damages millions of tons of major crops, including wheat and rice, each year, with losses estimated at over $1 billion. The damage is enough to feed tens of millions of people living in poverty, highlighting the need for policy changes to address ozone pollution.
Researchers developed a new approach combining in situ X-ray scattering with computational theory to design and synthesize new materials. They found that layer exchange is not unique to strontium and titanium, but expected for many different materials systems.
A new study shows that the Greater Toronto Area has reduced some smog precursors by at least 20% since 2004, but still exceeds Canada's ozone standards due to high sunshine and calm winds. The research found that lower ozone levels between 2008 and 2011 were offset by a record-high summer ozone concentration in 2012.
Scientists detected unexpectedly high emissions of CCl4, a banned ozone-depleting compound, averaging 39 kilotons per year. This finding suggests unidentified industrial leakages or unknown sources contributing to the compound's persistence in the atmosphere.
A new study from MIT warns that climate change and air pollution can combine to reduce crop yields, with effects varying by region. The study found that ozone pollution can cause significant damage to crops, particularly in the US where stricter regulations may mitigate its impact.
Researchers developed a novel scaffold for repairing spinal cord injuries, utilizing a double-layer collagen membrane with unequal pore sizes. This innovative approach enhanced the delivery of neural stem cells to the target site, promoting improved repair and recovery outcomes.
A team of scientists in China has developed a new type of perovskite solar cell that does not use a hole-transportation layer, showing high efficiency and stability. The innovation reduces production costs and paves the way for a cost-effective branch of development in this type of solar cell.
A major field project on the northern Front Range of Colorado will provide needed information to officials seeking to ensure healthy air. The study, FRAPPÉ, uses specially equipped aircraft, networks of ground-based instruments, and sophisticated computer simulations to track summertime ozone pollution.
A new NOAA climate model reveals southwestern Australia's long-term decline in fall and winter rainfall is primarily driven by manmade increases in greenhouse gases and ozone depletion. The study projects a continued decline in winter rainfall throughout the 21st century, with significant implications for regional water resources.
Researchers recorded record-breaking solar ultraviolet radiation in the Bolivian Andes, significantly higher than normal levels. This extreme radiation is comparable to those found on early Mars and poses a threat to local ecosystems.
New research highlights the erosion of building materials including stone, concrete and steel due to mix of pollutants and organic chemicals in green spaces. Experts recommend investing in green spaces to reduce greenhouse gases, cut pollution exposure and improve mental health benefits.
The new NASA images demonstrate a significant reduction in nitrogen dioxide levels across the United States over the past decade, indicating improved air quality. This decrease is attributed to regulations, technological advancements, and economic changes, despite increasing population and vehicle numbers.
Scientists have discovered two new chlorofluorocarbons (CFCs) and one new hydrochlorofluorocarbon (HCFC) in the atmosphere, which were released into the air in recent years. The discovery strengthens the argument that there are many more man-made gases in the atmosphere that could pose a threat to the ozone layer.
A study found that methyl oleate in biodiesel emissions reacts with ozone to reduce surfactant properties, slowing down water droplet growth and cloud formation. The reaction could impact the water cycle by altering cloud formations and rainfall patterns.
A new supersonic spray system produces a smooth, defect-free graphene layer by dispersing and restructuring graphene flakes. This method enables the production of high-quality graphene on various substrates without post-treatment or introducing defects.
The study of compressible mixing layers is crucial for propulsion design in high-speed vehicles. Researchers introduced a new framework called SED to analyze experimental data, providing evidence for nonlinear growth in CML. The findings suggest that lower growth rates are associated with large-scale vortices and inflow conditions.
Researchers warn of a 70% increase in unhealthy summertime ozone levels across the US by 2050 due to climate change. A sharp reduction in emissions could counteract this increase, however, and reduce ozone pollution even as temperatures warm.
Researchers at Penn State have developed a new metamaterial with high absorption over broad bandwidth, providing better protection against electromagnetic radiation. The material is designed using genetic algorithms and can be easily manufactured due to its simple layer structure.
Research led by NCAR finds US ozone levels projected to increase by 70% by 2050 due to rising temperatures and climate change. However, a sharp reduction in emissions of ozone precursors could reduce pollution even as the climate warms.
A Northwestern University study reveals a 20% decrease in ozone levels when fuel prices drive residents to switch from ethanol to gasoline in flexible-fuel vehicles. The study uses big data and consumer surveys to analyze the impact of human behavior on air quality in São Paulo.
