Since 2001, 34 national science academies, three regional academies, and both the international InterAcademy Council and International Council of Academies of Engineering and Technological Sciences have made formal declarations confirming human induced global warming and urging nations to reduce emissions of greenhouse gases.
自2001年以来，34个国家的国家科学院，3个区域性的科学院，以及国际科学院组织（英语：InterAcademy Council）和国际工程与技术科学院理事会（英语：International Council of Academies of Engineering and Technological Sciences）都已经发表了正式声明支持人类活动引起全球变暖的观点，并敦促世界各国减少温室气体的排放。