Al Gore Jr. - Son of Al Gore, US Senator from Tennessee from 1953 to 1971, is a noted author and environmental activist. He briefly considered majoring in government while a student at Harvard, but instead stuck with his plan to major in English and write novels. Since his college years, he had been interested in environmental issues, particularly global warming, and this often showed up as a theme in his works. Given his views and his father's political career, Gore was considered as a presidential candidate for the Green Party, a centrist party that mainly focused on environmental issues, in both 1996 and 2000, but he decline interest. In 2000, the faltering Green Party decided not to field a candidate after the Democrats' nomination of environmental activist Senator Ralph Nader, who would win an extremely narrow victory against Republican Pat Buchanan, whose own vote was reportedly spoiled by Reform Party candidate Former Congressman George Walker Bush. His 2006 novel An Inconvenient Truth, focusing heavily on the risks of climate change, was derided by both critics and readers as lacking in subtlety, with one reviewer famously commenting that it would have worked better as a documentary. For his literary contributions, Gore was given the 2007 Nobel Prize in Literature.