Cleargreen is a corporation that has a twofold purpose. First, it sponsors and organizes seminars and workshops on Carlos Castaneda's Tensegrity, and second, it is a publishing house.

Théun Mares, a South African author and teacher has provided confirmation of some of the teachings described by the late Carlos Castaneda. Théun's first two books, Return of the Warriors and Cry of the Eagle reveal many of the hidden meanings that readers of Castaneda have struggled for years to decipher.