A great new season of hope with Pope Francis. Book launch at Columbia University - Italian Academy on April 21 at 7 pm. The apostolic nuncio to UN, Archbishop Bernardito Cleopas Auza, the Italian minister of Environment, Hon. Gian Luca Galletti, and the director of the Earth Institute, Prof. Jeffrey D. Sachs , will discuss about it with a special focus on Francis's effort for the climate change deal. The co-author of "the American Pope", Dr. Paolo Messa (Director of the Center for American Studies in Rome), will be present.