Children of Men DVD was released in Europe on January 15, 2007 and in the United States on March 27, 2007. This half-hour documentary by director Alfonso Cuarón entitled "The Possibility of Hope" is included in the extras. The documentary explores the intersection between the film's themes and reality with a critical analysis by eminent scholars: the Slovenian sociologist and philosopher Slavoj Žižek , anti-globalization activist Naomi Klein, futurist James Lovelock, sociologist Saskia Sassen, human geographer Fabrizio Eva, cultural theorist Tzvetan Todorov, and philosopher and economist John N. Gray.