The report provides a synthesis of global trends in climate change litigation (or simply ‘climate litigation’), a growing global phenomenon. It updates on known case numbers, metrics and categorisations, and considers some of the most relevant trends in the arguments and strategies employed by litigants.

Climate change litigation has been growing in importance over the past three decades as a way of either advancing or delaying effective action on climate change. This report reviews key developments around the world in climate litigation over the period May 2019 to May 2020, in the latest in annual series.

Climate action lawsuits against governments and corporations have spread across 28 countries, according to a new analysis. The study reveals that more than 1,300 legal actions concerning climate change have been brought since 1990.