Last Friday, EPA’s Office of Research and Development announced in the Federal Register a 45 day comment period for its new draft case study on the use of nanoscale TiO2 in water and sunscreens: "Nanomaterial Case Studies: Nanoscale Titanium Dioxide in Water Treatment and in Topical Sunscreen" FR 74,146 at 38188 (July 31, 2009).  The report … Continue Reading