Lynn Zimmer, Ph.D., and John P morgan, M.D., have written a book that tells the truth about marijuana. Scientifically sound and carefully documented, it seperates the facts from the myths with a critical examination of more than a century's worth of research on marijuana's effects on human health and behaviour. This book is essential reading for parents, teachers, policy-makers, and anyone who believes that our response to marijuana should be based on facts, not fear.