In February 2013, Pope Benedict said he would become the first pope to retire in 600 years. Check out this episode of Stuff You Should Know to find out just what the pope does and the process of choosing a new one.
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Selects: Mangroves: Nature's Best Tree?
44:31

How the Kowloon Walled City Worked
41:27

Short Stuff: In-Flight Entertainment
12:23