Interesting. What do you think?

But now a Norway–based company, Airthings, has created the Airthings Wave that uses digital sensors and smart home technology to measure radon levels over a long period of time.

“[Charcoal] is the traditional way,” Airthings CEO Øyvind Birkenes told Fox News. “We are going electronically, which enables you to monitor 24/7 over long periods of time — many, many years. And that’s important, because radon gas fluctuates significantly over time. Over a day, it’s amazing how much it changes.”....

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