Today's green building movement traces back its roots (in part) to the improvised shelters built by back-to-the-land hippies in the 1970s
Images: _place_holder;
[](http://www.greenbuildingadvisor.com/blogs/dept/musings/nostalgia-hippie-building-heyday)
[](http://www.greenbuildingadvisor.com/blogs/dept/musings/nostalgia-hippie-building-heyday)
[](http://www.greenbuildingadvisor.com/blogs/dept/musings/nostalgia-hippie-building-heyday)
[](http://www.greenbuildingadvisor.com/blogs/dept/musings/nostalgia-hippie-building-heyday)
[](http://www.greenbuildingadvisor.com/blogs/dept/musings/nostalgia-hippie-building-heyday)
[](http://www.greenbuildingadvisor.com/blogs/dept/musings/nostalgia-hippie-building-heyday)
[](http://www.greenbuildingadvisor.com/blogs/dept/musings/nostalgia-hippie-building-heyday)
[](http://www.greenbuildingadvisor.com/blogs/dept/musings/nostalgia-hippie-building-heyday)
[](http://www.greenbuildingadvisor.com/blogs/dept/musings/nostalgia-hippie-building-heyday)
[](http://www.greenbuildingadvisor.com/blogs/dept/musings/nostalgia-hippie-building-heyday)
[](http://www.greenbuildingadvisor.com/blogs/dept/musings/nostalgia-hippie-building-heyday)
A discredited theory of embryonic development held that "ontogeny recapitulates phylogeny" — in other words, that the the developmental stages of an embryo (its ontogeny) mimic the stages of evolutionary development experienced by the species (its phylogeny). One piece of evidence supporting the theory: in early stages of development, a human embryo has a tail.
URL: http://www.greenbuildingadvisor.com/blogs/dept/musings/nostalgia-hippie-building-heyday
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