Season 2 Episode 3 - Strata: Stories from Deep Time with Laura Poppick

In this episode of the Book Science Podcast, I talk with science and environmental journalist Laura Poppick about her book, Strata: Stories from Deep Time (Illustrations by Sarah Gilman). We explore the geologic lens, a way of seeing the world that transforms ordinary landscapes into a 4.5-billion-year narrative. From the Great Oxygenation Event to the surprising role of mud in Earth history, Laura explains how geologists decode the Earth through layered rock. We also discuss the her "lyric preludes", which use poetry to set the scene. We also talk about stratigraphy as a contemplative, almost meditative practice of paying attention to the planet's oldest archives.

Beyond the science, we delve into the human side of research and the personal sacrifices involved in field work. Drawing on our shared experiences of working abroad, and we reflect on how studying deep time provides a humbling perspective on our own lives. Whether discussing the literal taste of dinosaur bones or the ancient smell of prehistoric lakebeds, this conversation emphasizes that science is a powerful tool for connection, both with each other and with this our only home, the Earth.

More from Laura Poppick:
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Laura's website
Laura's substack
Laura on bluesky

Summary

• 02:19–02:53 Intro: Tripp introduces Strata as a gift of "intimacy with a place" and asks for a definition of the field.
• 02:53–04:43 Defining Strata: Laura explains strata as layers of sediment (silt, clay, sand) that turn into a "rock record" over millions or billions of years.
• 05:01–08:35 The Geologic Lens: Laura discusses her transition from a Princeton lab manager in South Australia to a science "translator" and journalist.
• 10:23–11:24 John McPhee Influence: A discussion on modernizing the tradition of geology writing and the inspiration of Basin and Range.
• 11:44–12:47 Visuals: Laura explains commissioning illustrator Sarah Gilman to create immersive "worlds" for the book's four main sections.
• 13:11–14:22 Lyric Preludes: Why Laura uses "lyric preludes"—poetic yet factually accurate introductions—to set the scene for each era.
• 14:28–17:06 Writing Rituals: The benefit of morning routines and why writing by hand provides "spaciousness" and a sense of calm.
• 18:01–20:51 Deep Time Scale: Using an arm-span analogy to show that human history is just a "pinky fingernail" on the 4.5 billion-year timeline.
• 21:35–23:29 The Air Section: A look at the Great Oxygenation Event and how oxygen was initially a "toxic" gas that triggered mass extinctions.
• 24:08–27:23 The Evolution of Mud: How the rise of land plants 458 million years ago stabilized soil, created floodplains, and allowed for human civilization.
• 28:02–31:15 Rocks as Stories: Why stratigraphy offers "drafts of stories" rather than concrete answers, requiring scientists to be "willing to be wrong."
• 33:55–36:07 Personal Sacrifice: A candid look at the "glamorous but difficult" reality of field work and being away from family during personal loss.
• 36:44–37:57 Mindfulness in Science: Laura describes geology as a contemplative practice that requires "breathing in and out" while noticing the ordinary.
• 42:11–43:12 The Ediacaran Period: If she had a time machine, Laura would visit the first visible, non-single-celled life forms at the bottom of the ocean.
• 43:21–44:42 Sensory Geology: Practical field tips: why dinosaur bones "stick" to your tongue and how ancient rocks still smell like prehistoric lakes.

Laura's Book Reccomendations​

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