It looks like a flash drive, is easy to conceal, and doesn’t leave a smoke trail or smell. Across the country, the use of these e-cigarettes like the popular Juul brand, is spiking among youth, but parents often aren’t even sure what they are and many teens mistakenly believe there are no serious health risks. °ÄÃÅÅܹ·ÂÛ̳ Correspondent Kavitha Cardoza talked to teachers, principals, researchers, parents, and students on the trend in this PBS NewsHour segment. (July 18, 2018)