The Eiffel Tower is illuminated in blue and green to greet the "One Planet Summit" in Paris, France, on Dec. 12, 2017. Political leaders and representatives of key international organizations gathered at the "One Planet Summit" in Paris Tuesday to address the planet's "ecological emergency" and accelerate international climate actions. (Xinhua/Chen Yichen)

United Nations Secretary-General Antonio Guterres addresses the plenary meeting of the "One Planet Summit" in Paris, France, on Dec. 12, 2017. Political leaders and representatives of key international organizations gathered at the "One Planet Summit" in Paris Tuesday to address the planet's "ecological emergency" and accelerate international climate actions. (Xinhua/Chen Yichen)

President of the World Bank Jim Yong Kim (1st R, front) addresses the plenary meeting of the "One Planet Summit" in Paris, France on Dec. 12, 2017. Political leaders and representatives of key international organizations gathered at the "One Planet Summit" in Paris Tuesday to address the planet's "ecological emergency" and accelerate international climate actions. (Xinhua/Chen Yichen)

The Eiffel Tower is illuminated in blue and green to greet the "One Planet Summit" in Paris, France, on Dec. 12, 2017. Political leaders and representatives of key international organizations gathered at the "One Planet Summit" in Paris Tuesday to address the planet's "ecological emergency" and accelerate international climate actions. (Xinhua/Li Genxing)