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Foggy morning skyline view of downtown Los Angeles with steaming

Pollution and COVID-19 risk

Foggy morning skyline view of downtown Los Angeles with steaming Southbay refineries and industrial facilities in background. By trekandphoto : https://stock.adobe.com/contributor/200915016/trekandphoto?load_type=author&prev_url=detail

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Aging & Geriatrics

Photobiomodulation, the use of light waves to change human biology, has boomed in recent years for all kinds of purposes, at medical clinics and at home. We wanted to know what the science says — and doesn’t say.