Let's move

First Lady Michelle Obama is leading the new government initiative "Let's Move" to reduce obesity in kids. Let's Move is a comprehensive effort to combine healthier decision making about food and exercise with environments that help make those decisions easier.

As part of the initiative, a number of nudges will be used, including

1) Consumer friendly labels that take into account the actual sizes Americans now eat and are visible on the front of food packages.

2) Tax incentives to encourage...