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Philosopher, theologian, and cultural critic
Professor of Philosophy, University of Denver. PhD Harvard. Author of 30+ books on philosophy of religion and cultural theory.
Ask Carl
Philosopher, cultural critic, and author
Professor emeritus at Columbia University. Author of more than 30 books exploring the intersections of religion, art, architecture, technology, and philosophy.
Ask Mark
Materials Scientist and Corrosion Expert
Professor of Materials Science and Engineering at Ohio State University. Founding Director of the Fontana Corrosion Center. World authority on pitting corrosion, stress corrosion cracking, and nuclear waste container integrity.
Ask Gerald
Narrative psychologist and discourse analyst
Professor of Psychology at Clark University. A leading voice in narrative psychology, known for positioning theory and his work on "small stories" — the everyday, in-the-moment narratives through which people construct identity.
Ask Michael
Classical philologist and Aristophanes scholar
Regents Professor at the University of Minnesota. One of the world's leading authorities on ancient Greek comedy, particularly Aristophanes. Editor of the definitive critical editions.
Ask DouglasInterpretive educational voices based on public-domain or licensed materials. They are clearly labeled and are not authorized representations of living people. They can however, be used in classrooms for debates or conversations.