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Nanomaterials seems to have suddenly appeared as the latest "nasty" although there seems to be lot of poor and misleading reporting of the issues.   Nanomaterials are simply materials with very small particles and are widely used in many products including sunscreen, cosmetics, paints, etc. Nanosilver is a biocide and has been used in washing machines, air con and vacuum cleaners. In the amounts used, it apparently poses no risk to people although there are concerns that if it were to be ...