While pollution outdoors poses a significant health risk for people, worsening indoor air quality has also gradually become a pressing issue that needs to be addressed. Annually, almost 4 million ...
ATLANTA, GEORGIA - JUNE 25: Cars and trucks drive along Interstate 75/85 June 25, 2003 in Atlanta, Georgia. The first "Code Red" smog alert was of the year was announced with tailpipe and smokestack ...
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