David Robert Loy is vice-president of the Rocky Mountain Ecodharma Retreat Center. He is a professor, writer, and teacher in the Sanbo tradition of Japanese Zen Buddhism. A student of Yamada Koun and Robert Aitken, he was authorized to teach in 1988 and leads retreats and workshops nationally and internationally. He is author of EcoDharma: Buddhist Teachings for the Ecological Crisis andA New Buddhist Path: Enlightenment, Evolution, and Ethics in the Modern World, and he is co-editor of A Buddhist Response to the Climate Emergency. His website is davidloy.org.

Guhyapati is the founder of the ecodharma centre in the Catalan Pyrenees, which combines a retreat and education centre with post-capitalist community living. Thirty years of Dharma practice and social activism, together with an astute sense of group dynamics, inform his facilitation of participatory and holistic learning. He was ordained in the Triratna Buddhist Order in 1994. He has given much of his time to the development of trainings focused on engaged Buddhism and sustainable activism. He has spent the last few years translating and channelling learning from Ecodharma into a social movement capacity building programme at the Ulex Project. His love of the mountains finds expression in guiding wilderness immersion retreats and teaching radical ecology.