Advanced Building programmes emerged to attempt creating fully ecological houses. By the mid-nineties, concerns with recycling spawned a new deconstruction industry promising major job-creation in addition to feedstocks for secondary materials industry. Meanwhile countercultural elements in building attempted to carry on the vision of the appropriate technologists of the sixties and seventies into the new millennium by experimenting with various forms of natural building like rammed earth and strawbales, along with a number of garbage-building techniques (e.g. Earthships built with old car tires). Today, the green building movement is an exciting place, with a range of construction styles, philosophies and subcultures; different mixes of environmental, health and economic concerns; and greater involvement on all sides with questions of materials production. It is making more connections with other movements of the builtenvironment like those for affordable housing and historic preservation. The relevance of historical building preservation to green buildings material concerns is particularly obvious. The preservation movement quietly took on mass movement status beginning in the late seventies, as great numbers of people reacted to urban renewal and suburban sprawl by becoming immersed in the rediscovery and defence of old buildings, buildings to be loved. Architectural historian Vincent Scully called it the only mass popular movement to affect critically the course of architecture in [the 20th] century. (Brand, 1994, p. 88). This love for old buildings and old materials has deeply ecological implications, a fact reflected on the cross-fertilization of the green building and preservation movements, expressed in works like Steward Brands How Buildings Learn.