Climate Ambition Summit: What is it and what will it achieve?

Countries across the world are due to discuss plans to limit climate change at a summit this weekend Picture: Peter Byrne/PA

Countries are coming together this weekend to ramp up plans to cut their carbon emissions, following recent revelations that the world is still on course for a catastrophic 3C of global warming.

Five years after the Paris Agreement, a virtual summit co-hosted by the UK, France and the United Nations will see decision-makers outline new efforts to try to limit warming to between 1.5C and 2C.