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Earth 2100 is a television program and a science fiction documentary film that was presented by ABC on June 2, 2009, aired on the History Channel in January 2010, and was shown throughout the year. The two-hour special, which Bob Woodruff hosted, looked at what "a worst-case" future might entail if people do nothing about current or impending issues that could endanger civilization. The problems addressed in the program include current climate change, overpopulation, and misuse of energy resources.