Some key events and adult smoking rates in the fight over tobacco during the last 50 years:
1964: U.S. surgeon general report concludes smoking causes lung cancer.
1965: Warning labels required on cigarette packs; adult smoking rate 42.4 percent.
1971: TV and radio commercials for cigarettes banned.
1972: Airlines told to provide no-smoking sections.
1987: Aspen, Colo., becomes first U.S. city to ban smoking in restaurants; adult smoking rate 28.8 percent.
1988: Smoking banned on short domestic airline flights.
1998: Forty-six states reach $206 billion settlement with cigarette makers; adult smoking rate 24.1 percent.
2000: Smoking prohibited on international flights.
2009: Food and Drug Administration authorized to regulate tobacco products; adult smoking rate 20.6 percent.
2014: U.S. surgeon general report adds more diseases to the long list of cigarettes' harms, urges new resolve to make the next generation a smoke-free generation; adult smoking rate about 18 percent.
Source: U.S. Centers for Disease Control and Prevention