Nicholas D. Kristof

Nicholas D. Kristof is a New York Times op-ed columnist and two-time Pulitzer Prize winner. With his wife, Sheryl WuDunn, he has written four best-selling books, including the No. 1 New York Times best-seller Half the Sky. Kristof and WuDunn were the first married couple to win a Pulitzer for journalism, for their coverage of the Tiananmen Square democracy movement in China and the massacre that followed. Kristof later won a second for his columns from Darfur. Kristof and WuDunn live in the New York area with their three children.

Biography from amazon.com. Photo from the Half the Sky movement website.