Countries meeting in Baku, Azerbaijan, for the Cop29 climate summit are under pressure to find ways to raise money to help poorer nations cut greenhouse gas emissions, shift to a low-carbon economy, and adapt to the impacts of extreme weather.
At least $1tn a year is needed. Developed countries are willing to ensure about half of that is provided from public sources, leaving a large gap that countries are hoping to fill with other sources of cash, known as innovative forms of finance.