On July 31, 2014, the National Nanotechnology Coordination Office (NNCO) will hold a public webinar to provide a forum to answer questions related to the federal government’s “Progress Review on the Coordinated Implementation of the National Nanotechnology Initiative 2011 Environmental, Health, and Safety Research Strategy.” According to the July 22, 2014, Federal Register notice, discussion will focus on the research activities undertaken by the National Nanotechnology Initiative (NNI) agencies to advance the current state of the science as highlighted in the Progress Review. Representative research activities as provided in the Progress Review will be discussed in the context of the 2011 NNI Environmental, Health, and Safety (EHS) Research Strategy’s six core research areas: nanomaterial measurement infrastructure; human exposure assessment; human health; the environment; risk assessment and risk management methods; and informatics and modeling. Questions on the Progress Review document may be submitted beginning July 24, 2014, through the close of the webinar. During the question-and-answer segment of the webinar, submitted questions will be considered in the order received.