Do You Like Big Butts? How Bout Trillions Of Them?

"Scientists have discovered new evidence to make smokers feel even guiltier about their foul habit. Not only are the tobacco and chemicals in cigarettes carcinogenic. It turns out that their filters are so toxic that discarded butts have become a major threat to the planet's health, according to San Diego State University Public Health Professor Thomas Novotny and researcher Elli Slaughter. " ...