Now Playing: 1-30-13 Marketplace

The economy shrunk for the first time since 2009, but the decline isn’t causing too much panic. JCPenney has decided to bring back sales and discounts. The president’s two-year-old council on job creation closes up shop this week -- we look back at what they accomplished. Harvard University will study the link between football and concussions over the next decade. There’s a smog cloud over Eastern China that’s three times the size of California. Immigration reform could mean rising wages, and that could affect small businesess. And in the latest BURN story, Alex Chadwick reports on the innovation to build the fastest car in the world.