"Rocks are the record of our creative planet reinventing itself for four billion years. Nothing is ever lost, just transformed. Marcia Bjornerud's life as a geologist has coincided with an extraordinary period of discovery. From an insular girlhood in rural Wisconsin, she found her way to an unlikely career studying mountains in remote parts of the world. As one of few women in her field, she witnessed the shift in our understanding of the Earth, from solid object to an entity in a constant state of transformation. In the most tumultuous times of her own life, a deep understanding of our rocky planet imbued her life with meaning. The lives of rocks are long and complex, spanning billions of years and yet shaping our own human lives in powerful, invisibleways. Sandstone that filters out pathogens creating underground oases in aquifers of clean water. Ecologite is "the chosen rock" whose formation keeps the planet running. Earth is not just a passive backdrop, or a source of resources to be mined, extracted, and carved out. Rocks are full of wisdom, but somewhere along the way many of us have forgotten how to hear it. When we are uncertain about where to find truth, a geocentric worldview reminds us that we are Earthlings, part of a planetary community where we can find wisdom in the most unlikely places"-- - (Baker & Taylor)
The author reveals how rocks are the hidden infrastructure that keep the planet functioning, from sandstone aquifers purifying the water we drink to basalt formations slowly regulating global climate. Illustrations. Map. Illustrations. Maps. - (Baker & Taylor)
Winner of the 2025 John Burroughs Medal for Natural History Writing
“A beautiful book—at once intimate and sweeping, informative and moving.” —Elizabeth Kolbert, author of Under a White Sky
Earth is vibrantly alive and full of wisdom for those who learn to listen.
Earth has been reinventing itself for more than four billion years, keeping a record of its experiments in the form of rocks. Yet most of us live our lives on the planet with no idea of its extraordinary history, unable to interpret the language of the rocks that surround us. Geologist Marcia Bjornerud believes that our lives can be enriched by understanding our heritage on this old and creative planet.
Contrary to their reputation, rocks have eventful lives–and they intersect with our own in surprising ways. In Turning to Stone, Bjornerud reveals how rocks are the hidden infrastructure that keep the planet functioning, from sandstone aquifers purifying the water we drink to basalt formations slowly regulating global climate.
Bjornerud’s life as a geologist has coincided with an extraordinary period of discovery in the geosciences. From an insular girlhood in rural Wisconsin, she found her way to an unlikely career studying mountains in remote parts of the world and witnessed the emergence of a new understanding of the Earth as an animate system of rock, air, water and life. We are all, most fundamentally, Earthlings and we can find existential meaning and enduring wisdom in stone.
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McMillan Palgrave)
Marcia Bjornerud is a professor of Environmental Studies and Geosciences at Lawrence University, and is the author of Reading the Rocks, Timefulness, and Geopedia. - (McMillan Palgrave)