David’s background includes forty years of scientific work, including astronomy at the University of Arizona and optics at Xerox Palo Alto Research Center. Currently, he teaches about the yugas, ancient world cultures, astronomy, and physics at the Ananda College of Living Wisdom. He has been writing and lecturing on the topic of the yugas for more than a decade. David is a teacher at the Ananda College of Living Wisdom and was instrumental in developing a curiculum based on key aspects of the yuga cycle. He lives with his wife at Ananda Village, a spiritual community in Northern California.