Pollution - National Geographic Society
WEBMar 6, 2024 · Pollution is the introduction of harmful materials into the environment. These harmful materials are called pollutants. Pollutants can be natural, such as volcanic ash. They can also be created by human activity, such as trash or runoff produced by factories. Pollutants damage the quality of air, water, and land.
Pollution - Wikipedia
WEBPollution is the introduction of contaminants into the natural environment that cause adverse change. Pollution can take the form of any substance (solid, liquid, or gas) or energy (such as radioactivity, heat, sound, or light). Pollutants, the components of pollution, can be either foreign substances/energies or naturally occurring contaminants.
Pollution | Definition, History, Types, & Facts | Britannica
WEBMay 10, 2024 · Pollution, addition of any substance or form of energy to the environment at a rate faster than it can be dispersed or stored in a harmless form. The major kinds of pollution are usually classified by environment and include air, water, and land pollution. Learn more about the history of pollution.
Air Pollution - National Geographic Society
WEBMar 6, 2024 · Air pollution consists of chemicals or particles in the air that can harm the health of humans, animals, and plants. It also damages buildings. Pollutants in the air take many forms. They can be gases, solid particles, or liquid droplets. Sources of Air Pollution Pollution enters the Earth's atmosphere in many different ways.
Air Pollution - Our World in Data
WEBAir pollution is one of the world's largest health and environmental problems. It develops in two contexts: indoor (household) air pollution and outdoor air pollution. In this topic page, we look at the aggregate picture of air pollution – both indoor and outdoor.
How air pollution is destroying our health
WEBOct 29, 2018 · There are two main types of air pollution: ambient air pollution (outdoor pollution) and household air pollution (indoor air pollution). Ambient air pollution is a major environmental health problem affecting everyone in low-, middle-, and high-income countries as its source – combustion of fossil fuel – is ubiquitous.
Air pollution - World Health Organization (WHO)
WEBMar 18, 2024 · Spotlight. Air pollution kills an estimated seven million people worldwide every year. WHO data shows that 9 out of 10 people breathe air containing high levels of pollutants. WHO is working with countries to monitor air pollution and improve air quality.
Air pollution | Effects, Causes, Definition, & Facts | Britannica
WEB4 days ago · Air pollution, release into the atmosphere of various gases, finely divided solids, or finely dispersed liquid aerosols at rates that exceed the natural capacity of the environment to dissipate and dilute or absorb them. High concentrations can cause undesirable health, economic, or aesthetic effects.
Air pollution - Wikipedia
WEBAir pollution - Wikipedia. Contents. hide. (Top) Sources of air pollution. Pollutants. Exposure. Indoor air quality. Health effects. Agricultural effects. Economic effects. Other effects. Historical disasters. Reduction and regulation. Hotspots. Cities. Projections. See also. References. Further reading. External links.
Air pollution, facts and information - National Geographic
WEBFeb 4, 2019 · Air pollution is a mix of particles and gases that can reach harmful concentrations both outside and indoors. Its effects can range from higher disease risks to rising temperatures. Soot, smoke,...
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