David is interviewed as an Herbal Elder by Everything Herbal

It doesn’t get much better than David and his Center for Herbal Studies. If you want a deep understanding of botanical medicines and plants, and you want it from a comprehensively scientific as well as from an ethnobotanical and spiritual perspective, there is no other person that can give that to you in the same way that David can. If you want the best education and resources that herbal medicine has to offer, you have come to the right place.