There's a warning simply cutting emissions is no longer enough to tackle the climate crisis.
A United Nations report says substantial reductions in the use of fossil fuels are needed.
Experts believe global warming will hit 2-point-8 degrees Celsius by 2100, even with current commitments.
The report's the last of three and will be used in discussions at the annual COP climate summit.
UN secretary-general Antonio Guterres feels let down.
"It is a file of shame, cataloguing the empty pledges that put us firmly on track towards an unliveable world. We are on a fast track to climate disaster."