Vaping is everywhere. Can we really ban it?

Australia's efforts to combat smoking have been revered around the world, but now we’re breeding a new generation of nicotine addicts.  Vaping has taken off, and the government's now trying to catch up with a ban on the recreational use of e-cigarettes.  But will it work, or just push sales further into the black market?  Today, a leading researcher in the field on the vaping epidemic.  Featured:  Dr Emily Banks, professor of epidemiology and public health, Australian National University, Canberra