The Invisible Enemy Scientists Weigh the Benefits of Air Purifiers in Fighting COVID-19

Coronavirus pathogens can float in the air for hours, which is a significant threat. Researchers are developing ideas for how to prevent infections in schools, restaurants and offices using ventilation equipment, air filters and UV radiation.
A school in the German city of Schwerin, where classes resumed this week after the coronavirus lockdown and the summer holidays.

A school in the German city of Schwerin, where classes resumed this week after the coronavirus lockdown and the summer holidays.

Foto: Jens Büttner / dpa
DER SPIEGEL 33/2020
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