PEK is Beijing's main international airport located 32 km from city center. Smoking allowed only outside terminal before security check. Smoking areas located on 4th floor near Gates 3 and 4
Japan has 20 million smokers, with 14.8% adult smoking rate (2022). Per capita consumption was 1,583 cigarettes in 2016, down from 3,497 in 1977. Government controls tobacco industry through Ministry of Finance and Health
Smoking began in Mesoamerica 5000-3000 BC as incense-burning ritual. Tobacco introduced to Eurasia by European colonists in late 17th century. Initially faced criticism from rulers and religious leaders. By mid-17th century, most major civilizations adopted tobacco
Cotinine is a tobacco alkaloid and nicotine's predominant metabolite. Binds to nicotinic acetylcholine receptors at lower potency than nicotine. Has half-life of approximately 20 hours. Detectable in blood, urine, and saliva for several days after tobacco use
WHO reports tobacco use prevalence, focusing on cigarette smoking. Smoking is five times more common among men globally. Global smokers increased from 721 million to 967 million between 1980-2012. 80,000-100,000 children start smoking daily
Tobacco was used by indigenous peoples in Americas for 12,300 years. Native Americans used it for trade, ceremonies, and traditional medicine. Europeans discovered tobacco through Columbus's voyages in 1533