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The highly anticipated COP26 climate change summit begins in the Scottish city of Glasgow on Sunday.
Delegates from about 200 countries will be there to announce how they will cut emissions by 2030 and help the planet.
Day one will see a report on the state of the climate released by the World Meteorological Organization (WMO).
With the world warming because of fossil fuel emissions caused by humans, scientists warn that urgent action is needed to avoid a climate catastrophe.
