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A reseacher in Vancouver, WA, who also lived in Norway ( and Sweden and Alaska), is doing interesting stuff on underground habitats for future generations. See her blog here, and comment. Her name is Annika Lundqvist.
http://habitatunderground.blogspot.com
She writes:
"I am fascinated by your Polar City concept -- http://pcillu101.blogspot.com -- I just saw it last week online through one of the blogs featuring it. I am possibly even more fascinated that it is being slated to happen in Longyearbyen, Norway but the prospect of the concept happening in Alaska, Canada, Russia and elsewhere is exciting.
I heard about this through a blog and I joined the blog-osphere recently myself. I was quite inspired that some people (you and several others) are projecting such concepts to occur within the next decade. I've been a fan of "experimental" living concepts for awhile, but it is by far underground spatial concepts that dominate my interest.
http://habitatunderground.blogspot.com
More to come there, I just started the blog.
The beginnings of what I write there pretty much outline my interest. As a graduate student about 7 years ago I did research on Underground Space and human use of it ( history of using it, psychological and design factors and more). I maintain serious interest in the issue, particularly projects that call for occupancy beyond what we typically see with most underground installations.
.....I also agree that the time to start discussing these models is now. Part of my own personal work is just uncovering the studies, architectural concepts and dialogue that has been going on with this in the past century, as well as connecting with individuals who work with these issues.