What to consider when dealing with plumbing in a new bathroom. Learn how to add a bathroom to your home, including plumbing and drainage tips with this free home improvement video. Expert: Dave Pollack. Bio: Dave Pollack owns Dave's Handyman service in Cottonwood, Arizona.
Like TLomon mentioned the tobacco industry is part of a well known conspiracy of the past. The tobacco industry was behind a PR campaign that counteracted scientific evidence which linked cigarette smoking to lung cancer.
The incidence of lung cancer is strongly correlated with cigarette smoking, with about 90% of lung cancers arising as a result of tobacco use. The risk of lung cancer increases with the number of cigarettes smoked over time; doctors refer to this risk in terms of pack-years of smoking history (the number of packs of cigarettes smoked per day multiplied by the number of years smoked).