Terry Gross

Brazilian physicist Marcelo Gleiser is the author of the new book, The Prophet and the Astronomer: A Scientific Journey to the End of Time (WW Norton). In it he explores our relationship to the sky and how it has influenced religion and then in turn - science. He writes, 'one of my goals. . is to humanize science, to argue that our scientific ideas are very much a product of the cultural and emotional environment where they originate'. Gleiser is Professor of Natural Philosophy and professor of physics and astronomy at Dartmouth College.

Journalist Steven Erlanger is the Berlin Bureau Chief for the New York Times. Hell talk about European reaction to the Bush administration, its planned invasion of Iraq, and its position on the middle east, and its response to September 11th. And about how the European union is changing the lives of Europeans.

David Kertzer is the author of The Popes Against the Jews: The Vatican's Role in the Rise of Modern Anti-Semitism (Knopf). In the book he focuses on the time period from Napoleon to Hitler, and how "traditional" Catholic forms of dealing with Jews became transformed into modern anti-Semitism. Kertzer is Paul Dupee, Jr. University Professor of Social Science and a professor of anthropology and Italian Studies at Brown University.