Tree-planting contributes to mitigating climate change impact, says UN chief

United Nations Secretary-General Antonio Guterres (front) speaks during a tree-planting ceremony on the occasion of the International Day of Forests at the UN headquarters in New York, March 21, 2018. United Nations Secretary-General Antonio Guterres said Wednesday that tree-planting contributes to mitigating climate change impact. (Xinhua/Li Muzi)