Members of the Mormon Tabernacle Choir raise their voices in unison — and perhaps unify their heart rates, too. George Frey/Getty Images hide caption

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In January, this Saudi man in Riyadh had Twitter open on his computer. Fayez Nureldine /AFP/Getty Images hide caption

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An image taken from a YouTube video depicts a mock news story on the Christian Broadcasting News site, claiming that Pastor Joel Osteen had renounced his faith. YouTube hide caption

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Knights of the Order of Malta walk in procession toward St. Peter's Basilica to mark the 900th anniversary of the Order of the Knights of Malta, on Saturday at the Vatican. Andreas Solaro/AFP/Getty Images hide caption

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President Obama speaking at the National Prayer Breakfast in Washington, D.C., on Thursday. Mandel Ngan /AFP/Getty Images hide caption

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As religious as this country may be, many Americans are not religious at all. The group of religiously unaffiliated — dubbed €œ"nones" €-- has been growing. iStockphoto.com hide caption

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Is there an inherent contradiction in the lives of people who accept and rely on the complexity of modern technology, yet place their ultimate faith in a black-and-white view of the universe based on their religious faith? Yoshikazu Tsuno/AFP/Getty Images hide caption

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Author and evolutionary biologist Richard Dawkins at NPR headquarters in Washington, D.C., on Mar. 22. Doriane Raiman/NPR hide caption

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