World leaders have agreed a deal that aims to halt and reverse global deforestation over the next decade as part of a multibillion-dollar package to tackle human-caused greenhouse gas emissions. Xi Jinping, Jair Bolsonaro and Joe Biden are among the leaders who will commit to the declaration at the Cop26 climate summit in Glasgow on Tuesday to protect vast areas, ranging from the eastern Siberian taiga to the Congo basin, home to the world’s second-largest rainforest