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The Air We Breathe

The Question: How many quarts of air does a human being breathe every minute? The Answer: We breathe about 6.5 quarts of air in and out every minute…

America's 25 Most Ozone-Polluted Cities, 2007

Ozone acts as a powerful respiratory irritant at the levels frequently found in most of the nation's urban areas during summer months. Symptoms include shortness of breath, chest pain…

smoking

(Encyclopedia) smoking, inhalation and exhalation of the fumes of burning tobacco in cigars and cigarettes and pipes; in the 21st cent., vaping, the similar use of e-cigarettes, also has become…