Happy 4-20, International day of cannabis celebration In this show Dr. Kelly welcomes back Paul Armentano, the deputy director of NORML, to talk about the significance of the 420 holiday, new research into cannabis efficacy, the inevitable course towards legalization, and how the political contests in various states are shaping up. Find out the best candidates to vote for in your state, and learn about new research on epilepsy, diabetes and safe driving while using cannabis.