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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.
Hydrogen fluoride and sulfur dioxide emissions from U.S. Steel's Donora Zinc Works and its American Steel & Wire plant were frequent occurrences in Donora. What made the 1948 event more severe was a temperature inversion, a situation in which warmer air aloft traps pollution in a layer of colder air near the surface.
The Golden State has the worst air quality of any state in the US, according to a new report from the United Health Foundation. The report measured air quality by the average person's exposure ...
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.
The American Lung Association just published their annual State of the Air report, which shows California as the most polluted state in America.
Southern California air regulators adopted a rule that has forgiven more than $200 million in pollution fees from facilities that emit smog-forming chemicals. SoCal has the worst smog in the nation.
A view toward the Chrysler Building from the Empire State Building amid the six-day smog of November 1953, estimated to have caused at least 200 deaths. [14]Even before the 1966 smog episode, scientists, city officials, and the general public recognized that New York City—and most other major American cities—had serious air-pollution problems. [15]
While Southern California and parts of the East Coast typically have the worst air pollution in the United States, as a result of the wildfire smoke billowing in from Canada, several counties in ...