Editorial on the Research Topic Solar geoengineering in the horizon: humanitarian dimensions Should humanitarians, with hearts so pure, Turn to solar geoengineering, a remedy unsure?A risky path, a choice profound, As nature's forces loom around. A moral dilemma, fraught with strife, In a world beset by climate's knife.-ChatGPT, 2023Climate change is already making humanitarian work harder, less predictable, and more complex (IFRC., 2018;Baxter et al., 2022). There is a duplicity between the growing humanitarian impact on the world's most vulnerable, and the leisurely pace and ambition of mitigation and adaptation committed to date (United Nations Environment Programme., 2022). In this context, conversations about what role, if any, solar geoengineering might play in either ameliorating or exacerbating climate impacts of the world's most vulnerable have come to the fore. For example, the US National Academies of Science, Engineering and Medicine recently called for $200 M in federal funding for research, including on the social and ethical dimensions (National Academies of Sciences Engineering Medicine., 2021). Yet the debate is fraught with competing justice narratives. On the one hand, staunch opponents are calling for a non-use agreement (Biermann et al., 2022), which would, for example, ban all outdoor experimentation and public funding, and even shut down technological assessment within the Intergovernmental Panel on Climate Change (Biermann et al., 2022, p. 5). On the other hand, some supportive of research frame solar geoengineering as an "obligation to the global poor" due to its potential to possibly ameliorate the worst climate impacts while we continue to mitigate and adapt (Horton and Keith, 2016). The discussion was further complicated by a rogue private actor, Make Sunsets, which conducted small-scale outdoor Solar geoengineering is an emerging technology, which could ameliorate some climate impacts by scattering approximately % of incoming sunlight away from the Earth to lower global temperatures.