Scientists have successfully directed charges through single molecules using a bi-layer arrangement of organic molecules, enabling precise control over electronic properties. This breakthrough brings us closer to nanoscale circuitry, which could be used in various applications such as OLEDs and biomedical devices.
A new MIT study finds that international efforts to limit ozone-depleting chemicals have been successful in preventing extreme Arctic ozone losses, unlike Antarctica.
A NASA simulation shows that stratospheric ozone intrusions have a significant impact on ground-level ozone concentrations in the US West, with effects two to three times greater than previously estimated. High-resolution models can now comprehensively examine these events for the first time.
A new study reveals a previously unknown atmospheric phenomenon over the South Seas, which boosts ozone depletion in polar regions and could have a significant influence on future climate. The discovery of the 'OH shield' layer allows long-lived chemical compounds to enter the stratosphere, contributing to global impact.
Studies suggest that eye structure and function may reveal features of early-stage Alzheimer's disease, including changes in retinal pigment epithelial layer and choroidal layer thickness. Researchers hope to develop new diagnostic methods using the eye as a window to brain activity.
Scientists have identified four new man-made gases in the atmosphere, all contributing to ozone layer destruction. The new chlorofluorocarbons and hydrochlorofluorocarbon emissions surpass pre-1990s levels, posing significant concerns for the environment.
Researchers at NC State University developed a 'superabsorbing' design that improves light absorption efficiency of thin film solar cells by decreasing semiconductor material thickness. The design, which looks like an onion, can absorb up to 90% of available solar energy using just a 10nm thick layer of amorphous silicon.
Researchers discovered a new layer in the human cornea that plays a vital role in fluid flow from the eye. This finding could shed light on glaucoma, a devastating disease caused by defective drainage of fluid.
Research by Meiyun Lin and colleagues found that Asian ozone pollution reaching Hawaii is relatively low in spring but rises significantly in autumn due to changes in atmospheric circulation. This shift has significant implications for understanding surface ozone levels globally.
A new study establishes a link between Arctic sea ice dynamics and the region's changing atmospheric chemistry, potentially leading to increased amounts of mercury deposited in sensitive ecosystems. The pumping effect created by opening and closing sea ice leads forces down additional mercury to restart chemical reactions.
New research by NASA scientists shows that signs of ozone hole recovery are not yet present, and temperature and winds continue to drive annual changes. The decline in chlorine levels has not yet led to a reduction in the size of the ozone hole.
Researchers found ozone, UV, and humidity significantly impact silver's corrosion rate. By understanding these factors, new models can predict atmospheric corrosion rates and improve performance. The study also aims to explore other metals' corrosion behavior.
Researchers found that sulfur dioxide and carbon dioxide releases from Siberian volcanoes could have created acidic rain, damaging plants and organisms. The study suggests that ozone depletion and temperature increases contributed to the end-Permian mass extinction on land.
Researchers found significant loss of neurons in the retina's inner nuclear and ganglion cell layers, suggesting Alzheimer's disease presence. The study suggests a potential new way to diagnose or predict Alzheimer's through eye examination, using optical coherence tomography.
Researchers developed a new photodiode that can detect the entire range of UVC light while remaining insensitive to visible light from the sun. This device is solar blind and has minimal dark current, making it useful for tracking ozone depletion and communication in space.
Researchers developed nanowires that block lithium diffusion, promoting layer-by-layer lithiation and potentially minimizing cracking and improving durability. This breakthrough could lead to more effective electrode architectures for lithium-ion batteries.
Researchers have discovered disturbing climate trends near Earth's surface, highlighting the impact of aerosols on cloud formation and human health. The study, led by Kimberly Prather and Vicki Grassian, aims to improve our understanding of aerosol chemistry and its effects on the environment.
A new study reveals that Pacific flights create the most amount of ozone, with the highest sensitivity in an area east of the Solomon Islands. Flights leaving and entering Australia and New Zealand result in the largest ozone production, with some flights producing up to 25,300 kg of ozone.
A new study by Prof. Sarah Kang found a significant relationship between ozone depletion and extreme daily precipitation in the Austral summer. The research used two global climate models to analyze the impact of stratospheric ozone depletion on precipitation patterns.
The HS3 mission sampled the environment of Tropical Storm Erin and revealed an elevated dust layer overrunning the storm. The Saharan Air Layer's role in tropical storm formation and intensification is a focus of the study, which aims to understand its impact on hurricane intensity change.
Researchers created a simplified computer model of the Fæhråe-Lindqvist layer, a thin plasma layer controlling platelet speed in blood vessels. The model predicts how different red blood cell shapes affect blood flow and can help design artificial platelets and treatments for trauma injuries.