At their core, societal decisions about climate policy—whether emissions reductions, adaptation to climate changes, or the implementation of geoengineering—hinge on collective judgments about the extent to which adverse effects to human welfare and ecosystem services will result from changes...

Some scientists suggest that it might be possible to reflect a portion of incoming sunlight back into space to reduce climate change and its impacts. Others argue that such solar radiation management (SRM) geoengineering is inherently incompatible with democracy. In this article, we reject this...

The papers in this theme issue seek to advance our understanding of the roles of networks and partnerships in the multilevel governance of climate change and related issues in the urban context. In particular, the papers examine the roles of nontraditional actors and apply emerging theoretical...

While some jurisdictions are demonstrating leadership on climate change, it is clear that sufficient mitigation of climate change is not occurring. This highlights the importance of innovative approaches that bolster politically fraught international treaties and voluntary networks with...

Scientific momentum is increasing behind efforts to develop geoengineering options, but it is widely acknowledged that the challenges of geoengineering are as much political and social as they are technical. Legislators are looking for guidance on the governance of geoengineering research and...