Mary Ziegler is a professor of law at UC Davis School of Law. She is one of the leading historians of the abortion debate and the author of four books on US law and politics, including the award-winning After Roe: The Lost History of the Abortion Debate.

See Full Bio

Mano Ziegler (1908–1991) was a pilot in the Luftwaffe during World War II. From 1943 until the war's end he flew the Me 163 with Erprobungskommando 16 (Operational Test Unit 16) and Jagdgeschwader 400 (Fighter Group 400). After the war, he eventually became editor-in-chief of the Flug-Revue aviation monthly in Stuttgart.

See Full Bio

Maddie Ziegler is an actor, model, and New York Times bestselling author. She is best known for her work with Sia, including the iconic music video "Chandelier." She has also made appearances on television shows such as Pretty Little Liars, Austin & Ally, and as the youngest judge on Fox's So You Think You Can Dance.

See Full Bio

Lenora M. Ziegler, LCSW, is a licensed clinical social worker in private practice in Manalapan, New Jersey, where she specializes in working with teenagers, college students, and the adults who care for them. She is certified in anxiety treatment and dialectical behavior therapy (DBT).

See Full Bio

Joe Zieja is an author with a long history of doing things that have almost nothing to do with writing at all. A graduate of the United States Air Force Academy, he dedicated over a decade of his life to wearing The Uniform. He is also a commercial voice-over artist and a composer of music for video games and commercials.

See Full Bio

Mimi Zieman, MD writes about medical topics to empower people with information and writes creatively to explore the meaning behind experiences we share. In addition to Tap Dancing on Everest, she has written a play, The Post-Roe Monologues, and is a coauthor of the medical guide, Managing Contraception.

See Full Bio

Pat Zigarmi is a Senior Consulting Partner for The Ken Blanchard Companies, a captivating motivational speaker, a highly regarded management consultant and trainer, a best-selling author, and an experienced businesswoman.

See Full Bio

Jay Zigmont, PhD, MBA, CFP, is the author of The Childfree Guide to Life and Money: Make Your Finances Simple So Your Life Without Kids Can Be Amazing.

See Full Bio

Philip Zimbardo, a professor emeritus at Stanford University and past president of the American Psychological Association, designed and narrated the award-winning PBS series Discovering Psychology. He has written more than fifty books, including the New York Times bestseller The Lucifer Effect, and lives in San Francisco.

See Full Bio

Kristen Zimmer is a New Jersey–based freelance writer and editor. A member of the International Women's Writing Guild, she holds a BA in English with a concentration in creative writing from Montclair State University. Visit Kristen at authorkristenzimmer.com.

See Full Bio

Carl Zimmer is a columnist for the New York Times, where he has contributed articles since 2004. His writing has earned a number of awards, including the Stephen Jay Gould Prize. He is also professor adjunct of biophysics and biochemistry and a lecturer in English at Yale University. He lives in Guilford, Connecticut.

See Full Bio

Keith Zimmerman is one half of a twin-brother writing team. He and his brother, Kent Zimmerman, have coauthored or contributed to over sixteen books, including Hell's Angel with Ralph "Sonny" Barger and Rotten with John Lydon.

See Full Bio