Cathy O'Neil, Columnist

This App Could Solve a Big Reopening Problem

People need a way to crowdsource data on indoor air quality.

Breathe.

Photographer: Waldo Swiegers/Bloomberg
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Ventilation is perhaps the most underappreciated challenge of reopening during the Covid-19 pandemic. As people increasingly return to indoor spaces such as office buildings, airports, schools and restaurants, they’ll need plenty of outside air, so they won’t walk into a cloud of coronavirus spray. But how can they trust building managers to ensure it’s safe to breathe?

They can’t. Which is why I think people need to cooperate – with the help of technology – to monitor air quality themselves.