"It's not definitely known what's triggering the higher smoking rates in this population."

California's adult smoking rate has dropped nearly 50% since the state began the nation's longest-running tobacco control program in 1988.

The resources that are spent on medical school and hospital training might not be realized fully if physicians die prematurely from higher smoking rates.

For example, elevated air pollution may lead to lower housing prices, which in turn attracts poorer households with higher smoking rates.

A joint US-Canadian study found slightly higher smoking rates among Canadians.

Korean-Americans have higher smoking rates than the general population in the United States.

Native Americans have much higher smoking rates than the white, black, and Asian demographics.

Indiana has one of the highest ranking youth smoking rates in the country.

Nationwide, the adult smoking rate is 25 percent.

The project aims to reduce the adult and yoth smoking rates and exposure to secondhand smoke across the city.