While the full economic impacts of Covid-19 are far from clear, this novel coronavirus has already exacted a major toll on the global aviation and tourism industries. In some cases, formal travel restrictions have been imposed, but in many other cases business and leisure travellers are exercising caution and choosing to travel only in the most urgent of circumstances. Pictured here are barrier tapes, but no travellers, in front of check-in counters in a departure hall at Chubu Centrair International Airport in Tokoname, Japan. Photograph: Kiyoshi Ota for Bloomberg