Each week, Ventricles introduces an interesting topic about science and technology, from the past, the present and sometimes (how we imagine) the future. Featuring interviews with scholars working at the intersection of science, religion and culture, Ventricles explores the many ways that people know and have known the world.

Ventricles is a new podcast written and produced by Shireen Hamza for the Science, Religion and Culture Program at Harvard Divinity School. We'd love to hear your thoughts -- write to us at

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    The Pulse

    The body has many rhythms, but the pulse is one that people have paid close attention to. Over the last two millennia, the pulse has been used as a diagnostic tool in both Greek and Chinese medicine. In this episode, Professor Shigehisa Kuriyama discusses the history of the pulse in these two traditions. As he explains, the very conception of what the pulse is, how to sense it and what it can tell us about the body has changed over the course of its history.

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    Telling Time

    How have humans kept track of time? What technologies have they developed to tell time, and how have they been influenced by religious and scientific cultures? In this episode, Dr. Sara Schechner, a historian of astronomy, speaks about the history of timekeeping, and how timekeeping technologies have shaped people’s sense of time.