UN concludes environmental assembly with pledges to end pollution

Photo taken on Dec. 6, 2017 shows the closing plenary of the third session of the United Nations Environmental Assembly (UNEA) in Nairobi, Kenya. The third session of the United Nations Environmental Assembly (UNEA) ended in Nairobi on Wednesday with leaders pledging to end pollution for a clean environment. (Xinhua/Lyu Shuai)