Air Quality

With some of the its cleanest air in decades, Beijing is warming up to some of the pollution-cutting regulations officials have enacted during the Olympics. Some may become permanent.

New research from the University of Cincinnati shows that nearly a third of U.S. schools are located within a quarter-mile of major highways, posing a significant air pollution threat to students.

Despite improved air quality, China says it has no plans to continue the car control measures it has enacted during the Olympics to clean the city's air.