A popular bestseller by Pulitzer Prize winning authors Nicholas Kristof and Sheryl WuDunn explores the unimaginable horrors and challenges facing women around the world. The 2009 non-fiction success, “Half the Sky: Turning Oppression into Opportunity for Women Worldwide,” has inspired a new two-part documentary by the same name, featuring celebrities from Olivia Wilde to Meg Ryan who travel the world with Kristof and WuDunn to address the hopes and struggles of exploited women. The widely acclaimed authors sit down with Soledad O’Brien to discuss the documentary, which will air in two parts on PBS on Monday and Tuesday.