In this Nov. 27, 2019, photo, a solar panel installation is seen in Ruicheng County in central China's Shanxi Province. As world leaders gather in Madrid to discuss how to slow the warming of the planet, a spotlight is falling on China, the top emitter of greenhouse gases. China burns about half the coal used globally each year. Yet it's also the leading market for solar panels, wind turbines and electric vehicles. (AP Photo/Sam McNeil)
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