Climate change litigation is a broad and still evolving term that refers to the rapidly growing body of lawsuits identified worldwide, in which climate change, its causes and impacts are either a contributing or key consideration in legal rationale and adjudication.1 Over 1,525 climate change-related cases have been identified by the Sabin Center for Climate Change Law at Columbia University and the Grantham Research Institute on Climate Change and the Environment at the London School of Economics and Political Science—1,213 in the US and 374 in at least 37 other countries and eight regional or international jurisdictions.2 In most of these cases, climate change is at the periphery of the argument and the filing and/or decision acknowledges the issue as relevant but not determinative