Global warming tops crucial 1.5°C milestone ahead of crucial COP29 climate summit
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The COP29 climate summit is due to get underway on Monday in Baku, Azerbaijan - a country whose economy is largely based on selling fossil fuels. Over 12 days, world leaders and thousands of delegates will try to negotiate ways to cut greenhouse gas emissions, amid warnings that efforts to limit global warming are way off track. Henry Ridgwell reports.