Many of the world's billionaires fly in their own planes. We got a taste of that high life when we toured a private jet in Doha — and the interiors were like a 5-star hotel room. This surge tracks ...

First-class fliers have a code. It’s subtle and usually comes with a glass of champagne. If you want fit in before you fall flat in a sea of stares, learn the unspoken rules—lest you mistake the amuse ...