The app-based car service Uber has had a big year for business --€” and controversy. Ariel Zambelich/NPR hide caption

itoggle caption Ariel Zambelich/NPR

A New York Stock Exchange trader works on the floor on Dec. 17. Stocks rose nearly 300 points after the Federal Reserve announced it plans to begin raising interest rates next year. Andrew Burton/Getty Images hide caption

itoggle caption Andrew Burton/Getty Images

The Carrolls, who once raised cattle, decided three decades ago to raise Christmas trees instead. The trees take seven to 12 years to mature. Courtesy of Claybrooke Farm hide caption

itoggle caption Courtesy of Claybrooke Farm

Cows rotate in the milking parlor at Fair Oaks Farms, a large-scale dairy and tourist attraction, near Rensselaer, Indiana. Dan Charles/NPR hide caption

itoggle caption Dan Charles/NPR

The city of Pittsburgh is hoping that drawing more skilled immigrants will give it an entrepreneurial boost. Gene J. Puskar/AP hide caption

itoggle caption Gene J. Puskar/AP

The Alamo Drafthouse theater chain will show The Interview starting on Christmas Day. Paul J. Richards/AFP/Getty Images hide caption

itoggle caption Paul J. Richards/AFP/Getty Images

Fuel prices have plummeted this year, but airfares have remained high. The International Air Transport Association estimates that the world's airlines will rake in nearly $20 billion in profits this year. Brennan Linsley/AP hide caption

itoggle caption Brennan Linsley/AP

Nissan workers at a plant in Canton, Miss. The auto company received financial incentives, including tax relief, from the state for the factory. Rogelio V. Solis/AP hide caption

itoggle caption Rogelio V. Solis/AP

A poster for The Interview. Some theaters now say they will show the comedy, which Sony Pictures had pulled following threats. Jim Ruymen/UPI /Landov hide caption

itoggle caption Jim Ruymen/UPI /Landov