Vaping has become common, but it's important to know what you're inhaling. Many e cigarettes contain nicotine, heavy metals like nickel and lead, and chemicals that can harm your lungs and overall health. The War Over Vaping's Health Risks Is Getting Dirty WIRED Can You Take Vape Juice On A Plane What You Should Know? Will Mexico's plan to constitutionally ban vapes play into the hands of cartels? Mexico The Guardian