Source:
news.bbc.co.uk...
"Tighter UK and European regulation over some aspects of nanotechnology -manipulation of molecules - is needed to ensure its long-term safety. "
I am surprised this issue hasn't been recognised sooner, at least publicly.
I realise this technoloy is relatively new, so I think the control of tiny particles should be monitored very carefully. The chances of inhailing
these substances could be potentially dangerous as we have found with many man made substances.