Medical marijuana has been used to treat epilepsy in patients for years, and this month, U.S. Surgeon General Jerome Adams said it should be studied and treated like other pain relief drugs. A growing body of scientific evidence is leading the U.S. Food and Drug Administration to do that. Meanwhile, researchers at Colorado State University are examining the benefits of cannabidiol, a non-psychoactive byproduct of marijuana, for treating dogs with epilepsy and arthritis. Faith Lapidus reports.