Kenneth Choi plays the role of Chester Ming in The Wolf Of Wall Street. He gained 20 pounds for the role. Red Granite Pictures/The Kobal Collection hide caption

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Why does there seem to be such a vast space between Etsy and blue-chip virtual auction houses like Sotheby's? Where's the website where you can spend $200 or $2,000 on quality art online? New companies are trying to fill that gap. Don Emmert/AFP/Getty Images hide caption

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Mat Johnson is the author of Pym, Drop, Hunting in Harlem and The Great Negro Plot as well as several graphic novels including Incognegro, Dark Rain and Right State. Meera Bowman Johnson hide caption

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Jean and Carl Boenish in jump down a ledge towards camera. Courtesy of Magnolia Pictures. hide caption

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Jason Wyche/Courtesy of Sean Kelly/Copyright Kehinde Wiley

Casey (Britt Robertson) experiences a fantastic futuristic world in Tomorrowland. Disney hide caption

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National Geographic writer and explorer Dan Buettner studies the world's longest-lived peoples and their lifestyles. Courtesy TEDxTC hide caption

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"Things that only have a 50% chance of happening 20 years from now are supposed to sound like science fiction." - Aubrey de Grey Robert Leslie/TED hide caption

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TED Radio Hour

Aubrey de Grey: Can Aging Be Cured?

Cambridge researcher Aubrey de Grey argues that aging is merely a disease — and a curable one at that.

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Librarian Nancy Pearl shares her selections of under-the-radar books that you may have missed. Emily Bogle/NPR hide caption

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