Fig. 5. Greater Support for Climate Intervention Technologies in Global South versus Global North Countries (1-5 scale: 1 = Strictly reject; 3 = Neither support nor reject; 5 = Fully support; bolded font indicates significant difference (p < 0.05) between Global South and Global North; color scheme shifts from redder to greener as support for technology increases).

N = 30,284 participants. Statistically significant differences (p < 0.05) of level of technology support between Global North and Global South cohorts, according to nonparametric independent-samples (two-tailed) Mann-Whitney U testing. We identified significantly greater support in the Global South for nine of the ten technologies: stratospheric aerosol injection, U = 9.00, Z = −4.110, p = 0.000; marine cloud brightening, U = 4.00, Z = −4.325, p = 0.000; space-based geoengineering, U = 8.00, Z = −4.153, p = 0.000; soil carbon sequestration, U = 37.00, Z = −2.905, p = 0.003; marine biomass and blue carbon, U = 39.00, Z = −2.819, p = 0.004; DACCS, U = 7.00, Z = −4.196, p = 0.000; BECCS, U = 9.00, Z = −4.110, p = 0.000; enhanced weathering, U = 15.00, Z = −3.852, p = 0.000; biochar, U = 13.00, Z = −3.938, p = 0.000. The one exception is afforestation and reforestation, U = 88.00, Z = −0.710, p = 0.497. Means (rather than mean ranks, on which tests are based) reported. Support refers to overall support for activities vis-a-vis research, small-scale field trials, broad deployment. Cells colored according to following scheme: if support for technology is between 3.00–3.40, we applied pale orange; from 3.41–3.80, pale yellow; from 3.81–4.20, pale green; above 4.20, a darker green.