Ed Rosenthal is The Guru of Ganja. Recognized worldwide as the leading authority on marijuana. He has been a leading researcher, best-selling author, and social activist for more than 35 years. Currently, Ed continues to research and improve marijuana gardening techniques and teaches courses on horticulture at Oaksterdam University, America’s first cannabis college.After almost three decades, his Ask EdTM advice column continues to answer questions on all matters of marijuana from readers around the world. His best-selling titles include; Big Book of Buds, Medical Marijuana Handbook, Marijuana Garden Saver, Best of Ask Ed, and Marijuana Grower’s Handbook. Ed Rosenthal lives in Oakland, CA.