Deadlocked climate talks run into extra time

Climate-change negotiations in Warsaw were extended into Saturday after rich and developing nations failed to agree on mechanisms to tackle global warming and its consequences.

Almost 200 nations were deadlocked over how to step up aid to ease the impact of climate change on developing nations.

Six leading environmental organisations had already abandoned the United Nations Climate Change Conference on Thursday, declaring that the ailing talks were "on track to deliver virtually nothing".

Exhausted negotiators and ministers shuttled to and fro in the early morning hours to try and lay some groundwork for an ambitious climate pact that is supposed to be signed in Paris by December 2015.