Clean Classroom AirStudent-Built Air Purifiers Tackle Wildfire Smoke & Covid-19
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‘An added layer’: Trinity students make homemade air purifiers for Ascension classrooms
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Do-It-Yourself Portable Air Cleaners
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Parents worried about Covid in schools have an easy weapon at hand, experts say — fresh air
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Why Ventilation Is a Key to Reopening Schools Safely
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Experts offer advice on air purifiers for classrooms
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As America struggles to reopen schools and offices, how to clean coronavirus from the air
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