Covid spreads more easily in dry indoor air. Does that mean we should buy humidifiers? One study finds that Covid spreads the least at 40 to 60 per cent humidity. Can a humidifier save your holiday party from becoming a spreading event?
A cold house can be harmful to your health More people die in the winter than during summer. The elderly should keep at least one room in their house at 24 degrees or warmer, professor advises.