This episode of Freakonomics Radio delves into the intricate landscape of the legal cannabis market in the United States. Despite strong public support for legalization and notable economic gains in states like Colorado, several challenges persist. These include varying state regulations, a lack of federal research on potential risks—particularly with concentrated forms of cannabis—and the ongoing classification of cannabis as a Schedule I drug at the federal level. The episode considers possible future developments, such as the rescheduling of cannabis to allow for more research, the idea of a government-run cannabis market, and the risk of large corporations overshadowing smaller, local producers. It emphasizes the importance of further research and thoughtful consideration of public health as legalization continues to evolve.