Every year, during the first cold wave of the winter, this story climbs back into our most-read lists: What is the ideal winter indoor humidity level?

Every year, during the first cold wave of the winter, this story climbs back into our most-read lists: What is the ideal winter indoor humidity level? https://t.co/NXHVlJ1vT3 pic.twitter.com/KLE05jaVNS

— Star Tribune (@StarTribune) December 30, 2017