Terminal One at O’Hare International Airport. (Antonio Perez/ Chicago Tribune)

From BusinessWeek | Chicago’s O’Hare International Airport is now the world’s fourth busiest. It was surpassed last year by Beijing Capital International Airport, which now ranks No. 3 — Atlanta’s Hartsfield-Jackson Airport still holds the No. 1 spot, and London’s Heathrow Airport is ranked No. 2. Beijing grabbed third place after its passenger total jumped 17 percent to 65.3 million, thanks to increasing demand
for travel throughout Asia and overseas.

Get the full story: businessweek.com.