ABSTRACT
We do not need to look far to find examples of how past approaches to substance management were inadequate. Perfluorinated organic compounds, lead, PCBs, and asbestos are examples of substances that have an environmental legacy that proved costly. Engineers and materials scientists found they possessed unique and brilliant properties, and identified more and
CONTENTS
3.1 Opportunity Costs .......................................................................................50 3.2 Risk Assessment for Nanotechnology Is Urgently Needed .................. 51
3.2.1 The Pace of Nanotechnology Development and the Paucity of Information .................................................................... 51
3.2.2 Potential for Wide Dispersion in the Environment Amid Uncertainty ....................................................................................... 52
3.2.3 Few Standards or Guidelines ......................................................... 52 3.3 Environmental Risk Issues .........................................................................53
