Airbnb needs people to feel safe. Since the coronavirus pandemic started, the company added new cleaning guidelines and a 72-hour buffer between stays.
Still, with more than 4.9 million coronavirus cases recorded around the world, people are understandably paranoid about staying in a stranger's home.
That's probably why you've seen ads for UV light products online, like wands that promise to kill viruses and bacteria. But just how effective are they?
The basics: UVA and UVB vs. UVC
Unlike UVA and UVB, UVC is absorbed completely by the atmosphere.
Image: Shutterstock / Siberian Art
There are several kinds of UV light, explained Andrea Armani, a professor of chemical engineering and material science at the University of Southern California. Read more...
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