Wednesday marks "National Kick Butts Day" which is a push to end teen smoking, but new numbers show fewer and fewer teens smoking cigarettes while a growing number are vaping.
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The surgeon general and others are warning of the dangers of e-cigarettes, but a lot of research on long-term effects are still being done.
The National Institute of Drug Abuse says that nearly one in three 12th graders have used an e-cigarette in the past year, and students say vaping is becoming very popular.
