Excerpts from the United State Environment Protection Agency (EPA) web site:
"Research indicates that people spend approximately 90 percent of their time indoors" "EPA's studies found levels of about a dozen common organic pollutants to be 2 to 5 times higher inside homes than outside, regardless of whether the homes were located in rural or highly industrial areas." https://www.epa.gov/indoor-air-quality-iaq/inside-story-guide-indoor-air-quality |
Findings of a study commissioned by the UK Clean Air Day campaign in 2019:
"Indoor air pollution is over three times worse than outdoor air pollution, with campaigners calling UK households ‘toxic boxes’ due to the number of air pollution particles trapped inside." https://airqualitynews.com/2019/05/15/uk-homes-toxic-boxes-due-to-indoor-air-pollution/ |
aura_air_limited_-_privacy_policy_-_version_1.0.pdf | |
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