So those cancer-causing nanotubes that people are raving about (wait, are they?) might be combined with the vast supply of dust and debris on the moon to make a new kind of concrete for structures on the moon.  It seems like a workable idea, though, and the cost of structures would be very minimal.  NASA’s idea is to build telescopes, satellite arrays, and other equipment on the moon and utilize this new “concrete” for those purposes.  Considering all the material is readily available, it doesn’t really take much to conceive of a science station up there.  Or a moon colony – oh, now that’s exciting.