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Study: Air purifier use at daycare centres cut kids' sick days by a third (yle.fi)

submitted 2 years ago by [email protected] to c/[email protected]

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[–] [email protected] 18 points 2 years ago

There was a leak at a methane storage facility in the LA area. Several schools were provided air filters well after the event (methane is lighter than air). They had the filters for four months even though the methane levels were normal. Test scores increased.