How the pandemic wiped the smile off our faces (literally)

Put a mask on and you lose the subtlest form of communication. Non-verbal interactions play a massive role in the way humans communicate with each other, and even in this regard, the pandemic also seems to be having an effect. In this piece for The Economist's 1843 magazine, Ann Wroe reflects on the subtleties we lose by something as simple as not being able to see a smile on someone's face.