Leaders of the world's biggest economies are set to tackle climate change on Sunday, the final day of a weekend summit in Rome that is widely expected to set the tone for the crucial COP26 conference due to get underway later in Scotland.

The Group of 20 countries, which represent more than three-quarters of the world's greenhouse gas emissions, are looking for common ground on how to reduce emissions while helping poor countries deal with the impact of rising temperatures.

If the G20 summit ends with only weak commitments, momentum could be lost for the larger annual talks in Glasgow, where countries from around the globe will be represented including poor ones most vulnerable to rising seas, desertification and other effects.

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G20 leaders turn to climate change on last day of summit as focus shifts to COP26

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