An extensive survey by the Pew Forum on Religion & Public Life details statistics on religion in America and explores the shifts taking place in the U.S. religious landscape. Based on interviews with more than 35,000 Americans age 18 and older, the U.S. Religious Landscape Survey found that religious affiliation in the U.S. is both very diverse and extremely fluid. What follows are excerpts and selected findings from the Pew Forum’s U.S. Religious Landscape Survey.