There's no easy way to say this: You're eating too much chocolate, all of you. And it's getting so out of hand that the world could be headed towards a potentially disastrous scenario if it doesn't stop. Those are, roughly speaking, the words of two huge chocolate makers, Mars, Inc. and Barry Callebaut. And there's some data to back them up. Chocolate deficits, whereby farmers produce less cocoa than the world eats, are becoming the norm. Already, we are in the midst of what could be the longest streak of consecutive chocolate deficits in more than 50 years. It also...