The focus is on innovation. Legal cannabis in the U.S. is expected to erupt into a $22 billion industry by 2020, according to the Marijuana Policy Project, a national advocacy group. Thirty states in the U.S. have legalized marijuana in some form, with nine states and the District of Columbia permitting adult recreational use. Interest in industrial hemp has taken off as CBD, a non-psychoactive molecule produced by the plant, increasingly is touted as a dietary supplement and cure-all for numerous ailments.