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Air pollution in Los Angeles has caused widespread concerns. In 2012, the Public Policy Institute of California (PPIC) Survey on Californians and the Environment showed that 45% of citizens in Los Angeles consider air pollution to be a "big problem", and 47% believe that the air quality of Los Angeles is worse than it was 10 years ago. [99]
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.
Air pollution has been associated with increased hospitalization and mortality and COPD (chronic obstructive pulmonary disease). [147] COPD is a common disease which causes breathing difficulties and is the fourth-largest cause of death globally. [148] Almost half of COPD deaths are due to air pollution. [143]
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. Health problems attributed to air pollution include premature death, cancer, organ failure, infections, behavioral changes, and other diseases.
Globally, the planet-heating pollution produced by billionaires is a million times higher than the average person outside the world’s wealthiest 10%, according to a report last year from the ...
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.
A code orange air quality alert means that air pollution concentrations within the region may become unhealthy for sensitive groups. Not all areas will be affected at the same time due to the ...
The images show what various parts of the country looked like before the air and water protections that exist today.