Links on space colonisation

Orbital Space Settlements: spreading life throughout the solar system

HEDS (NASA's Human Exploration and Development of Space Enterprise) Increase human knowledge of nature's processes using space environment Explore and settle the Solar System
Achieve routine space travel
Enrich life on Earth through people living and working in space.

Check out the OSS site at http://science.nas.nasa.gov/Services/Education/SpaceSettlement/
or, http://science.nas.nasa.gov/Services/Education/SpaceSettlement/75SummerStudy/,
for details of the conference NASA held to examine space colonisation.

Project Colony: Information and Updates regarding:
Lunar Bases, Space Colonies, Martian Colonies, & Asteroid Mining
http://www.myfreeoffice.com/projectcolony/

Catch Stephen Souter's links and editorial overview on space colonisation at the Last Frontier
http://www.edfac.usyd.edu.au/staff/souters/space/missions.html
links http://www.edfac.usyd.edu.au/staff/souters/space/exploring.html#ss

S.E.D.S. Students for Exploration & Development of Space: http://ftp.seds.org/

Pictures of Space Colonies: http://ftp.seds.org/pub/images/space_art/00Index. They have some viewable pictures of artists' conceptions of such colonies done in the 1970's.
These designs are a bit naiive as they don't account for day length, but they're pretty!
Navigation is a bit tricky, I couldn't find ways to view the files through the page itself.
Once you see a picture you're interested in click here http://ftp.seds.org/pub/images/space_art/ to go to the 'root' of that directory and see all the files listed in your browser window.

Computer Science - Carnegie Mellon University: http://www.cs.cmu.edu/

RailGuns can potentially hurl large amounts of resources out of a planet's atmosphere (or off the surface, if there's no atmosphere) so they can be grabbed by tugs in free space.
Check out a feasibility discussion at http://www.cs.cmu.edu/afs/cs.cmu.edu/user/mnr/st/excerpts