Nano Particles Without Macroproblems

Little by little, nanotechnology has crept up on us. From a mostly academic exercise 20 years ago, it has swiftly progressed to the point where the technology is just about everywhere. However, research into possible environmental and health implications of solvents and other chemicals, including arsine and trichloroethylene, wasn't done at the birth of the industry, before such toxic substances were widespread in the environment. If it had been, we might not be stuck with polluted sites left by manufacturing plants.