David W. Marshall, PhD, is a historian and professor emeritus at Texas Tech University, with thirty-eight years of experience teaching, researching, and publishing. He is the author of several works, including Mountain Man: John Colter, the Lewis & Clark Expedition, and the Call of the American West.

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Joelle Jane Marshall is a freelance speaker and mindfulness coach who works closely with fellow Mindfulness For Dummies coauthor Shamash Alidina on workshops for "Mindfulness and Overcoming Fear." She trained in mindfulness with Shamash and meditates and practices yoga regularly.

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Michael Marshall is a science writer interested in life sciences and the environment. He has a BA and MPhil in experimental psychology from the University of Cambridge and an MSc in science communication from Imperial College, London. He has worked as a staff journalist at New Scientist and the BBC.

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Ann Garretson Marshall and her husband Terry taught English in the Philippines as Peace Corps volunteers. She earned an MS in communication arts from Cornell University and has thirty years' experience as a writer, editor, and community-government go-between for issues related to nuclear and hazardous waste cleanup.

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Jonathan Marshall is an investigative historian and award-winning journalist who has published five previous nonfiction books. His articles have appeared in the New York Times, Wall Street Journal, Washington Post, and a variety of scholarly journals. He lives in San Anselmo, California.

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Terry Marshall worked as a reporter and then as the editor of the Glendale News-Herald. He and his wife Ann they taught English in the Philippines as Peace Corps volunteers. Terry earned an MS in rural sociology from the University of Wisconsin and a PhD from Cornell University in sociology of development.

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Wes Marshall, PhD, PE, is professor of civil engineering with a joint appointment in urban and regional planning at the University of Colorado Denver. He is also the director of the CU Denver Transportation Research Center and codirector of the Active Communities/Transportation (ACT) research group.

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Brad Marshall is an author, speaker, psychologist, and workshop facilitator.

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Angela Marshall, MD, FACP, is the founder of Comprehensive Women's Health, Inc., a primary care practice for women in the Washington, DC area. Throughout her medical career, she has impacted the lives of thousands of women by promoting a style of medical practice that emphasizes patient-centered empathic listening.

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Nick Marshall is a New York City-based writer, actor, director, and producer. He studied acting at the William Esper Studio. In collaboration with fellow graduates, he formed The Collective NY, a not-for-profit theater and film company under which he continues to develop numerous productions for the screen and stage.

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Simon Marshall, PhD, trains the brains of endurance athletes and fitness enthusiasts to become happier and more mentally resilient. He is the performance psychologist for BMC Racing, a World Tour professional cycling team.

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