UN climate talks were meant to end on Friday but nations are deeply divided over cash to help poor countries cope with the impacts of climate change.

The idea of phasing down the use of all fossil fuels to limit the rise in temperatures is also the subject of a deep rift as the COP27 talks wind up.

The Egyptian hosts are trying to broker an agreement among almost 200 countries after two weeks of negotiations.

But such is the scale of division the talks have overrun into the weekend.

You can follow blow-by-blow reporting on the negotiations by the BBC's team on the ground in Sharm el-Sheikh here.

But here's a breakdown of the major areas of disagreement.

1 - "Loss and damage"

The biggest sticking point by far here is the need for a new fund to help countries deal with the immediate impacts of climate change.

The issue is known as "loss and damage" in the framework of UN talks. Rich countries have resisted this discussion for 30 years, fearing that since they played a major role in causing climate change, they will have to pay for it for centuries to come.

2 - Phasing out all fossil fuels

The final discussions at COP26 in Glasgow last year almost fell apart on the issue of coal.

Richer countries wanted to phase out the use of the most polluting fossil fuel.

Larger developing economies including India and China did not.

Cue frantic huddles on the plenary floor as diplomats tried to find a compromise.

They settled on "phasing down" rather than "phasing out".

Here, India and a number of other countries wanted to expand this phrase to include oil and gas.

However, the draft document published on Thursday did nothing more than restate the Glasgow formula.

Read more

https://www.bbc.com/news/science-environment-63666086