| http://www.w3.org/ns/prov#value | - Nano Risk Assessment According to Kathy Jo Wetter of the ETC Group, ???There is a virtual consensus among scientists that the toxicology of engineered nano-materials is largely unknown, and that toxicity data cannot be extrapolated from existing toxicology studies conducted on larger-scale materials. ???In short, we don???t know what accumulated amounts of any human-made nano-material will do in o
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