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Strata: Stories from Deep Time
A revelatory journey through four moments in Earth’s deep past, and their lessons for our future.
The epic stories of our planet’s 4.54-billion-year history are written in strata—ages-old remnants of ancient seafloors, desert dunes, and riverbeds striping landscapes around the world. In this brilliantly original debut work, science writer Laura Poppick decodes strata to lead us on a journey through four global transformations that made our lives on Earth possible: the first accumulations of oxygen in the atmosphere; the deep freezes of "Snowball Earth"; the rise of mud on land and accompanying proliferation of plants; and the dinosaurs’ reign on a hothouse planet
Poppick introduces us to the researchers who have devoted their careers to understanding the events of deep time, including the world’s leading stegosaur scientist. She travels to sites as various as a Minnesotan iron mine that runs half a mile deep and a corner of the Australian Outback where glacial deposits date from the coldest times on Earth. Ultimately, she demonstrates that the planet’s oceans, continents, atmosphere, life, and ice have always conspired to bring stability to Earth, even if we are only just beginning to understand how these different facets interact.
A work in the tradition of John McPhee, Strata allows us to observe how the planet has responded to past periods of environmental upheaval, and shows how Earth’s ancient narratives could hold lessons for our present and future.
The epic stories of our planet’s 4.54-billion-year history are written in strata—ages-old remnants of ancient seafloors, desert dunes, and riverbeds striping landscapes around the world. In this brilliantly original debut work, science writer Laura Poppick decodes strata to lead us on a journey through four global transformations that made our lives on Earth possible: the first accumulations of oxygen in the atmosphere; the deep freezes of "Snowball Earth"; the rise of mud on land and accompanying proliferation of plants; and the dinosaurs’ reign on a hothouse planet
Poppick introduces us to the researchers who have devoted their careers to understanding the events of deep time, including the world’s leading stegosaur scientist. She travels to sites as various as a Minnesotan iron mine that runs half a mile deep and a corner of the Australian Outback where glacial deposits date from the coldest times on Earth. Ultimately, she demonstrates that the planet’s oceans, continents, atmosphere, life, and ice have always conspired to bring stability to Earth, even if we are only just beginning to understand how these different facets interact.
A work in the tradition of John McPhee, Strata allows us to observe how the planet has responded to past periods of environmental upheaval, and shows how Earth’s ancient narratives could hold lessons for our present and future.
288 pages, Hardcover
First published July 15, 2025
About the author
Laura Poppick
3 books30 followersLaura Poppick is a science and environmental journalist whose writing has appeared in the New York Times, Smithsonian, Scientific American, Wired, Audubon, National Geographic, Science, and elsewhere. She has been listed as a finalist for the National Association of Science Writers Science in Society Journalism Award and the Maine Literary Awards Short Works Competition in Nonfiction, among others. She lives in Portland, Maine.
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Displaying 1 - 30 of 101 reviews
June 17, 2025
"This is what I want for you in reading this book. I want you to bask in this current moment, in the awe that we get to be here at all."
I love the dual nature of the phrase “deep time.” As Laura Poppick’s beautiful science and nature book, Strata, shows, it refers not only to the physical depth of the minerals, fossils, relics, and other materials that allow scientists to study Earth’s history, but also to the profundity of a study that connects our lives to the many millions of years that came before us.
Strata combines all of the best elements of nature writing. The overarching natural and geological themes remind me of those from one of my favorite nature books, Robert Macfarlane’s Underland. Furthermore, I love the way that Poppick brings in the social and human sides of science.
I enjoyed “meeting” the author and the other scientists she worked with, in particular reading about her own awe at and gratitude for the Earth (as evidenced by the quote above from her introduction). And I appreciated the look at things such as efforts toward making geoscience more inclusive for indigenous people and incorporating their traditional beliefs.
A few other notes:
It’s always a good sign when a nonfiction book offers such interesting facts that it makes you pause to tell someone something that you just learned. Like that flowers are millions of years older than grasses — fascinating!
Between reading Chet Raymo’s Honey from Stone recently and the news in this book that Dingle’s earth contains traces of some of the world’s oldest land plants, I think I need to make another trip out to the peninsula soon and go exploring.
The section on knowing so much about the scientific elements of dinosaurs (their anatomy, etc.) but still so little about the “social” side of them (how they acted and how they relate to each other) and how scientists are theorizing on these things, was so interesting.
