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Air quality in the moderate range can still be risky for people who are unusually sensitive to air pollution. On Jan. 8, however, the average daily AQI score was 189, which signifies "unhealthy ...
Black and Hispanic communities are often overburdened with air pollution and emissions from trash incinerators, chemical plants, and oil refineries […]
“Indoor air can be more polluted than outdoor air, depending on where you live, what kind of materials your home was made from, how you cook your food, how you clean, etc.,” says Sarah ...
Air pollution can occur naturally or be caused by human activities. [4] Air pollution causes around 7 or 8 million deaths each year. [5] [6] It is a significant risk factor for a number of pollution-related diseases, including heart disease, stroke, chronic obstructive pulmonary disease (COPD), asthma and lung cancer.
Looking down from the Hollywood Hills, with Griffith Observatory on the hill in the foreground, air pollution is visible in downtown Los Angeles on a late afternoon.. Air pollution is the introduction of chemicals, particulate matter, or biological materials into the atmosphere that cause harm or discomfort to humans or other living organisms, or damage ecosystems.
Various definitions of pollution exist, which may or may not recognize certain types, such as noise pollution or greenhouse gases.The United States Environmental Protection Administration defines pollution as "Any substances in water, soil, or air that degrade the natural quality of the environment, offend the senses of sight, taste, or smell, or cause a health hazard.
"Unhealthy levels of pollution are present not only in the ocean, but sewage that washes up on land, dries up and sends dangerous levels of hydrogen sulfide into the air around people's homes ...
Air pollution is caused predominantly by burning fossil fuels, cars, and much more. [4] Natural sources of air pollution include forest fires, volcanic eruptions, wind erosion, pollen dispersal, evaporation of organic compounds, and natural radioactivity. These natural sources of pollution often soon disperse and thin settling near their locale.