Earth 2100 is a television program that was presented by the American Broadcasting Company (ABC) network on June 2, 2009 and was aired on the History channel in January 2010 and was shown through 2010. Hosted by ABC journalist Bob Woodruff, the two-hour special explored what "a worst-case" future might look like if humans do not take action on current or impending problems that could threaten civilization. The problems addressed in the program include current climate change, overpopulation, and misuse of energy resources.