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Despite fears to the contrary, Canadian wildfire smoke exposure was not much worse than a bad pollen day in New York City

Researchers found that Canadian wildfire smoke exposure led to a slightly higher bump in asthma-related hospital visits compared to high-pollen days. However, other potential health effects, such as heart attacks and strokes, require further investigation.

SourceNYU Langone Health / NYU Grossman School of Medicine·JournalAmerican Journal of Respiratory and Critical Care Medicine·TypeExperimental study·DateAug 23, 2023

Fanning the flames

Researchers at Washington University in St. Louis discovered that wildfires emit dark brown carbon, a potent climate-warming particle that absorbs solar radiation. This finding has broad implications for climate models and highlights the need to revise existing approaches to account for the unexpected effects of brown carbon.

SourceWashington University in St. Louis·JournalNature Geoscience·TypeExperimental study·DateAug 7, 2023

Eyes in the skies confirm the end of trash burning in the Maldives

A new AI approach has confirmed that the Maldivian government effectively enforced its ban on open trash burning and single-use plastics, eliminating toxic smoke plumes from satellite imagery. The tool, trained using transfer learning and image segmentation, achieved 88% accuracy in identifying plumes.

SourceDuke University·JournalEnvironmental Science & Technology Letters·TypeExperimental study·DateJul 13, 2023

Wildfire smoke threatens already endangered orangutans

A new study led by Cornell University's Wendy Erb found that orangutan vocal changes can be used to assess their health, as they alter their frequency and quality of sounds in response to wildfire smoke. This innovative method could help monitor the endangered species' well-being without putting them at risk.

SourceCornell University·JournaliScience·TypeObservational study·DateJun 15, 2023

How prescribed burns could limit megafires in California, Oregon, and Washington

Researchers found that controlled burns in key areas of northern California, western Oregon, and eastern Washington could drastically reduce wildfire smoke exposure throughout the entire western U.S. This is due to prevailing winds carrying smoke across the continent and abundant dense vegetation fueling smokey fires.

Experts demand fire safety policy change over health impact of widely used flame retardants

Experts call for a comprehensive review of UK's fire safety regulations to address the environmental and health risks of chemical flame retardants. The chemicals are found in various products, including furniture and building materials, and have been linked to health risks such as cancer and DNA damage.

SourceLancaster University·JournalEnvironment International·TypeCommentary/editorial·DateFeb 27, 2023

20,000 premature US deaths caused by human-ignited fires

A study published in Environmental Research Letters finds that human-ignited fires are responsible for over 67% of small smoke particles called PM2.5 in the US, leading to 20,000 premature deaths annually. The research highlights the need for ignition-focused management plans to reduce human-ignited fires and minimize health impacts.

SourceIOP Publishing·JournalEnvironmental Research Letters·DateJan 16, 2023

How a policy to address a groundwater shortage inadvertently increase air pollution in northern India

A government policy that pushed back the sowing of rice in northwest India led to a delay in harvests and agricultural burning, exacerbating air pollution. Without this delay, cities like New Delhi would have seen an average of 11-21% less smoke-related air pollution between 2008 and 2019.

SourceHarvard John A. Paulson School of Engineering and Applied Sciences·JournalJournal of Geophysical Research Atmospheres·DateDec 15, 2022

Fireworks have long-lasting effects on wild birds

Wild geese in Germany, Denmark, and the Netherlands experience significant changes in their behavior after fireworks, including flying further and foraging more, even after the disturbances end. The effects persist for up to two weeks, with birds leaving their sleeping sites and flying hundreds of kilometers non-stop.

SourceMax-Planck-Gesellschaft·JournalConservation Letters·TypeObservational study·DateNov 24, 2022

A smoky solution — for plants

Researchers have made a surprising discovery that liquid smoke can enhance plant defense against pests and diseases, leading to new farming practices. The study found that sunflowers grown in soil treated with liquid smoke had larger, thicker, and greener leaves and appeared less prone to pests and disease.

SourceUniversity of Missouri-Columbia·JournalInternational Journal of Molecular Sciences·DateOct 19, 2022

Second-hand smoke a possible asthma risk for future generations, study finds

Researchers found that children are more likely to develop asthma if their father was exposed to second-hand smoke as a child. The study also shows that the risk is higher for children whose fathers smoked themselves. Epigenetic changes may be responsible for passing on this increased risk through generations.

SourceUniversity of Melbourne·JournalEuropean Respiratory Journal·TypeData/statistical analysis·DateSep 15, 2022

Hotel smoking restrictions fail to fully protect guests from thirdhand smoke

A new study by San Diego State University analyzed 332,277 TripAdvisor guest reviews and found that designated smoking and non-smoking rooms are insufficient for protecting guests from thirdhand smoke. Hotels that adopted 100% smoke-free policies had significantly fewer complaints related to tobacco pollution.

SourceSan Diego State University·JournalTobacco Use Insights·TypeData/statistical analysis·DateSep 15, 2022

Smoking around your young son could raise the risk of asthma for your future grandchildren

A recent study published in the European Respiratory Journal found that children are more likely to develop asthma if their father was exposed to second-hand smoke as a child. The risk is even higher if the father went on to become a smoker himself. The researchers suggest that smoking can damage health not only for smokers and their c...

SourceEuropean Respiratory Society·JournalEuropean Respiratory Journal·TypeObservational study·DateSep 14, 2022

Understanding the effect of wildfires on air quality: a NASA initiative

A NASA initiative studies wildfire-induced air pollution by measuring atmospheric CO and O3 levels using airborne observations. The study found that CO levels increased in the plume as it was transported away from the fire site, while plume age was associated with distance in both vertical and horizontal directions.

