Under Federal law, marijuana is still an illegal substance, yet 23 states and Washington DC have legalized medical marijuana, and four states have decriminalized marijuana for recreational use. With this shift in policy and many other states expected to follow suit, we will need to consider ways to address the growing impact and consequences of legalization. Dr. Rosalie Pacula, Director of the Bing Center for Health Economics at the RAND Corporation, will examine in this video the variance