image credit: V. Shanov & M. Schulz; image source; larger image
Spinning Carbon Nanotubes
The photo shows a bundle of nanotubes grown by University of Cincinnati engineers. To see how these nanotubes are spun into thread, and used as a cell phone antenna, see the second video in Spinning Carbon Nanotubes. For more on how the nanotubes were grown, see this National Science Foundation press release.
A Nanotube Space Elevator
Check out A Nanotube Space Elevator for a video, narrated by Neil deGrasse Tyson, describing how nanotubes might be used to construct a tether for a space elevator. To see an artist's conception, but without the tether, visit NASA's Space Elevator.