Donald L CoanDonald Coan has been doing hydroponics as a hobby for over 40 years. He studied psychology at Clark University and received his PhD in Psychology and Education from the University of Michigan. Coan has held teaching and administrative positions in coleges and universities in Indiana, Pennsylvania, and California. He believes hydroponics is a technology that can meet the food needs of the Earth's growing population, restore our endangered natural environment, and build a more peaceful, prosperous, and resourceful planet for future generations. He currently lives with his wife and dog in San Clemente, CA. Read More Read Less