Air Quality

Air Quality News -- ScienceDaily What is air pollution? Read news articles on the sources of air pollution and what can be done to minimize pollutants. Learn about both indoor air quality control and outdoor air pollution.

  • Rapid cloud clearing phenomenon could provide another piece of climate puzzle
    on July 19, 2018 at 6:21 pm

    Researchers have described rapid and dramatic clearing of low cloud cover off the southwest coast of Africa. This newly observed phenomenon could help climatologists understand how clouds affect Earth's heating and cooling. […]

  • Learning from 'little monsters'
    on July 19, 2018 at 6:21 pm

    By studying deep and shallow water zones of streams and their resident invertebrates, researcher reveals mysteries of fresh water life. […]

  • Sudden cold weather may increase stroke mortality
    on July 19, 2018 at 3:22 pm

    Study conducted in Southern Hemisphere's subtropical zone detects correlation between drop in temperature and rise in deaths from stroke, especially among women and older people. […]

  • In the ocean's twilight zone, tiny organisms may have giant effect on Earth's carbon cycle
    on July 18, 2018 at 9:03 pm

    In a new study that challenges scientists' presuppositions about the carbon cycle, researchers find that tiny organisms may be playing in outside role in the way carbon is circulated throughout the ocean. […]

  • More category 5 hurricanes forecasted by scientists
    on July 18, 2018 at 7:22 pm

    Researchers have learned from studying 2012's Hurricane Sandy, that we are more likely to see larger, more powerful hurricanes in the future. […]

  • Ozone pollution in US national parks close to that of largest US cities
    on July 18, 2018 at 6:31 pm

    The research matched pollution data to monthly park visitation statistics at 33 heavily visited national parks and found that visitation responds most to ozone during months with poor air quality. […]

  • Warming rivers make marked contribution to global greenhouse gas levels
    on July 18, 2018 at 6:30 pm

    Warming streams and rivers could be disproportionately contributing to the amount of planet-warming greenhouse gases, according to a new study. […]

  • Billion-year-old lake deposit yields clues to Earth's ancient biosphere
    on July 18, 2018 at 5:48 pm

    A sample of ancient oxygen, teased out of a 1.4-billion-year-old evaporative lake deposit in Ontario, provides fresh evidence of what the Earth's atmosphere and biosphere were like during the interval leading up to the emergence of animal life. […]

  • Atlantic circulation is not collapsing -- but as it shifts gears, warming will reaccelerate
    on July 18, 2018 at 5:11 pm

    Data suggest that the recent, rapid slowdown of the Atlantic Ocean circulation is not a sign of imminent collapse, but a shift back toward a more sluggish phase. The slowdown implies that global air temperatures will increase more quickly in the coming decades. […]

  • Allergies: Mugwort pollen as main source of airborne endotoxins
    on July 18, 2018 at 2:47 pm

    Different airborne substances can cause respiratory problems for asthma sufferers. These include bacteria and their components, which can trigger inflammations. How they become airborne has not been fully explained up to now. A team has now shown that pollen from the mugwort plant is the main vector for bacteria and that this combination renders the pollen more aggressive. This is not the case in certain Alpine regions. […]

  • Effort to preserve lory population shows success
    on July 18, 2018 at 1:25 pm

    A long-term plan to preserve the Rimatara lorikeet by restoring an extirpated population of the species on a neighboring island that is free of predatory ship rats is demonstrating the importance of this kind of protective program for the sustainability of endangered bird species.&nbs […]

  • Traditional Tibetan medicine exposes people and environment to high mercury levels
    on July 18, 2018 at 12:22 pm

    Many people view the Tibetan Plateau, or 'Roof of the World,' as a pristine alpine environment, largely untouched by pollution. But researchers have now shown that traditional Tibetan medicine exposes people and the environment to high levels of mercury and methylmercury. […]

  • Solutions to water challenges reside at the interface
    on July 17, 2018 at 4:58 pm

    Researchers describe the most advanced research innovations that could address global clean water accessibility. A new comprehensive article focuses on understanding and controlling the interfaces between materials and water. […]

  • Nitric oxide tells roundworms to avoid bad bacteria
    on July 17, 2018 at 4:56 pm

    Nitric oxide gas produced by a type of harmful bacteria lets roundworms know to stay away from it, says a new study. […]

  • The freediving champions of the dolphin world
    on July 17, 2018 at 1:48 pm

    New research explains how some populations of bottlenose dolphins can dive to almost 1,000 meters while avoiding decompression sickness. The new hypothesis suggests that lung architecture and the management of blood flow allow bottlenose dolphins to access oxygen in the lungs while preventing uptake of nitrogen which would cause the bends. The findings act as a starting point to understand how environmental changes and anthropogenic interaction may impact the future of the species. […]

  • How does the sun's rotational cycle influence lightning activity on earth?
    on July 17, 2018 at 1:47 pm

