The Economist has issued its latest Big Mac Index which uses the price of McDonald's hamburgers to compare international currencies. The fast food dish is a funny but apt international measuring stick, since its 31,000 stores in 119 countries make it a widespread global phenomenon. But all those burgers are telling essentially the same story, at least as it relates to China: the yuan is severely undervalued. That might be bad for foreign economic competition, but it’s good for us — the Chinese burger, at $1.41, is the second most affordable in the world, beat out by India for the cheapest spot by a single cent. And people wonder where the Chinese obesity epidemic comes from. more ›