Some key events 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.
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.
1988: Smoking banned on short domestic airline flights.
1998: Forty-six states reach $206 billion settlement with cigarette makers.
2000: Smoking prohibited on international flights.
2009: Food and Drug Administration authorized to regulate tobacco products.