A couple hugs in front of a stained glass panel in Novoslobodskaya metro station, in Moscow, Russia. Lucy Nicholson / Reuters More From Quartz Dubai’s Reckless Foreign Policy Is Putting It on a Path to Disaster—and Fast Photos: A Family of Kurdish Refugees Is Living in a Moscow Airport Lounge Nepal Just Elected Its First Female President Do you greet a stranger by kissing them on the cheek or giving them a firm handshake?