When you think of moss, you may conjure up images of dense woods. But a new restaurant on the Plaza features a moss wall. We talk to the local artist who created it, and we hear his vision for a harmonious life. Plus: As one of the most significant tax bills in recent history gets ironed out, there has been talk about what it could do for the middle class. What is the middle class — and what does it mean to be middle class today? Guests: Morten Klinte, plant artist, The Fat Plant Society Frank