Christiane Ritter was an Austrian activist and author. She wrote A Woman in the Polar Night on her return to Austria from Spitsbergen in 1934. It has since become a classic of travel writing, never going out of print in German and being translated into seven other languages. She died in 2000 at the age of 103.

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Trevor Ritland is an adjunct instructor in the Creative Media & Film program at Northern Arizona University and is the documentarian of "El Dorado: The Search for the Golden Toad" along with other projects exploring imperiled species and environmental mysteries.

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Kyle Ritland earned his MFA in creative writing at the University of California, Riverside while working as a freelance environmental journalist, chasing stories of island foxes, desert birds, and big cats. He lives in the American Northeast with his wife Alannah and their two cats, Hazel and Fiver.

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Mike Ritland is the New York Times bestselling author of Trident K9 Warriors. A former Navy SEAL, he started his own company to train dogs for the SEAL teams, as well as for the U.S. government and many other clients. He also founded the Warrior Dog Foundation to help retired Special Operations dogs live long and happy lives after their service.

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Adam Ritchie advocates for public relations to evolve from its past as an organization's mouthpiece to its future as a creative engine. He has won every award in the industry multiple times, presented at dozens of conferences, and spoken at more than fifty universities on the topic of his book, Invention in PR.

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Donald A. Ritchie is Historian Emeritus of the US Senate. A former president of the Oral History Association, he also served on the council of the American Historical Association and as a delegate to the American Council of Learned Societies.

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Andrea J. Ritchie is a nationally recognized researcher, policy analyst, and expert on policing and criminalization. She is cofounder of Interrupting Criminalization and the In Our Names Network, a network of organizations working to end police violence against Black women, girls, trans and gender nonconforming people.

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Kyle J. Ritchie facilitates the high-performance, sustainable design process for Ayers Saint Gross in their Baltimore and DC offices. He travels nationally to speak on sustainability-related issues.

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Ron Ritchhart is a senior research associate with Project Zero at the Harvard Graduate School of Education, where he directs the worldwide Cultures of Thinking Project. He is also a fellow at the University of Melbourne, Australia, and a recipient of the Presidential Award for Excellence in Mathematics Teaching.

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Aaron Michael Ritchey is the author of twenty-one novels and numerous pieces of short fiction. He lives in Colorado with his wife and two daughters.

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Don Richard Riso is the foremost writer and developer of the Enneagram in the world today. The most-published and bestselling author in the field, he is an internationally recognized authority on the subject. He is the president of Enneagram Personality Types, Inc., and founder of The Enneagram Institute.

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Barbara J. Risman is Distinguished Professor of Arts & Sciences in the Department of Sociology at the University of Illinois at Chicago. She is the author of Gender Vertigo: American Families in Transition and coeditor of Families as They Really Are and Handbook of the Sociology of Gender.

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