It's no secret that McDonald's Big Mac is one of the most popular things on the menu—in fact, it's reported that the fast ...

Learn how the Big Mac Index uses burger prices to compare global purchasing power parity, its significance in economics, and real-world applications.

Add Yahoo as a preferred source to see more of our stories on Google. The McDonald’s Big Mac is more than a fast-food menu item. Since it debuted in 1967, the burger - which, as the ear-worm jingle ...