Hong Kong airport is scrambling to deal with a backlog of 500 cancelled flights for about 100,000 passengers, with some people waiting there since Saturday amid the upheaval caused by Typhoon Wipha. Chris Au Young, the Airport Authority’s general manager of terminal and passenger experience, said on Sunday afternoon that about 400 rescheduled flights would either depart or arrive in Hong Kong later in the day as the typhoon moved away from the city and weakened. “More than 500 flights were...