Why does the US drive on the right and the UK on the left? Your travel questions answered
Editor’s Note: Sign up for Unlocking the World, CNN Travel’s weekly newsletter. Get the latest news in aviation, food and drink, where to stay and other travel developments. In this week’s travel roundup, we bring you transport trivia, Roman engineering marvels and the world’s tastiest dumplings. You’re probably aware that around 30% of the world’s countries…