Do Masks Really Work?

यह पेज हिंदी में उपलब्ध नहीं है| अंग्रेजी में देखें| For the sake of viewer convenience, the content is shown below in the alternative language. You may click the link to switch the active language. When a billion people in China (and quite a few expats) woke up to the severe air pollution in almost every […]

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Is PM2.5 Worse on the Subway?

यह पेज हिंदी में उपलब्ध नहीं है| अंग्रेजी में देखें| For the sake of viewer convenience, the content is shown below in this site default language. You may click one of the links to switch the site language to another available language. I wear a pollution mask in Beijing, and I’ve always taken it off […]

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NPR got these facts about masks wrong

यह पेज हिंदी में उपलब्ध नहीं है| अंग्रेजी में देखें| For the sake of viewer convenience, the content is shown below in the alternative language. You may click the link to switch the active language. As wildfires were raging across the American West this summer, NPR ran a story on what people can do to […]

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Is It True That Masks Last Just One Day?

यह पेज हिंदी में उपलब्ध नहीं है| अंग्रेजी में देखें| For the sake of viewer convenience, the content is shown below in this site default language. You may click one of the links to switch the site language to another available language. We posted info and data on our findings on whether masks really can […]

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How much pollution do we breathe every day?

यह पेज हिंदी में उपलब्ध नहीं है| अंग्रेजी में देखें| For the sake of viewer convenience, the content is shown below in this site default language. You may click one of the links to switch the site language to another available language. How much pollution do we actually breathe in every day? Are masks or […]

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Surgical Masks Surprisingly Effective Against PM2.5

यह पेज हिंदी में उपलब्ध नहीं है| अंग्रेजी में देखें| For the sake of viewer convenience, the content is shown below in this site default language. You may click one of the links to switch the site language to another available language. There’s a fantastic educational poster from Greenpeace that I’ve seen in several places […]

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Shanghai Technical Inspection Bureau Mask Tests

यह पेज हिंदी में उपलब्ध नहीं है| अंग्रेजी में देखें| For the sake of viewer convenience, the content is shown below in the alternative language. You may click the link to switch the active language. It’s tough to get good mask data on a wide range of consumer masks. I’ve posted some of my own test […]

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Poor Man’s Fit Test

यह पेज हिंदी में उपलब्ध नहीं है| अंग्रेजी में देखें| For the sake of viewer convenience, the content is shown below in this site default language. You may click one of the links to switch the site language to another available language. Which mask works best on your face? I was fortunate enough to visit […]

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Comparison: Is a 450 RMB DIY filter as effective as a $1,000 IQ Air?

यह पेज हिंदी में उपलब्ध नहीं है| अंग्रेजी में देखें| For the sake of viewer convenience, the content is shown below in this site default language. You may click one of the links to switch the site language to another available language. When the “airpocalypse” struck Beijing, I got out my credit card to give $1,000 […]

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