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Air pollution has dropped significantly in the U.S. since the 1970s. However, wildfires have emerged as a growing threat – making it harder to clean up the air and protect people’s health. As ...
Air pollution can occur naturally or be caused by human activities. [3] Air pollution causes around 7 or 8 million deaths each year. [4] [5] 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.
A study published in June found that air pollution killed 135 million people over the last four decades around the world, with India and China accounting for the bulk of the fatalities. In 2023 ...
Health consequences caused by exposure to polluted air depend on which chemicals are in the air, Pate said. But wildfire smoke is one the worst kinds of air pollution that people can breathe.
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.
There is evidence that air pollution, particularly particulate air pollution, increases the risk of cardiovascular, including cerebrovascular, disease. These diseases are known to have adverse effects on cognitive function. There is likely to be a causal association between particulate air pollution and effects on cognitive function in older ...
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.
What’s the top contributor to bad air in the winter? Particle pollution is often a result of fires, experts say. An AirNow study discovered that “wildfires contribute 15 to 30% of atmospheric ...