Health lawyer Alan Goldberg alerted me to these nanotech-related publications from EPA:EPA's Science Policy Council's Feb. 15 white paper (pdf);EPA fact sheetEPA's nanotech web pageIf you're coming to the nanotech party a little late, a good place to start would be the federal government's National Nanotechnology Initiative:The National Nanotechnology Initiative (NNI) is a federal R&D program