Damning all nanomaterials would be damned silly

Author Philip Ball criticizes the Canadian environmental group, the ETC Group, for holding a competition to design a warning symbol, similar to symbols used to warn of biological or radiation hazards that would be used to identify the presence of nanomaterials in a product. While there is significant reason to push for better regulation and toxicology testing of nanomaterials, Ball warns that labeling all nanoparticles as potentially hazardous is neither useful more sensible.