President Barack Obama greets a young child dressed as the Pope and riding in a "Popemobile" as he hands out treats to children trick-or-treating for Halloween on the South Lawn of the White House in Washington, DC. SAUL LOEB/AFP/Getty Images hide caption

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Trick-or-Treating With Princesses, Superheroes And The Pope

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Things That Go Bump In The Lab: Halloween And The Science Of Fear

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The scariest part of the holiday comes in the days that follow, as parents fight and negotiate to limit how much candy their kids eat. NPR's Gisele Grayson decided to pay her kids off to give up their loot. iStockphoto hide caption

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Candice Nelson fits her daughter Arya Kubesh with a Halloween hat at a store at Galleria Mall in Edina, Minn. Retailers are hoping Halloween will give them a good bounce into the peak spending time of the year. Elizabeth Flores/MCT/Landov hide caption

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For This Job, You Need A Creepy Voice And A Fabulous Scream

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Grace Feigh and Melissa Sack of Dapper Cadaver, a Hollywood-based company that specializes in horror props for movies, television and Halloween enthusiasts. Beth Accomando /KPBS hide caption

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The Business Of Halloween Means You Can Buy An Arm And A Leg

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The Witch Head nebula, a spooky image from NASA. But is it scarier that more than half of adults think about the best way to eat candy corn? NASA.gov hide caption

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