clues that rick doblin, just miles away in another part of boston, is also determined to find. e precise strain doblin and cecily believe could quiet and heal the brains of people with ptsd continues to grow. it is late fall and harvest is about to begin. >> he has his name on three plants. >> as they are about to learn, starting a revolution can be tough, even if they can get the medical marijuana. they still need to get dea approvals and a final study location because las vegas also said no. their journey is about to have some serious ups and downs, but all eyes are on an equally revolutionary study. could marijuana, the drug associated with short-term memory loss, save the minds of millions suffering with alzheimer's? i'm only in my 60's. i've got a nice long life ahead. big plans. so when i found out medicare doesn't pay all my medical expenses, i looked at my options. then i got a medicare supplement insurance plan. [ male announcer ] if you're eligible for medicare, you may know it only covers about 80% of your part b medical expenses. the rest is up to you. call now and f

rick doblin, self proclaimed hippie turned advocate, researcher and fundraiser began his mission. >> it became apparent to me that the only way back into legal use of mdma would be through the fda to medicalize mdma through scientific research. >> launching maps into a 30 year struggle with federal regulators, thats resulted in small, but privately funded mdma studies across the world. coming up on techknow. >> it's kind of an orangish color. so it's possibly either methamphetamine or amphetamine. >> "inside story" takes you beyond the headlines, beyond the quick cuts, beyond the soundbites. we're giving you a deeper dive into the stories that are making our world what it is. >> every monday night. >> i lived that character. >> go one on one with america's movers and shakers. >> we will be able to see change. >> gripping... inspiring... entertaining. no topic off limits. >> 'cause i'm like, "dad, there are hookers in this house". >> exclusive conversations you won't find anywhere else. >> these are very vivid, human stories. >> if you have an agenda with people, you sometimes don't s

rick doblin, self proclaimed hippie turned advocate researcher and fundraiser began his mission. >> it became apparent to me that the only way back into legal use of mdma would be through the fda to medicalize mdma through scientific research. >> launching maps into a 30 year struggle with federal regulators, thats resulted in small, but privately funded mdma studies across the world. coming up on techknow. >> it's kind of an orangish color. so it's possibly either methamphetamine or amphetamine. >> it's friday night in hollywood... the dance clubs along hollywood boulevard are starting to fill up with partiers. "molly" is part of the scene. a team of volunteers from a non profit called "dance safe" has hit the streets too. as members of the harm reduction movement, they are on a mission that they think is very important. >> so you use this term "harm reduction", what does that really mean? >> well, "harm reduction" is acknowledging the fact that despite zero-tolerance drug policies, people are still going to use drugs... so the end goal is to keep people safe, alive and really prevent