NPR: "Marijuana's Black Market: Will It Stay Or Will It Go?" (with audio)

NPR, with audio (04:14):

In the last nine months, about 65,000 people signed up for Colorado's medical marijuana registry. And many have started shopping at the state's growing number of dispensaries.

The booming industry is creating headaches for state regulators, law enforcement and for one other group — Colorado's drug dealers. FULL TRANSCRIPT...