The UN's top court on Wednesday ruled climate change an "existential problem of planetary proportions" and said countries had a legal duty to act or face consequences.

The United Nations’ top court has issued a landmark advisory opinion on climate change. The International Court of Justice’s 15 judges considered for the first time what the court’s president calls “a

One of the world’s most vulnerable countries to the fallout from climate change has won a landmark legal battle, giving countries new ammunition to pursue some of the planet’s biggest emitters.