Greg Mortenson is an American humanitarian, professional speaker, writer, and former mountaineer. He is a co-founder and former executive director of the non-profit Central Asia Institute, from which he was forced to resign as executive director following an investigation by the Montana attorney general, and the founder of the educational charity Pennies for Peace. Mortenson is the co-author of The New York Times Bestseller, Three Cups of Tea, which stayed on the New York Times bestseller list for 220 weeks. Three Cups of Tea has been published in 47 languages. Mortenson is also the author of Stones into Schools: Promoting Peace with Books, Not Bombs, in Afghanistan and Pakistan. Mortenson has been criticized by writers such as Peter Hessler and Jon Krakauer for financial mismanagement of his charity, for "dodging accountability" and for writing a book Krakauer described as "riddled with lies". Source: Wikipedia