22nd century tobacco Launching the First Reduced Nicotine Cigarette Authorized by the FDA That Helps You Smoke Less From hype to bust –

We still need more research. Although the 10-member, multidisciplinary Advisory Committee to the Surgeon General, selected from a list of more than 150 public health and medical authorities generated by the Public Health Service and approved by the tobacco industry, would base its conclusions on a review of 7,000 published studies on smoking, the industry dismissed the findings as statistical and lacking clinical proof

Its not just nicotine that teens are vaping, though

"Younger Orientals are more overt in flavor

Paris is cooler, depicted in dark blue hues with sudden bursts of life in red, green, and pink neons which stand out among the otherwise bleak surroundings, while the well-lit frozen-over metropolis of Helsinki is almost colorless in bluish grays

Nicotinic acetylcholine receptor availability in cigarette smokers: effect of heavy caffeine or marijuana use