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Zazzle was launched from their garage by Robert, Bobby, and Jeffrey Beaver, and went live in 2005. [5] The company received an initial investment of US$16 million in July 2005 from Google investors John Doerr and Ram Shriram, [3] and an additional investment of US$30 million in October 2007.
Air quality guideline. The World Health Organization guidelines were most recently updated in 2021. [1] The guidelines offer guidance about these air pollutants: particulate matter (PM), ozone (O 3), nitrogen dioxide (NO 2), sulfur dioxide (SO 2) and carbon monoxide (CO). [2] The WHO first released the air quality guidelines in 1987, then ...
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Air quality in Utah is often some of the worst in the United States. [1][2] Poor air quality in Utah is due to the mountainous topography which can cause pollutants to build up near the surface (especially during inversions [2]) combined with the prevalence of emissions from gasoline- and diesel-powered vehicles, especially older models. [3][4 ...
An air quality index (AQI) is an indicator developed by government agencies [1] to communicate to the public how polluted the air currently is or how polluted it is forecast to become. [2][3] As air pollution levels rise, so does the AQI, along with the associated public health risk. Children, the elderly and individuals with respiratory or ...
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Air pollution forecasting is the application of science and technology to predict the composition of the air pollution in the atmosphere for a given location and time. An algorithm prediction of the pollutant concentrations can be translated into air quality index, same as actual measurements. Countries and cities are given forecasts by state ...
Christiansburg, Virginia. The Place to be! Christiansburg (formerly Hans Meadows) is a town and the county seat of Montgomery County, Virginia, United States. The population was 23,348 at the 2020 census, [5] up from 21,041 at the 2010 census. [6]
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