And University of California San Diego researcher John Pierce says heavy smoking rates dropped more in California than in other states.

加州大学圣地亚哥分校的研究员约翰·皮尔斯说，加州老烟枪比率的下降，比其它各州都快。

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"I think it is due to the strong ethic of the people, " says John Pierce.

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"This work is, frankly, without peer, " says John Pierce, a vice president at DuPont.

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John Pierce published his first fiction in 1930 in Science Wonder Stories.

ECONOMIST: John Pierce