How Safe Are You From Covid When You Fly?

M. Gröndahl, T. Mzezewa and O. Fleisher – How Safe Are You From Covid When You Fly ?; New York Times, April 18 (2021)

To understand how risky it may be to board a flight now, start with how air circulates in a plane. More people are flying every day, as Covid restrictions ease and vaccinations accelerate. But …