CNN's award-winning chief medical correspondent Dr. Sanjay Gupta, a chief neurosurgeon, puts medical marijuana under the microscope. All three (3) of CNN's current "Weed" documentaries compiled into one video. See links below to skip over to those segments of the video. WEED: A CNN Special Report by Dr. Sanjay Gupta (2013) WEED 2: Cannabis Madness – A CNN Special Report by Dr. Sanjay Gupta (2014) youtu.be/PRLYV0_6zY8?t=43m30s WEED 3: The Marijuana Revolution – CNN Special Report by Dr. Sanjay Gupta (2015) youtu.be/PRLYV0_6zY8?t=1h26m52s Other Sources Dr. Sanjay Gupta en.wikipedia.org/wiki/Sanjay_Gupta Why I Changed My Mind on Weed www.cnn.com/2013/08/08/health/gupta-changed-mind-marijuana/ Medical Marijuana And 'The Entourage Effect' www.cnn.com/2014/03/11/health/gupta-marijuana-entourage/index.html Dr. Sanjay Gupta: It's Time for a Medical Marijuana Revolution www.cnn.com/2015/04/16/opinions/medical-marijuana-revolution-sanjay-gupta/ Marijuana: Is the Party Over? www.cnn.com/2017/01/20/opinions/marijuana-is-the-party-over-callan-cevallos/