A few days ago, the value of all the bitcoins in the world blew past $1 billion for the first time ever. That’s an impressive achievement, for a purely virtual currency backed by no central bank or other authority. It’s also temporary: we’re in the middle of a ...

While Tim Cook has dropped hints that Apple Inc. (AAPL) is hard at work on a television to drive the next era of growth, the company’s wristwatch-style device, still in development, may prove more profitable. The global watch industry will generate more than $60 billion in sales in ...

The first time I interviewed Ezra Klein, the 28-year-old prince of D.C. media, he brought me a sandwich: prosciutto on a poppy-seed baguette. (Also, chips and a beverage.) We were in the back of a chauffeured black town car, sent by the Washington Speakers Bureau, to take Klein ...