Summary/Abstract
This chapter, from the book Managing Global Warming (2019), gives a brief overview of the emergence of the idea of negative emissions technologies and solar radiation management technologies in climate change policy and the normative issues—questions of values—that they might raise. Normative issues fall into four broad categories: (1) distributive justice, (2) procedural justice, (3) ethical issues, and (4) rectificatory justice. Setting aside rectificatory justice, the chapter offers some reflections on an issue of distributive justice (moral hazard), ethics (hubris) and procedural justice (fair participation). It goes onto endorse a suggestion by Rayner et al. that the governance of research into geoengineering technologies should proceed at first by the development of technology-specific research protocols informed by core societal values.