Current projects include the design and evaluation of leak detection at geologic CO2 sequestration sites and shale gas extraction wells; the value of scientific information for conflict resolution among stakeholders with different values and beliefs; and the development of decision support tools for water, energy and ecosystem management. He has published over 200 manuscripts in peer reviewed journals (160), books and conference proceedings. Small has served as a member of the US EPA Science Advisory Board (SAB) and has been a member of a number of US National Research Council (NRC) committees, most recently as chair of the NRC Committee on Risk Management and Governance Issues in Shale Gas Extraction. He is a Fellow of the Society for Risk Analysis and served as an associate editor for the journal Environmental Science & Technology (1995 – 2011), where he helped to initiate the policy analysis section of the journal.