63% of youth are unaware that JUUL e cigarettes contain nicotine Study: Juul Pods Contain Caffeine. What's It Doing There, And What Does It Do? What's the deal with JUULing? CORA Services Why is vaping so popular? Devices are sleek and can be highly addictive. Vox What you may not have known about e cigarettes, following FDA's ban on Juul products The Hill Teens say they don't vape, they 'Juul.' That makes the activity hard to track Los Angeles Times