A new study suggests that face masks have a negligible negative effect on the levels of carbon dioxide and oxygen that a person breathes. All data and statistics are based on publicly available data ...
Experts say that the level of carbon dioxide in indoor air is an easy proxy for potential COVID-19 exposure. Outdoor air typically has less than 400 ppm of carbon dioxide. My measurements showed CO2 ...
Evidence continues to mount that mask mandates were perhaps the worst public-health intervention in modern American history. While concluding that wearing masks “probably makes little or no difference ...
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