The world's highest court Wednesday declared that states have a legal obligation to tackle climate change and that failing to do so was a "wrongful act" that could open the door to reparations."The legal consequences resulting from the commission of an internationally wrongful act may

The U.N.'s top court was due to set out a non-binding legal opinion on the extent of legal and financial responsibility countries have for climate change.

In the historic decision of the International Court of Justice has ruled that countries can sue one another over climate change impacts. It also includes historic greenhouse gas