Air in San Diego County remains unhealthy, especially in Oceanside and Chula Vista, said Bill Brick, senior meteorologist for the Air Pollution Control District.

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Because of the smoke, ash and winds, people in affected areas were urged to be cautious and to avoid unnecessary outdoor activities, the Ventura County Air Pollution Control District said.

CNN: Fire rages in California even as winds die down

Air pollution control devices were mandated on cars.

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"It is necessary to introduce a 'Clean Air Act' on a national level to clarify the responsibilities of the national government at all levels, companies and the individual in air pollution control, " urges The Beijing News.

BBC: China media: Pollution woes

The Beijing News backs a proposal by the capital's mayor to follow the example of the Yangtze River Delta and Pearl River Delta regions and set up a joint air pollution control system between Beijing, Tianjin and Hebei.

BBC: China media: Death of Chavez

The approximate stand-still of global temperature during 1940-1975 is generally attributed to an approximate balance of aerosol cooling and greenhouse gas warming during a period of rapid growth of fossil fuel use with little control on particulate air pollution, but quantitative interpretation has been impossible because of the absence of adequate aerosol measurements.

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When we put in place new common-sense rules to reduce air pollution, we create new jobs building and installing all sorts of pollution-control technology.

WHITEHOUSE: President Obama Speaks to Environmental Protection Agency Staff | The White House

We can and should control surface pollution as that effects air quality yet there is a huge difference between controlling air quality as that remains constant in cold or warm environments while temperatures constantly fluctuate from day to night, month to month and year to year, in the Western isles of Europe we are having a particularly cool and wet summer.

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