Amazon.com description: Product Description: Without preaching about the benefits or drawbacks of marijuana, This Is Cannibis provides straightforward facts about its 4,700 years of cultivation for fiber, food, and medicine; the current debate as to its therapeutic potential; the vast underground commercial success it enjoys; and the uneven laws surrounding its sale, possession, and use. While textbook-like in the breadth of information, the writing has the readable pace of good journalism and is supplemented with personal stories, pertinent statistics, black-and-white photos, a glossary, and a timeline.