"Despite billions of dollars spent on nanotechnology research and development over the past decade, the human and environmental safety of nanomaterials remains unclear. As a result, a new nanomaterials safety research strategy is needed, and new governmental oversight is required to ensure the essential research is carried out, according to a report released [Wednesday] by the National Research Council (NRC)."

Robert F. Service reports for Science Magazine's Science Insider blog January, 25, 2012. [2]