Thank you so much to the author, W.W. Norton and Company, and Netgalley for providing an advanced reader’s copy of this book in exchange for an honest review. I’m going to leave you with a passage that really spoke to me, because I think if you are the perfect audience for this wonderful book, it will be all the convincing you need to read it:
"If that asteroid had landed just a few minutes later in water just a few hundred meters deeper, everything could have been different. Less rock may have vaporized, less solar radiation may have been blocked. Sauropods and stegosaurs and tyrannosaurs and all the rest of them may have clawed their way through and come out on the other side, never opening up the space for those small, hairy beings to rise to dominance.
We grew from that devastation, that piece of space debris thrown randomly down to Earth. That wreckage brought with it the possibility of bouquets and dance parties and fresh-baked pastries; orchestras and paintings with pigments in heartbreaking hues. It brought the possibility of narratives, of stories passed down through mouths and later through hands and ink and paper and now silicon. Of people who could weave stories from stone.
This hits me not only when I'm sitting with strata but when I'm out in the world in a wholly human experience. I'm at a concert at a small stadium, my shoulder brushes the arm of the man sitting next to me. He slurps soda from a plastic straw and bobs his head as he mouths the words to nobody. Everyone is sweaty and we all know the song. When the stage lights flicker from fuchsia to yellow to alien green in tempo with the bass, we scream and cheer because we get to be here. The lights flash again and for a moment, in the darkness, I'm not here but floating through the depths of an Ediacaran sea. I'm swimming through the brine of those sightless, earless, boneless beings.
I'm remembering the ice ages that they sprang from and the mudlessness of land in those days. I'm remembering the lunglessness and soundlessness and now I'm remembering to breathe and turn back to the music. .
But I can't take my mind off it. How, after all those epochs, after everything Earth had been through, the thing that made this moment possible may have just been that random piece of space junk."
December 9, 2025
Got the audiobook arc for review.
Its was easy getting lost in the facts and descriptions. About the strata, the history and current time. Highly enjoyed the audiobook narratior felt like it was a perfect for the book. Never tought much about strata before but always enjoy when a book can make me interested in a topic I havnt tought much about or heard about a lot.
Its was easy getting lost in the facts and descriptions. About the strata, the history and current time. Highly enjoyed the audiobook narratior felt like it was a perfect for the book. Never tought much about strata before but always enjoy when a book can make me interested in a topic I havnt tought much about or heard about a lot.
June 29, 2025
Perhaps unfairly, I went into this book hoping to find another “The Underworld.” A book that dives deep on a niche topic, but brings you along for the ride, making you a convert by the sheer force of the author’s enthusiasm. Strata: Stories from Deep Time is a serviceable introduction to the study of stratigraphy, and has some interesting information, but if you’re not already interested in the field, I’m not sure this book is going to draw you in.
On the other hand, if you are interested in the natural world, and how it’s evolved and changed, and all the pieces and things that had to come about just so, so that humans could be here to crate the tango, and lasagna, this book has a lot to offer you. Or if you’re simply curious about how we know what we know about geologic history-this book will answer your questions.
I received an ARC in exchange for this honest review.
On the other hand, if you are interested in the natural world, and how it’s evolved and changed, and all the pieces and things that had to come about just so, so that humans could be here to crate the tango, and lasagna, this book has a lot to offer you. Or if you’re simply curious about how we know what we know about geologic history-this book will answer your questions.
I received an ARC in exchange for this honest review.
July 22, 2025
Had the privilege to blurb an advance copy of this lovely book; here’s what I wrote:
“Rock has never felt more alive, nor deep time more current, than in Laura Poppick’s absorbing, illuminating Strata. In the intrepid tradition of John McPhee and Elizabeth Kolbert, Poppick spelunks into our planet’s history to unearth the ancient dramas that sculpted our landscapes and ourselves. This book is an indispensable guide to the dynamic stories our planet writes in stone.”
“Rock has never felt more alive, nor deep time more current, than in Laura Poppick’s absorbing, illuminating Strata. In the intrepid tradition of John McPhee and Elizabeth Kolbert, Poppick spelunks into our planet’s history to unearth the ancient dramas that sculpted our landscapes and ourselves. This book is an indispensable guide to the dynamic stories our planet writes in stone.”
August 26, 2025
This book was impressive! Will post a full review soon!
March 8, 2026
Strata strikes a wonderful balance between rigorous scientific discussion, storytelling, and environmental commentary. We learn how the past has so much to teach us about the present and how we got here, and the incredible geologic stories from deep time. The author weaves a compelling narrative across geologic time, building engaging characters from real world scientists along the way.
