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Sergio Hernandez is a producer for CNN's data journalism team in Atlanta. His was previously a reporter and graphics/interactives developer for Mashable, a senior editor for The Week, and a contributing reporter for ProPublica.

Matt Stiles is a Seoul-based data journalist who writes about South Korea for the Los Angeles Times. Before moving to Seoul, Stiles was a national economics correspondent at The Wall Street Journal, data editor at NPR and the founding news applications editor at The Texas Tribune. @stiles.

Alyson Hurt is the graphics editor at NPR, serving on the Visuals team. Previously at The Washington Post and The Arizona Republic. Graduate of ASU's Cronkite School and Georgetown's CCT program. @alykat