Cigarettes kill more than 5.4 million people each year, a 30 percent increase over the past two decades. Although cigarette use has generally fallen in the U.S., increased use in Asia and Eastern Europe has ensured that the tobacco industry is bigger than ever. Innovation has also hit the cigarette business in the form of e-cigarettes, electronic devices that heat up liquid nicotine to a vapor that is then inhaled.

Like everything related to tobacco, e-cigarettes have been controversial since Continue reading →