United Press International: Trees absorb nearly one-fifth of humanity’s climate-change emissions, a 40-year British university study finds. The University of Leeds study is being hailed by environmentalists as the most compelling evidence yet supporting an end to the logging or burning of trees in forested areas. Previous studies on the value of the rainforests had concentrated on South America and Asia. But the Leeds research included tropical forests in Africa and found trees absorb 4.8 billion tons of …