In the second part of our two-part series "The Science of Faith," University of Pennsylvania's Dr. Andrew Newberg looks for an explanation for what most regard as inexplicable. He is determined to unravel the relationship between faith and science by studying what happens in the brain during the deepest moments of faith -- or when eight Americans speak in tongues.
(Originally submitted to Youtube.com by katebohner, on 2007-07-13)