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What is good air quality?

Clean air is vital for our health, the environment, and even the economy. But what exactly constitutes good air quality? Read on to find out. What is air quality? The air we breathe is made up of 78% nitrogen, 21% oxygen, and other gases…
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How much did EU cities and states pay in air pollution fines in recent years?

The recent decision of the European Court of Justice to condemn Germany for too high levels of air pollution has put the spotlight back on the European Union's legal action on environmental justice.  But exactly what dimensions are we talking…
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Is air quality improving? A perspective on Germany, the EU, the United States and the rest of the world

The impact of poor air quality is well-documented and widely researched. While it is an ongoing issue that is currently being addressed through various legislations and guidelines all over the world, are our efforts actually clearing the air…
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How to measure air quality

The importance of monitoring air quality is evident in the impact pollutants have on human health, the environment, and the economy. By assessing the extent of air pollution through timely, accurate data, policies and standards can be enacted,…
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The impact of air pollution on mental health

When talking about the negative effects of air pollution, a lot of focus is placed on the physical diseases that occur from pollutant exposure. But did you know that air pollution affects mental health as well? Read on to find out more. Research…
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How climate change makes air pollution worse

There is clear evidence that air pollution has direct and indirect climate effects. This is also true the other way around: climate change worsens air quality. How warmer temperatures worsen air quality Ground-level ozone (O3) is a secondary…
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How air pollution exacerbates social inequality

While air pollution is a global issue, killing 7 million worldwide every year, those from different socioeconomic backgrounds feel its effects differently. We have previously written about why air pollution seems to disproportionately affect…
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The difference between emission and immission

The term “emission” is commonly used to describe the releasing of pollutants into the atmosphere. Recently, however, a new, similar term has appeared in the air pollution lexicon: “immission”. What exactly is “immission”? How is…
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Why is air pollution a bigger topic in developing countries than in developed nations?

While it is undeniable that air pollution affects everyone, scientific studies, the news, and even international agencies make it seem as though it is more of a significant issue in developing countries than in developed ones. What is the basis…
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What is temperature inversion, and how does it exacerbate smog?

While most people are familiar with the fact that smog is caused by severe air pollution, few know that the weather can also be at fault thanks to a phenomenon called “temperature inversion”. Read on to find out more.  What is smog? To…
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5 steps to make your city smarter with air quality data

Urban air pollution directly affects populations living in and around urban areas. Worldwide, 1.3 million people die every year from outdoor air pollution in urban areas. The benefits of managing this issue are endless: healthier citizens, a…
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What is particulate matter composed of?

Particulate matter (PM) is an air pollutant composed of tiny solid and liquid particles. But what exactly are these particles? Read on to find out. What is particulate matter? Particulate matter is classified by the size of its particles.…