Transporation

International air travel to and from the U.S. has more than doubled in the last 20 years to 152 million trips in 2011 according to a new report from the Bookings Institution.

The new Barclays Center Arena in Brooklyn can accommodate 18,000 people, but it offers just a few hundred parking spots.

The majority of Americans still drive alone in a car to and from work. But in cities and states across the nation, the commuter population is turning to carpools, public transportation, walking, and bikes.