In April 2005, representatives of the Plains CO2 Reduction (PCOR) Partnership, led by the Energy & Environmental Research Center (EERC) at the University of North Dakota, held two focus groups in Williston, North Dakota. A total of sixteen people participated; seven on April 20 and nine on April 21. The purpose of the focus group research was to gain insight into the public perception of carbon sequestration from two groups representative of citizens in the north-central Williston basin, an area with potential for both geological and terrestrial sequestration projects. Focus group participants were shown a 30-minute informational video developed by the PCOR Partnership and entitled ?Nature in the Balance ? CO2 Sequestration,? introducing participants to the greenhouse effect, anthropogenic CO2 emissions, and terrestrial and geologic sequestration. These concepts were discussed in the context of activities in the PCOR Partnership region. Prior to the focus group sessions, participants provided demographic and attitudinal information. Audio and video recordings were made of the sessions.