Now Playing: 1-23-13 Marketplace

Apple announces its first quarter earnings for 2013. We consider whether Congress really needs to pass a budget at all. The number of unionized workers decreased again last year. McDonald's reported a $1.4 billion profit today, for which it can thank its dollar menu. The global economy’s biggest names are converging in Davos, Switzerland, for a week to talk big ideas, but some argue the conference is meaningless. Freakonomics Radio's Steven Levitt has a novel idea for helping people make tough decisions. And in the last of our author series on 'hope,' Margaret Atwood says hope is what keeps us going.