This book gave me a newfound appreciation for the slow and methodical movement of time in shaping the world around us. And how the things we take for granted (oxygen) are the result of massive global events that took place billions of years ago. It made me feel “small” but in a good way, helping me think about how we should enjoy this relatively short time on this earth that only formed this way out of pure chance.
I usually shy away from popular environmental science books, as they can often times feel a bit “preachy”. Strata was the opposite; insightful, engaging, and fun!
This book gave me a newfound appreciation for the slow and methodical movement of time in shaping the world around us. And how the things we take for granted (oxygen) are the result of massive global events that took place billions of years ago. It made me feel “small” but in a good way, helping me think about how we should enjoy this relatively short time on this earth that only formed this way out of pure chance.
I usually shy away from popular environmental science books, as they can often times feel a bit “preachy”. Strata was the opposite; insightful, engaging, and fun!
February 7, 2026
Wow what a read. I am exhausted. So well written.
I knew nothing of geology, no background. It felt like trying to master calculus while struggling with addition.
Ultimately the book is about all the feedback loops between the living and the non living. Oxygen begets complex life, life changes the atmosphere.
From an interview referenced in the book
“The landscapes and seascapes of Earth’s surface provide the theatre for life,” he wrote, “but to what extent did the actors build the stage?”
I was struck by the humility of the geologist, not afraid to say "we don't know, and may never know", unlike the hubris of most disciplines.
Referencing Carbon Dating
“It’s how we know that sharks are older than the North Star, eyes are older than leaves, horseshoe crabs appeared hundreds of millions of years before flowers, and flowers showed up dozens of millions of years before grasses.
It’s how we know that, for more than half of Earth’s existence, there was no oxygen in the atmosphere, and for billions of years beyond that, there were no lungs to breathe it in.”
I only have one complaint. I wish there had been more pictures of the strata she was describing, and timelines showing the major periods of time and events.
I knew nothing of geology, no background. It felt like trying to master calculus while struggling with addition.
Ultimately the book is about all the feedback loops between the living and the non living. Oxygen begets complex life, life changes the atmosphere.
From an interview referenced in the book
“The landscapes and seascapes of Earth’s surface provide the theatre for life,” he wrote, “but to what extent did the actors build the stage?”
I was struck by the humility of the geologist, not afraid to say "we don't know, and may never know", unlike the hubris of most disciplines.
Referencing Carbon Dating
“It’s how we know that sharks are older than the North Star, eyes are older than leaves, horseshoe crabs appeared hundreds of millions of years before flowers, and flowers showed up dozens of millions of years before grasses.
It’s how we know that, for more than half of Earth’s existence, there was no oxygen in the atmosphere, and for billions of years beyond that, there were no lungs to breathe it in.”
I only have one complaint. I wish there had been more pictures of the strata she was describing, and timelines showing the major periods of time and events.
June 27, 2025
Book Review: Strata: Stories from Deep Time by Laura Poppick
Laura Poppick’s Strata: Stories from Deep Time is a masterful synthesis of geological storytelling and scientific inquiry, offering a profound meditation on Earth’s 4.54-billion-year history through the lens of its layered landscapes. As a woman and scholar in environmental studies, I was struck by Poppick’s ability to weave personal narrative with rigorous research, creating a work that feels both intimate and expansive. Her exploration of four pivotal planetary transformations—from the oxygenation of the atmosphere to the reign of dinosaurs—resonated deeply, not just as scientific milestones but as metaphors for resilience and interconnectedness.
What moved me most was Poppick’s humanization of deep time. By spotlighting the researchers—like the world’s leading stegosaur scientist—who dedicate their lives to deciphering Earth’s strata, she transforms abstract epochs into relatable quests for knowledge. Her visits to sites like the Minnesotan iron mine and Australian Outback glacial deposits evoked a visceral sense of wonder, grounding cosmic-scale events in tangible landscapes. As a reader, I found myself pausing to reflect on how these ancient narratives mirror contemporary environmental crises, particularly Poppick’s emphasis on Earth’s inherent stability amid upheaval. Her prose, lyrical yet precise, mirrors the strata she describes: layered with meaning, each sentence revealing new depths.
However, the book’s strength—its focus on geological processes—sometimes sidelines the socio-political dimensions of environmental storytelling. While Poppick deftly explains how Earth’s systems interact, I longed for more explicit connections to Indigenous knowledge or feminist ecocriticism, frameworks that could enrich her analysis of human-planet relationships. Additionally, the four-case-study structure, though effective, leaves gaps; a chapter on mass extinctions or anthropogenic impacts might have bridged past and present more urgently.
