Some Napa vintners want to add cannabis to their offerings, hoping to benefit from California's legalization of recreational marijuana. The industries are not dissimilar: cannabis and wine are both naturally-derived, highly-regulated intoxicants. But some in the Napa Valley are concerned that cultivating weed will compromise the county's reputation as a wine producer. We'll talk about the cannabis and wine industries, and whether the Napa Valley is big enough for both.