Fig. 5: Most studies focus on investigating the CDR option from a technical perspective, where the technology or ecosystem management method itself is investigated.
a The number of studies which report on each of the CDR options. One study can report on multiple CDR options. b For each CDR option the share of research fields the studies were published in. This is based on meta-data from the Web of Science and follows the OECD Category scheme41. c For each CDR option the share of scientific method used in the studies as identified by our classifier. One study can use multiple methods, see Supplementary Table 3. Source data is provided as a Source Data file.
