In a surprising reversal of roles, nanotechnology scientists outrival the general public in seeing a cause for concern in some aspects of their work, according to a study published Sunday.
Nanotechnology — the science of making things measured in units 10,000 times smaller than the width of a human hair — holds spectacular promise in virtually every sector.
Hundreds of consumer products already contain nano materials, most of which are cosmetics, sunscreens and cleaning products with microscopic particles.