Juliana Martinez, PhD, is a licensed psychologist in New York City working predominantly with young adults. She has worked at various college counseling centers.

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Deborah Martinsen, a distinguished scholar and teacher of Slavic literature at Columbia University, specialized in Dostoevsky. She wrote and edited books and articles on narrative theory and Dostoevsky's works, including Dostoevsky in Context, Surprised by Shame, and Dostoevsky's "Crime and Punishment": A Reader's Guide.

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Kati Marton is an award-winning former NPR and ABC News correspondent and the author of the New York Times bestseller Hidden Power: Presidential Marriages That Shaped Our History.

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Jennie Marts is the USA Today bestselling author of award-winning books filled with love, laughter, and always a happily ever after.

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Robin Marty is a writer and reporter who covers abortion access and the pro-choice and pro-life movement. She has spent the last decade tracking abortion restrictions, visiting current and former clinic sites, and interviewing activists on both sides of the abortion divide.

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Kristina Marusic is an award-winning journalist who covers environmental health and justice for Environmental Health News. Her personal essays and reporting on topics have been published by outlets including CNN, Slate, Vice, Women's Health, the Washington Post, MTV News, the Advocate, and Bustle, among others.

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William Marvel is the author of Lincoln's Darkest Year, Mr. Lincoln Goes to War, Lee's Last Retreat, Andersonville, and several other acclaimed books on the Civil War. He has won a Lincoln Prize, the Douglas Southall Freeman Award, and the Bell Award.

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Paula Marvelly is an author, filmmaker, creator and editor of the Culturium, which is a blog and newsletter that explores the way in which mystical spirituality manifests through the cultural arts. She is the author of two nonfiction books and an artistic filmmaker.

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Alex Marwood is the pseudonym of a journalist who has worked extensively across the British press. Her first novel, The Wicked Girls, won the Edgar Award for Best Paperback Original. The Killer Next Door, her second novel, won a Macavity Award for Best Mystery Novel.

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Karl Marx (1818–1883) was a German philosopher and political theorist best-known as the author, with Friedrich Engels, of The Communist Manifesto.

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Kate L. Mary is an award-winning author of adult, new adult, and young adult fiction, ranging from post-apocalyptic tales of the undead to speculative fiction and contemporary romance. Her books include When We Were Human, Outliers, Tribe of Daughters and the Broken World series. Visit her at katelmary.com.

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John M. Marzluff is professor of environmental and forest sciences at the University of Washington and is the author or coauthor of several books, including In the Company of Crows and Ravens, Dog Days, Raven Nights, and Welcome to Subirdia. He lives in Snohomish, Washington.

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