I found this rather interesting. The entire documentary is about Ancient drugs and there use throughout history. What is said at the end, I hope, never happens to Kava like it has to so many other things in history. For now, most of us seem to know what Kava was used for and it's significance in those cultures. I know at least all of us here know that.
History Channel: Ancient Drugs (38:11)
History Channel: Ancient Drugs (38:11)