Fred Hapgood, who occasionally comments here, has written several interesting pieces for CSO over the years. Fer instance:
On underground construction and security. Did you know the biggest tunnel boring machines have a rock-cutting surface as wide as 50′, and the leading-edge models can sense forthcoming changes in the ground conditions ahead of them? (Sidebar on the world’s largest underground excavations, for stat geeks.)
On the networking of printers, air conditioning units, forklifts and everything else. This was written in 04, so much of what was visionary then has already come to pass.
Fred’s also very knowledgable about transhumanism and singularities and other stuff – I once described him as a ‘renegade science nut’ which may not have impressed him but which amused me greatly. :) Fred, can you point people to current projects of interest on the Web?