"Air pollution is the contamination of air due to the presence of substances in the atmosphere that are harmful to the health of humans and other living beings, or cause damage to the climate or to materials."
The study of the presence and effects of pollutants in the air on human health and the environment.
"There are many different types of air pollutants, such as gases (including ammonia, carbon monoxide, sulfur dioxide, nitrous oxides, methane and chlorofluorocarbons), particulates (both organic and inorganic), and biological molecules."
"Air pollution can cause diseases, allergies, and even death to humans; it can also cause harm to other living organisms such as animals and crops, and may damage the natural environment or built environment."
"Air pollution can be caused by both human activities and natural phenomena."
"The human health effects of poor air quality are far-reaching, but principally affect the body's respiratory system and the cardiovascular system."
"Many of the contributors of air pollution are also sources of greenhouse emission, i.e., burning of fossil fuel."
"Air pollution is a significant risk factor for a number of pollution-related diseases, including respiratory infections, heart disease, chronic obstructive pulmonary disease (COPD), stroke, and lung cancer."
"Growing evidence suggests that air pollution exposure may be associated with reduced IQ scores, impaired cognition, increased risk for psychiatric disorders such as depression, and detrimental perinatal health."
"Outdoor air pollution attributable to fossil fuel use alone causes ~3.61 million deaths annually, making it one of the top contributors to human death, with anthropogenic ozone and PM2.5 causing ~2.1 million."
"Overall, air pollution causes the deaths of around 7 million people worldwide each year, or a global mean loss of life expectancy (LLE) of 2.9 years."
"Air pollution is the world's largest single environmental health risk, which has not shown significant progress since at least 2015."
"Various pollution control technologies and strategies are available to reduce air pollution."
"Local rules, when properly executed, have resulted in significant advances in public health. Some of these efforts have been successful at the international level, such as the Montreal Protocol, which reduced the release of harmful ozone-depleting chemicals, and the 1985 Helsinki Protocol, which reduced sulfur emissions."
"Productivity losses and degraded quality of life caused by air pollution are estimated to cost the world economy $5 trillion per year."
"90% of the world's population breathes dirty air to some degree."
"Although the health consequences are extensive, the way the problem is handled is considered largely haphazard or neglected, albeit sometimes being moderately regulated and monitored."
"Indoor air pollution and poor urban air quality are listed as two of the world's worst toxic pollution problems."
"Air quality is closely related to the earth's climate and ecosystems globally."
"Some of these efforts have been successful at the international level, such as the Montreal Protocol, which reduced the release of harmful ozone-depleting chemicals, and the 1985 Helsinki Protocol, which reduced sulfur emissions."
"The scope of the air pollution crisis is large, and the problem has not shown significant progress since at least 2015."