A landmark climate change case begins at the world court. In its largest case in history, the International Court of Justice heard testimony from officials of several small island nations on how climate change is endangering their survival.

On December 2, the International Court of Justice began hearing oral statements on the Advisory Opinion relating to the Obligations of States in respect of Climate Change

The International Court of Justice, the United Nations’ highest judicial body, is beginning landmark hearings on global warming. Here’s a guide.