Fire breathing only makes it harder to talk: An activist with the Science and Rationalists' Association of India demonstrates against the claim that Mother Teresa performed a miracle in Calcutta. Deshakalyan Chowdhury/AFP/Getty Images hide caption

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A man reaches for a wooden cross in the sea during an Epiphany ceremony in the Greek port of Thessaloniki on January 6, 2011. Sakis Mitrolidis/AFP/Getty Images hide caption

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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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