Karl Kuehl was a baseball scout, farm system official, coach and manager in Major League Baseball. Throughout his career, he worked with teams such as the Montreal Expos, the Minnesota Twins and the Oakland Athletics. He was the co-author of two books: The Mental Game of Baseball and A Champion's State of Mind.

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Erika Kubick is the creator of the Chicago-based Cheese Sex Death. A former cheesemonger at the acclaimed cheese shop Pastoral, she is a cheese preacher devoted to educating and exciting cheese lovers everywhere. Kubick launched Cheese Sex Death in 2015 as a blog, and has amassed a following of more than 50,000 readers.

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Martin Krzywdzinski heads the project group 'Globalization, Work, and Production' at the Berlin Social Science Center (WZB). He studied political science at the Free University of Berlin and at the Université Paris VIII (1996–2002), completing his doctorate at the Free University of Berlin (2007).

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Arthur Krystal has written for the New Yorker, the New York Times, the Wall Street Journal, the TLS, Harpers, and the American Scholar, among other publications. His book Agitations: Essays on Life and Literature was a finalist for the 2003 PEN Award for the Art of the Essay.

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Meir Kryger, MD, is a professor in the Yale School of Medicine and chief editor of the most widely used sleep medicine textbook, Principles and Practice of Sleep Medicine. He is recognized as a global authority on sleep and has appeared on Dr. Oz, CNN, and ABC News. He lives in Hamden, Connecticut.

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John Kruth is a musician with nine solo albums to his credit and the author of To Live's to Fly: The Ballad of the Late, Great Townes Van Zandt (winner of the ASCAP Deems Taylor Award) and Bright Moments: The Life and Legacy of Rahsaan Roland Kirk.

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Cristóbal Krusen is a screenwriter, film director, and author who has lived and worked in Latin America, Australia, and the United States. In 1988, he founded Messenger Films, a nonprofit film production company. He currently lives in St. Paul, Minnesota.

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Kevin M. Kruse is professor of history at Princeton University.

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Kevin Kruse is a serial entrepreneur, CEO of Kru Research, and cofounder of the e-Patient Connections conference.

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Jason Kruppa is a music historian and creator of the Producing the Beatles podcast. He is coauthor of All Things Must Pass Away: Harrison, Clapton, and Other Assorted Love Songs. He lives in New Orleans.

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Fred Krupp has been president of the Environmental Defense Fund for twenty-three years.

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