The United States National Nanotechnology Initiative (NNI) this week released four reports that resulted from a series of workshops focusing on various issues in the nanotechnology environmental, health and safety (EHS) arena. The workshop series was part of an ongoing strategy to coordinate nanotechnology-related EHS research by convening experts from industry, academia and the government to share information, discuss the newest developments, and identify research gaps. According to Dr. Sally Tinkle, Acting Director and EHS Coordinator for the National Nanotechnology Coordination Office, “These four reports detail the process by which we examined the 2008 EHS Research Strategy and the information and data in the EHS and ELSI [ethical, legal, and social issues] arenas to consider the best path forward for nanotechnology. The nanoEHS workshops, along with advice from the National Academies and the President’s Council of Advisors on Science and Technology (PCAST), culminated in the development of an updated EHS Research Strategy for the NNI, which will guide the responsible development of nanotechnology.” The following areas were examined in the workshops: Nanomaterials and Human Health & Instrumentation, Metrology, and Analytics; Nanomaterials and the Environment & Instrumentation, Metrology, and Analytics; Human and Environmental Exposure Assessment; and, Risk Management Methods & Ethical, Legal, and Societal Implications of Nanotechnology.