The problem here isn’t the kale, of course — it’s all the other stuff McDonald’s puts on top of the kale ... and 1,400 milligrams of salt. A Double Big Mac, meanwhile, has 680 calories ...

McDonald’s is known for cheap eats, but its most expensive menu item might surprise you – and it’s not available everywhere.

The “Big Mac Index” was created in the 1980s by economists looking to evaluate the relative levels of affordability among various countries and currencies. The idea was that McDonald’s Big ...