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The Nuance

Do You Really Need an Air Purifier?

What they can and can’t do, and why some air purifiers may come with risks

DDuring the back half of the 19th century — a time when tuberculosis was widespread in smog-choked cities across the United States and Europe — fresh air was thought to be a for diseases of the mind and body. This was the…




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Markham Heid

Markham Heid

I write about health, science, and psychology. My work has appeared in Time magazine, the New York Times, Vice, and elsewhere. I live in Germany.

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