Strengths:
-Narrative Brilliance: Poppick’s McPhee-esque style makes complex science accessible without sacrificing depth.
-Emotional Resonance: Her portraits of scientists and landscapes invite readers to feel deep time.
-Interdisciplinary Potential: A model for bridging geology, journalism, and environmental humanities.
Critiques:
Missing Frameworks: Greater engagement with Indigenous or feminist perspectives could amplify its relevance.
Temporal Gaps: A fifth case study on human-driven change would strengthen its contemporary stakes.
Rating: ★★★★☆ (4.5/5) – A revelatory debut that redefines our relationship to planetary history, though its silences on human narratives within geology hold it back from perfection.
Thank you to W. W. Norton and Edelweiss for providing a free advance copy in exchange for an honest review.
Final Thought: Poppick’s work is a strata itself—layers of wonder, wisdom, and warning. It leaves readers not just informed but altered, with a newfound reverence for the ground beneath our feet and the futures it might hold.
Laura Poppick’s Strata: Stories from Deep Time is a masterful synthesis of geological storytelling and scientific inquiry, offering a profound meditation on Earth’s 4.54-billion-year history through the lens of its layered landscapes. As a woman and scholar in environmental studies, I was struck by Poppick’s ability to weave personal narrative with rigorous research, creating a work that feels both intimate and expansive. Her exploration of four pivotal planetary transformations—from the oxygenation of the atmosphere to the reign of dinosaurs—resonated deeply, not just as scientific milestones but as metaphors for resilience and interconnectedness.
What moved me most was Poppick’s humanization of deep time. By spotlighting the researchers—like the world’s leading stegosaur scientist—who dedicate their lives to deciphering Earth’s strata, she transforms abstract epochs into relatable quests for knowledge. Her visits to sites like the Minnesotan iron mine and Australian Outback glacial deposits evoked a visceral sense of wonder, grounding cosmic-scale events in tangible landscapes. As a reader, I found myself pausing to reflect on how these ancient narratives mirror contemporary environmental crises, particularly Poppick’s emphasis on Earth’s inherent stability amid upheaval. Her prose, lyrical yet precise, mirrors the strata she describes: layered with meaning, each sentence revealing new depths.
However, the book’s strength—its focus on geological processes—sometimes sidelines the socio-political dimensions of environmental storytelling. While Poppick deftly explains how Earth’s systems interact, I longed for more explicit connections to Indigenous knowledge or feminist ecocriticism, frameworks that could enrich her analysis of human-planet relationships. Additionally, the four-case-study structure, though effective, leaves gaps; a chapter on mass extinctions or anthropogenic impacts might have bridged past and present more urgently.
Strengths:
-Narrative Brilliance: Poppick’s McPhee-esque style makes complex science accessible without sacrificing depth.
-Emotional Resonance: Her portraits of scientists and landscapes invite readers to feel deep time.
-Interdisciplinary Potential: A model for bridging geology, journalism, and environmental humanities.
Critiques:
Missing Frameworks: Greater engagement with Indigenous or feminist perspectives could amplify its relevance.
Temporal Gaps: A fifth case study on human-driven change would strengthen its contemporary stakes.
Rating: ★★★★☆ (4.5/5) – A revelatory debut that redefines our relationship to planetary history, though its silences on human narratives within geology hold it back from perfection.
Thank you to W. W. Norton and Edelweiss for providing a free advance copy in exchange for an honest review.
Final Thought: Poppick’s work is a strata itself—layers of wonder, wisdom, and warning. It leaves readers not just informed but altered, with a newfound reverence for the ground beneath our feet and the futures it might hold.
December 30, 2025
I love this combination of journalism, memoir, and science writing. It makes information accessible to readers like me who need narrative and character and emotion to anchor the facts. Strata is the story of our planet, stretching back as far as our imagination and technology can take us. It is a survey of the current state of geology with fascinating discussions about where it might be headed. I have never been a geology nerd but this book might have turned me into one. Jeannie Sheneman's warm narration makes the material more accessible. It is a reassuring presence when the science gets a bit intimidating. Thank you to Laura Poppick for writing such a fascinating book. Few things are better than reading a book when the author is genuinely obsessed with the subject. (Tangential rant: I wish publishing wasn't a business. I wish everyone could follow their curiosity instead of market trends when picking a topic to explore. I wish I could live a hundred lifetimes just so I could hear about each person's passing fancy or lifetime obsession. I wish there was a way to sustainable support extremely niche subjects. I want to live in a world fueled by curiosity, not cash.) Thank you to Tantor and NetGalley for the audioARC.
read_partial
July 23, 2025The book is a bit more information dense than I was hoping for. It is readable, but you probably need a strong desire in reading about geology, deep time and stratigraphy.
