Broadly

The Big Mac Index turns 40, and here’s the beef: It’s still relevant

The Big Mac Index, created by The Economist, turned 40 years old. It compares the price of a Big Mac burger in different countries to show if currencies are overvalued or undervalued. The index shows that burgers tend to be cheaper in many Asian countries. Some analysts say this suggests those currencies may be weaker than the U.S. dollar.