Recent assessments of the international community's ability to hold the increase of global average temperature to well below 2°C, while pursuing efforts to limit that increase to 1.5°C, indicate that this goal is unlikely to be achieved without large-scale implementation of climate engineering...

This introductory article frames the issues associated with operationalization of the precautionary principle in the context of environmental regimes at the international, national, and local level, with an emphasis on international regimes