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As Covid masks go off, here’s how we can still breathe easy: CO2 ...

World

As Covid masks go off, here’s how we can still breathe easy: CO2 monitors

For weeks I carried a device to measure levels of carbon dioxide in indoor spaces, and this is what I found

Emma Court

My boyfriend wasn’t feeling well. Then again, that wasn’t too surprising.

We had just spent a weekend at New Orleans’ annual jazz festival, where we spent long days baking in 32°C weather and drinking plenty of beer to stay cool. But hangovers and heatstroke weren’t the only potential culprits.

The risk of Covid-19 was everywhere. I knew that because for weeks I had been carrying around a palm-sized, $150 carbon dioxide monitor that assesses exactly that...

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