Elizabeth Maruma Mrema, executive secretary of the Convention on Biological Diversity, delivers a speech during the opening ceremony of the 15th meeting of the Conference of the Parties to the UN Convention on Biological Diversity (COP15) in Kunming, southwest China's Yunnan Province, Oct. 11, 2021. COP15 kicked off in Kunming on Monday. [Photo by Chen Yehua/Xinhua]