The Guardian (UK) (00.html) has great Nanotechnology news, photos, videos and more
Nanoparticles lend their success to the extraordinary, and sometimes highly unusual, properties they have. For example, carbon nanotubes are incredibly strong, while pieces of graphite easily sheer apart. Nanoparticles of silver are significantly more toxic than lumps of the metal...
In May researchers at the Institute of Occupational Medicine, Edinburgh, asked the government to restrict use of carbon nanotubes - in car panels, tennis rackets and bike frames - claiming they posed a cancer risk similar to that of asbestos.