The book is organized into four parts, Air, Ice, Mud and Heat.
I got through much of the section on Air, that contains a discussion on the GOE short for Great Oxygenation Event, or Great Oxidation Event. Scientists are having difficulty in determining when exactly this took place, and how. The rocks have to tell the story since this was such a very long time ago. The evidence is still there, but fragmentary, difficult to decipher. Opinions differ on what the rock is revealing. The details of this are interesting to some extent.
I image the rest of the book will be at the same detailed level and my interest just isn’t sustaining that deep dive at the moment. Perhaps I will attempt the book at another time, but for now I am leaving it here, partially read.
The book is organized into four parts, Air, Ice, Mud and Heat.
I got through much of the section on Air, that contains a discussion on the GOE short for Great Oxygenation Event, or Great Oxidation Event. Scientists are having difficulty in determining when exactly this took place, and how. The rocks have to tell the story since this was such a very long time ago. The evidence is still there, but fragmentary, difficult to decipher. Opinions differ on what the rock is revealing. The details of this are interesting to some extent.
I image the rest of the book will be at the same detailed level and my interest just isn’t sustaining that deep dive at the moment. Perhaps I will attempt the book at another time, but for now I am leaving it here, partially read.
Want to Read
July 26, 2025The publisher has provided this nice except, on the discovery of Snowball Earth https://en.wikipedia.org/wiki/Snowbal...
Book excerpt: https://lithub.com/how-an-ancient-ice...
The first good evidence was found by a British geologist in Svalbard in 1938. WW2 intervened; he didn't publish his work until 1964. He had a hard time getting his ideas accepted.
A subject that's always interested me, since student days. I'm always a bit skeptical of science books written by journalists. From the evidence of this excerpt, I'll take a look at the book, when our libraries get a copy.
Book excerpt: https://lithub.com/how-an-ancient-ice...
The first good evidence was found by a British geologist in Svalbard in 1938. WW2 intervened; he didn't publish his work until 1964. He had a hard time getting his ideas accepted.
A subject that's always interested me, since student days. I'm always a bit skeptical of science books written by journalists. From the evidence of this excerpt, I'll take a look at the book, when our libraries get a copy.
January 31, 2026
Earth is so incredible. This book was very well written and accessible, part journalism, part memoir, part science. Parts did get a bit over my head, but the main message always pulsed through: change is the only constant and we can learn from how the earth changed and adapted in the past to help inform how we deal with the current climate crisis.
I think our biggest mistake as humans is having the ability to look back at those millions of millions of years of growth and change the Earth has experienced and think we are the pinnacle of it all. “There was nothing, there were cells, then dinosaurs, and now us!!” Earth will continue on for millions more and how egotistical of us to think it won’t continue to change and evolve - with or without us.
I think our biggest mistake as humans is having the ability to look back at those millions of millions of years of growth and change the Earth has experienced and think we are the pinnacle of it all. “There was nothing, there were cells, then dinosaurs, and now us!!” Earth will continue on for millions more and how egotistical of us to think it won’t continue to change and evolve - with or without us.
September 9, 2025
While the writing never quite rose to the level of Carson or McPhee for me, I enjoyed this well researched and heartfelt book about Earth’s deep history.
January 25, 2026
So well written! This book felt incredibly accessible even though I have literally zero background in biology, geology, or climate sciences. I appreciate that this book, despite talking about the past, consistently connects it to the present and makes this stuff important for the challenges our earth faces today.
October 28, 2025
Geology as Literature
A delightful and well researched story of the Earth. I loved the author's descriptions of her field trip experiences. The description of the Rise of Oxygen and of the 'Snowball Earth' theory was very interesting.
A delightful and well researched story of the Earth. I loved the author's descriptions of her field trip experiences. The description of the Rise of Oxygen and of the 'Snowball Earth' theory was very interesting.
September 7, 2025
Laura Poppick’s Strata traces key moments in Earth’s history across four sections—Air, Ice, Mud, and Heat—covering events like the Great Oxidation, “Snowball Earth,” the emergence of land ecosystems, and the dinosaur era.
