How CO2 sensors might help us return to ‘normal’

How CO2 sensors might help us return to ‘normal’


One of the things we’ve learned over the past year is to be wary of the air around us — especially indoors. If other people are around, exhaling, they’re filling the space with their breath. If one of those people has COVID-19, they could be filling the space with infectious breath.

There’s a way to make indoor spaces safer, though: improving the ventilation to make sure the air doesn’t stay trapped. That way, any potentially infectious particles quickly gust away, instead of lingering for someone else to breathe in.

Experts say one way to measure how well-ventilated certain spaces are is by checking how much carbon dioxide is in the air. People exhale carbon dioxide, so the amount of it in a room gives you an idea of how much of the…

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