    A collaborative research team has taken the first steps to understanding how the sun's rotational cycle influences lightning activity. They found answers in an unusual source -- diaries dating back to the 1700s. […]

  • Thawing permafrost microbiomes fuel climate change
    on July 16, 2018 at 7:15 pm

    A new study could lead to more accurate predictions or the rate of global warming from greenhouse gas emissions produced by thawing permafrost in the next 100 years. The study of the microorganisms involved in permafrost carbon degradation links changing microbial communities and biogeochemistry to the rise of greenhouse gas emissions. […]

  • Bacteria engineered to create fertilizer out of thin air
    on July 16, 2018 at 6:59 pm

    Researchers have created a bacteria that uses photosynthesis to create oxygen during the day, and at night, uses nitrogen to create chlorophyll for photosynthesis. This development could lead to plants that do the same, eliminating the use of some -- or possibly all -- human-made fertilizer, which has a high environmental cost. […]

  • Looking toward Earth's future climate
    on July 16, 2018 at 6:16 pm

    A new article reveals new insights into one of the most complex challenges of Earth's climate: understanding and predicting future atmospheric levels of greenhouse gases and the role of the ocean and land in determining those levels. […]

  • Using 'shade balls' in reservoirs may use up more water than they save
    on July 16, 2018 at 3:46 pm

    Preventing reservoir evaporation during droughts with floating balls may not help conserve water overall, due to the water needed to make the balls. […]

  • Getting to know the microbes that drive climate change
    on July 16, 2018 at 3:45 pm

    A new understanding of the microbes and viruses in the thawing permafrost in Sweden may help scientists better predict the pace of climate change. […]

  • Particulate matter increases drought vulnerability of trees
    on July 16, 2018 at 2:35 pm

    Particulate matter deposits on leaves increase plant transpiration and the risk of plants suffering from drought. Particulate matter could thus be contributing more strongly to tree mortality and forest decline than previously assumed. This is suggested by results from a greenhouse study, in which tree seedlings grown in almost particulate matter free air or in unfiltered air were compared. […]

  • New tool to calculate 'nitrogen footprint' offers guide to pollution reduction
    on July 16, 2018 at 2:31 pm

    Researchers have helped create the first tool to calculate the 'nitrogen footprint' of an organization. The tool will provide a guide to sustainability and pollution reduction for daily activities such as food consumption, travel and energy use. […]

  • Better methods improve measurements of recreational water quality
    on July 13, 2018 at 5:51 pm

    The concentration of enterococci, bacteria that thrive in feces, has long been the federal standard for determining water quality. Researchers have now shown that the greatest influences on that concentration are the quantity of mammalian feces in the water, and the numbers of enterococci that glom onto floating particulate matter. […]

  • New study reveals Ulsan, South Korea, is exposed to yearlong toxic fine dust
    on July 13, 2018 at 1:51 pm

    A new study offers decisive proof that South Korea's Ulsan city is affected by toxic substances contained in fine dust particles, regardless of the season. […]

  • South Korea's polluted river basin
    on July 12, 2018 at 2:05 pm

    A new study shows that even though water quality has improved in South Korea's Han River basin since the 1990s, there are still higher-than-acceptable levels of pollutants in some of the more urbanized regions in and around the capital Seoul. […]

  • NASA surveys hurricane damage to Puerto Rico's forests
    on July 11, 2018 at 10:27 pm

    On Sept. 20, 2017, Hurricane Maria barreled across Puerto Rico with winds of up to 155 miles per hour and battering rain that flooded towns, knocked out communications networks and destroyed the power grid. In the rugged central mountains and the lush northeast, Maria unleashed its fury as fierce winds completely defoliated the tropical forests and broke and uprooted trees. Heavy rainfall triggered thousands of landslides that mowed over swaths of steep mountainsides. […]

  • Living in greener neighborhoods is associated with slower cognitive decline in elderly
    on July 11, 2018 at 10:27 pm

    Contact with greenspace is known to have beneficial effects for mental health. A new study suggests that it may also play a positive role against cognitive decline in elderly. In particular, this research shows that the loss in cognitive functions expected as part of the aging process is slightly slower in people who live in greener neighborhoods. […]

  • Reining in soil's nitrogen chemistry
    on July 11, 2018 at 4:24 pm

    The compound urea is currently the most popular nitrogen soil fertilizer. It's a way to get plants the nitrogen they need to grow. There's just one problem with urease: it works too well! New research suggests farmers may have a choice in how they slow the release of nitrogen, depending on their soil's acidity. […]

  • Different strategy of cycling teams in escape attempts
    on July 11, 2018 at 2:55 pm

    A new study based on wind tunnel research on a peloton of 121 cyclists may explain why so few 'breakaways' in professional cycling races, like this year's Tour de France, are successful. […]