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.
Cancer causing substances like nicotine in cigarette smoke are known as carcinogens. Carcinogens generally brings about transformation of a cell to cancer by altering the genetic material inside the nucleus (known as DNA) of the cell. This change in the genetic material causes what is called a mutation.