Every year, world leaders gather for the United Nations climate change conference, and after a year of record temperatures, this year’s summit has been called the most vital yet. As Cop28 begins in Dubai, Ian Sample hears from Fiona Harvey, the Guardian’s environment editor and resident Cop expert. She explains why this summit proved controversial before it even began, what the main talking points will be, and how countries can still work together to achieve the goals set out in the 2015 Paris Agreement.
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