SourceSPIE--International Society for Optics and Photonics·JournalJournal of Applied Remote Sensing·DateSep 7, 2022

Smoke from the Black Summer wildfires in Australia impacted the climate and high altitude winds of the southern hemisphere for more than a year and a half

A study led by Leibniz Institute for Tropospheric Research reveals that smoke from the Australian Black Summer wildfires spread across the southern hemisphere, warming upper atmosphere and cooling lower atmosphere. This has significant implications for climate modeling due to increasing wildfire frequency under climate change.

SourceLeibniz Institute for Tropospheric Research (TROPOS)·JournalAtmospheric Chemistry and Physics·TypeObservational study·DateSep 6, 2022

Climate change: Australian bushfires linked to largest stratospheric warming recorded in three decades

A study published in Scientific Reports found that Australian bushfires contributed to the highest recorded temperature in the lower stratosphere since the early 1990s. The smoke aerosols emitted by the fires led to a significant increase in stratospheric temperatures, with a modelled temperature spike of around 0.65 degrees Celsius.

SourceScientific Reports·JournalScientific Reports·DateAug 25, 2022

Western wildfire smoke plumes are getting taller

Climate change is intensifying Western US wildfire activity, resulting in taller smoke plumes and more aerosols injected into the atmosphere. The study models 4.6 million smoke plumes and finds that maximum plume height increased by an average of 320 ft per year in four regions, with some areas experiencing a 750 ft per year increase.

SourceUniversity of Utah·JournalScientific Reports·TypeObservational study·DateJul 27, 2022

Smoking, vaping linked to higher risk of severe COVID-19 complications, including death

A recent study found that people who smoke or vape prior to hospitalization for COVID-19 are more likely to experience severe complications, including death. The study, which analyzed data from the American Heart Association's COVID-19 CVD Registry, also showed that young individuals are particularly at risk.

SourceAmerican Heart Association·JournalJournal of the American Heart Association·DateJul 26, 2022

A more balanced public health approach is needed for e-cigarette use

A recent study on adult e-cigarette use highlights the need for a more nuanced public health approach. While e-cigarettes pose risks, they also offer potential benefits for cessation of combustible cigarette smoking. Researchers suggest balancing concerns with evidence-based strategies to promote e-cigarette use as a tool for quitting.

SourceRutgers University·JournalJAMA Network Open·TypeCommentary/editorial·DateJul 22, 2022

Electronic cigarette use among adults in US

A study of 994,000 US adults found a slight decrease in current e-cigarette use between 2018 and 2020, mainly among young adults aged 18-20. Daily e-cigarette use increased, particularly among those aged 21-24, indicating greater nicotine dependence.

SourceJAMA Network·JournalJAMA Network Open·DateJul 22, 2022

Wildfire-smoke observations fill gap in estimating soot’s role in climate change

Scientists have developed a new method to estimate the impact of black carbon from wildfires on climate change, using measurements of light absorption by coated soot particles. The study provides a more accurate way to forecast global climate change and resolves a long-standing uncertainty in earth system models.

SourceDOE/Los Alamos National Laboratory·JournalGeophysical Research Letters·TypeObservational study·DateJul 21, 2022

How nuclear war would affect earth today

A new study warns of the devastating effects of nuclear war on the Earth's systems. Global temperatures would plummet by 13 degrees Fahrenheit, causing crop failure worldwide. Ocean temperatures would drop quickly, leading to a 'Nuclear Little Ice Age' and disrupting marine ecosystems.

SourceLouisiana State University·JournalAGU Advances·TypeComputational simulation/modeling·DateJul 7, 2022

Wildfire smoke exposure negatively impacts dairy cow health

A new study in the Journal of Dairy Science finds that dairy cows exposed to wildfire smoke experience reduced milk production and altered immune function. The researchers observed a decrease in milk yield for seven consecutive days during the smoke exposure period, which persisted for another seven days post-exposure.

SourceElsevier·JournalJournal of Dairy Science·TypeExperimental study·DateJun 16, 2022

Stanford researcher discusses climate change and air pollution impacts on children’s health

Children are at higher risk of health changes due to air pollution and climate change impacts, including increased asthma rates and vector-borne diseases. Caregivers can take steps to minimize exposure by making personal and family changes such as using electric cars, reducing meat consumption, and improving indoor air quality.

SourceStanford University·JournalNew England Journal of Medicine·DateJun 15, 2022

Smoke break: UNLV study strengthens link between smoking and increased fracture risk in men

A UNLV study analyzed nearly 30,000 broken bone cases and found that smoking increases the risk of breaking a bone by as much as 37%. The study also found that men are more likely to experience fractures, particularly in the wrists, spine, and shoulders, due to nicotine's negative impact on bone cells and calcium absorption.

SourceUniversity of Nevada, Las Vegas·JournalScientific Reports·TypeMeta-analysis·DateJun 8, 2022

Human skin can be damaged by exposure to thirdhand smoke and electronic cigarette spills

Researchers discovered that dermal contact with nicotine concentrations found in thirdhand smoke and electronic cigarette spills can impair wound healing, increase susceptibility to skin infections, and cause oxidative stress in skin cells. The study suggests that even a short exposure of 24 hours is sufficient to cause skin damage.

SourceUniversity of California - Riverside·JournalAtmosphere·TypeExperimental study·DateJun 8, 2022