Figure shows the annual publication volume related to CO2 capture and sequestration. Overall publication numbers increased rapidly in the early 2000s, slowed down after mid-2010s, and experienced fast growth again during the past few years. The initial steady increase can be attributed to the urgency of reducing atmospheric CO2 levels triggered by global efforts. However, the absence of strong support in carbon capture and storage projects evident in small investment and economic incentives given to CCS process compared to other technologies may have been the cause of stabilizing publication numbers afterwards. Alternatively, we see an interdependency between oil prices and climate policies; cheap oil could make any carbon capture technology too expensive to sustain, which in turn would affect the storage of the captured CO2 due to a primary use for extracting oil along with CO2 storage, rather than CO2 storage alone, to offset the operating costs. It can also be seen from Figure that most of the documents are journal publications.