Dr. Kirk Yeager has nearly thirty years of experience with improvised explosives and IEDs; he has presented over 200 talks at international meetings and conferences; and he has produced over eighty specialty publications in the area of explosives and IEDs. He lives near Washington, DC.

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Ashley Jean Yeager is associate news editor at Science News. She has written for Quanta, Science News, Nature, Astronomy, Sky & Telescope, The Scientist, and other publications.

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Selene Yeager is a top-selling health and fitness writer who lives what she writes as a NASM certified personal trainer, USA Cycling certified coach, Pn1 certified nutrition coach, pro licensed off-road racer, and All-American Ironman triathlete. She has authored, coauthored, or contributed to nearly thirty books.

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Tina Yeager embraces audiences with spoken and written messages of encouragement. She is an author, speaker, and life coach who champions the message of Christ-centered esteem. As a licensed counselor she serves Word Weavers International, local student and women's ministries, and others. Visit her at tinayeager.com.

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Julie Brown Yau, PhD, is a psychologist with more than thirty years of experience in somatic and spiritual traditions. Her unique approach blends clinical experience, psychology, physical and subtle body energies, and spiritual perspectives in discussing and healing trauma.

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Bart Yasso is Chief Running Officer for Runner's World and one of the most beloved figures in the sport. Affectionately dubbed the "Mayor of Running," Bart is the public face of Runner's World at races in the United States and abroad. Bart has been with Runner's World since 1987.

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Howard Yaruss is an economist, professor, attorney, businessman, expert witness, and activist who greatly enjoys explaining complex issues in a clear, interesting, and easily accessible way. He has taught a variety of courses on economics and business and currently teaches at New York University.

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Allison Yarrow is an award-winning journalist, speaker, and author of 90s Bitch, a finalist for the Los Angeles Press Club book award. She was a National Magazine Award Finalist, a TED resident, a producer at NBC News and Vice, a reporter and editor at Newsweek and The Daily Beast.

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Rebecca Yarros is the bestselling author of numerous books, including the award-winning Flight & Glory series, the Renegades series, and The Last Letter. Rebecca lives in Colorado with her family. Visit her online at rebeccayarros.com.

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In a Los Angeles political career spanning four decades (City Council 1975-1994, County Board of Supervisors 1994-2014), Zev Yaroslavsky played a central role in shaping America's largest metropolis. He received an MA in history and a BA in economics and history, both from UCLA, where he teaches public policy and history.

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Mark Yarnell is a faculty member of the nation's only college-certified course in network marketing at the University of Illinois–Chicago and an accomplished author, speaker, and international businessman.

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Rene Reid Yarnell is one of the country's most successful and sought-after authorities on network marketing and the author of The New Entrepreneurs and Encyclopedia of Network Marketing.

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