Center for Resourceful Building Technology
Discover demonstration homes that exhibit green construction practices, order publications, or review the firm's educational services. http://www.crbt.org/
Earth Building Foundation
Find a schedule of workshops and seminars on earthen building. Also access a short FAQ and read about the foundation's goals. http://www.earthbuilding.com/
Earth House
Those interested in alternative living can check out underground housing or coverings of earth, rock, clay and cement for existing homes. http://www.earth-house.com/
Earthship
Discover houses built with recycled materials and resource-efficient energy and water systems. Also visit the discussion board, or read articles. http://www.earthship.org/
