Did you know your body is prepared with a widespread receptor system for the interaction with cannabis? Cannabis is regarded as one of the oldest cultivated plants of all. Based on archaeological findings and radiocarbon dating, an age of approximately 2500 years could be determined, and right now it is booming like never befor. For Mark Knowles, Author of the Series "All you need to know about DRUGS", it was time to take a step back and see what is behind products like cannabis oil and cannabis energy drinks.This book is an educational tool for people who are interested in scientific facts about cannabis and want to know more about a plant that has been used commercial, medical, ritual, and for religious practices of cultures throughout the ages.