Mezue ahịrịokwu na-esonụ:
Na United Nations Climate Change Conference na Paris (etiti Disemba 2015), Stern gosipụtara nchekwube, na-asị, "Ọ bụrụ na anyị emee nke a nke ọma, ọ ga-adị ike karịa mgbanwe mgbanwe ụlọ ọrụ mmepụta ihe. A na-agba ọsọ ndụ okike". O kwukwara