Cannabis is becoming increasingly tolerated, both culturally and legally, across the United States and other parts of the world. Yet, there are at least 100 different psychoactive cannabinoids in any strain of cannabis. What do we know about these cannabinoids? Dr. Hollis Karoly talks about the two most common cannabinoids, THC and CBD, and what the scientific evidence suggests about their harms and benefits. She then discusses the connection between cannabinoids and alcohol use. Dr. Hollis Karoly is an Assistant Professor in the Department of Psychology at Colorado State University.