DH edited this paragraph
While there are some uncertainties surrounding nanotechnology, just as there would be with any emergent technology, the field is already being regulated. Various nanotechnologies are vastly different, and while we should remain vigilant of the possible dangers that these technologies pose, it is an umbrella term for many technologies that exist on a small scale, from 1 to 100 nanometres. Nanotech already has quite a substantial history, with the scanning tunnelling microscope in 1981, with fullerenes being discovered in 1985, and the discovery of carbon nanotubes in 1991, and various others that have continued to look promising. Nanotech structures could be used to make new light materials, microscopic circuits, scaffolding for bone growth, and developments in semiconductors, electronics, electric batteries, and composites, as well as liposomes for intelligent drug delivery systems.