Today's photo-of-the-day is from the streets of Saigon. There are motorbikes. Lots of motorbikes. Lots. Lots. Lots. Almost everyone on a motorbike wears a helmet. They also wear masks. But not for COVID-19, or at least not originally for that. Because this photo is a rerun of a POTD from 2015. Facemasks were everywhere even before the world had ever heard of COVID-19. When we visited in 2015, our assumption was that the motorcyclists were trying to keep from breathing exhaust fumes in the polluted air of the city. Maybe the habit of wearing facemasks had a beneficial side effect. Vietnam kept coronavirus deaths to just 35, and grew its economy in 2020.