"WARNING UNMASK YOUR KIDS! Any Carbon Dioxide concentrations above 2000ppm is dangerous!" The post was flagged as part of Facebook’s efforts to combat false news and misinformation on its News Feed.

The TikTok video shows a blond child wearing a white face mask. To her left, an orange device takes readings. "1,376. 1,536. 1,769," a voice says in the clip. "2,125. So remember: Anything over 2,000 ...

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 ...

Wearing of masks has become mandatory in many states Researchers ranked which among the common masks are the most to least effective N95 masks are still the most effective at curbing the spread of the ...

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 ...