Joel L. Young, MD, is the medical director and founder of the Rochester Center for Behavioral Medicine. Dr. He is the author of When Your Adult Child Breaks Your Heart, ADHD Grown Up: A Guide to Adolescent and Adult ADHD, and Contemporary Guide to Adult ADHD.

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William B. Young, MD, FAHS, FAAN, is professor of neurology, director of the inpatient headache unit at Thomas Jefferson University in Philadelphia. He is a fellow of the American Headache Society and the American Academy of Neurology.

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John K. Young, PhD, is a professor at Howard University and the author of Sacred Sites of the Knights Templar.

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Shena J. Young, PsyD, is a licensed body centered psychologist-healer, artist, and Iyalorisa. She owns a private practice, embodied truth healing & psychological services, in Los Angeles, California, where she offers mind-body-heart-spirit care in healing from sexual, racial, intergenerational, and ancestral traumas.

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Jennifer Youngblood has BA in English and Social Sciences from Brigham Young University where she served as Miss BYU Hawaii in 1989. Before becoming an author, she worked as the owner and editor of a monthly newspaper named the Senior Times. She now lives in the Rocky Mountains with her family.

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Stephen M. Younger is the president of Sandia National Laboratories in Albuquerque, New Mexico. He previously served as president of National Security Technologies, LLC, and director of the Defense Threat Reduction Agency. He has written extensively on national security, anthropology, and physics.

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David S. Younger, MD, is a world-renowned expert in neurology and the author of several medical books, as well as over 200 peer-reviewed articles, book chapters, and abstracts.

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William H. Youngs, PhD, is a clinical psychologist with a private practice in clinical neuropsychology. He has been a clinical neuropsychologist with Memorial Hospital of South Bend for twenty-five years, and a visiting assistant professor of psychology at Saint Mary's College in Notre Dame, Indiana.

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John Youskauskas is a commercial pilot for a major fractional jet operator with more than thirty years of experience in flight operations, aviation safety, and maintenance.

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Michael Youssef is the founder and president of Leading The Way with Dr. Michael Youssef and founding pastor of The Church of The Apostles in Atlanta, Georgia. The author of Life-Changing Prayers and Counting Stars in an Empty Sky, Youssef lives with his wife in Atlanta.

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Brenna Yovanoff is the New York Times bestselling author of many works of short fiction and novels, including The Replacement, The Space Between, and Paper Valentine. She also coauthored The Curiosities with Maggie Stiefvater and Tessa Gratton. Brenna lives in Denver, Colorado. Visit her at brennayovanoff.com.

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Lea Ypi is a professor of political theory at the London School of Economics, and a prominent left-wing voice in Europe. She lives in London and contributes regularly to the Guardian.

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