In The Hockey Stick and the Climate Wars, Michael E. Mann offers a personal assessment of the controversies and shenanigans that have surrounded the issue of global warming during the past decade and a half. The "hockey stick" refers to a famous graph, produced by the author and others in 1998 and refined in 1999, that shows the average global temperature during the past 1,000 years spiking upward in the late 20th century, exceeding the levels reached during the Medieval Warm Period.
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机译：在《曲棍球与气候大战》中，迈克尔·E·曼（Michael E. Mann）对过去十五年来围绕全球变暖问题的争议和恶作剧作了个人评估。 “曲棍球杆”是指著名的图形，由作者和其他人于1998年制作，并于1999年进行了改进，该图形显示了过去1000年中的全球平均温度在20世纪后期急剧上升，超过了中世纪时期的水平。暖期。
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