Nutrition profiling systems: New global standard?

A trip to the grocery store can be confusing, as it is not always clear how healthy or unhealthy certain foods are for us. However, many countries around the world are addressing this issue with nutrition profiling systems. These systems offer an easy-to-understand grading scale that indicates the nutritional value of various foods. How does this grading system work, and should it become a global standard? / How to raising an empathetic child (19:55). On the show: Steve Hatherly, Laiming & Fei Fei