Strata distinguishes itself through Poppick’s adept integration of geological science into narrative form. She skillfully combines scientific explanation with articulate storytelling, joining researchers in mines, outcrops, and polar environments. This approach offers a comprehensive and nuanced depiction of Earth’s ancient history. Poppick’s writing is clear and thorough, making complex science understandable without oversimplifying its evolving nature.
Strata also carries a quiet urgency. By examining how Earth has recovered from past upheavals, Poppick frames geology as a lens for understanding today’s climate challenges. Instead of simple solutions, she highlights that Earth endures, but our place on it remains vulnerable.
The book can be dense at times, particularly when discussing early atmospheric changes. However, Poppick’s vivid writing and detailed content make it worthwhile. Strata blends science writing with thoughtful reflection, inspiring awe for Earth's history and responsibility for its future.
Final Rating: 4.5 out of 5 — This well-crafted debut effectively brings the distant past to life and will be of particular interest to those who appreciate science, nature, and environmental literature.
Strata distinguishes itself through Poppick’s adept integration of geological science into narrative form. She skillfully combines scientific explanation with articulate storytelling, joining researchers in mines, outcrops, and polar environments. This approach offers a comprehensive and nuanced depiction of Earth’s ancient history. Poppick’s writing is clear and thorough, making complex science understandable without oversimplifying its evolving nature.
Strata also carries a quiet urgency. By examining how Earth has recovered from past upheavals, Poppick frames geology as a lens for understanding today’s climate challenges. Instead of simple solutions, she highlights that Earth endures, but our place on it remains vulnerable.
The book can be dense at times, particularly when discussing early atmospheric changes. However, Poppick’s vivid writing and detailed content make it worthwhile. Strata blends science writing with thoughtful reflection, inspiring awe for Earth's history and responsibility for its future.
Final Rating: 4.5 out of 5 — This well-crafted debut effectively brings the distant past to life and will be of particular interest to those who appreciate science, nature, and environmental literature.
January 16, 2026
This book encapsulated some important moments of earth’s history! When did O2 first appear on earth? What can previous global mass extinction events tell us about our current warming earth? What were the first known photosynthesizers? All of these questions are answered in our lovely rock record. Shout out to my professor quoted in this lovely piece of journalism too.
March 5, 2026
This book was beautiful. I’m so glad I read it.
I loved the organization into 4 parts: air, ice, mud and heat. Air discussing among other things the great oxidization event, ice discussing the snowball earth period, mud discussing the importance of the rise of mud for land animals, and heat discussing periods where huge amounts of magma came to the surface and also the great meteor, with observations like if it had hit a few minutes later, it might have landed in water and vaporized way less land, having much less of an effect, but how the way it hit paved the way for plants/animals/humans as we know them.
Many great on-site stories checking out strata and even dinosaur digs in different parts of the world like Australia, Ireland, Colorado, and many great personalities as the author talks with leaders in the fields.
It put things in perspective of how small a portion of the history of earth have had conditions that are anything near habitable for us, and of course how fragile those conditions are and how they could change.
Very good on audible too - narrator was great.
Ends so well too.
I loved the organization into 4 parts: air, ice, mud and heat. Air discussing among other things the great oxidization event, ice discussing the snowball earth period, mud discussing the importance of the rise of mud for land animals, and heat discussing periods where huge amounts of magma came to the surface and also the great meteor, with observations like if it had hit a few minutes later, it might have landed in water and vaporized way less land, having much less of an effect, but how the way it hit paved the way for plants/animals/humans as we know them.
Many great on-site stories checking out strata and even dinosaur digs in different parts of the world like Australia, Ireland, Colorado, and many great personalities as the author talks with leaders in the fields.
It put things in perspective of how small a portion of the history of earth have had conditions that are anything near habitable for us, and of course how fragile those conditions are and how they could change.
Very good on audible too - narrator was great.
Ends so well too.
July 27, 2025
Incredible book. What a wonderful summary of Earth’s history with snapshots of research and researchers, tied together with lovely prose.
“You breathe in and you breathe out. You remember how unlikely your life is, and yet here we are. In this moment, now.”
“You breathe in and you breathe out. You remember how unlikely your life is, and yet here we are. In this moment, now.”
January 2, 2026
Good first read for 2026! I love rocks and I love deep time and I love the carbon cycle <3
March 3, 2026
Beautiful book. The writing is superb and the artwork is arresting. A few prints I would love to have on a wall somewhere.
May 8, 2026
Turns out even a really well written and subjectively interesting books about rocks couldn’t make me interested in rocks. I tried….
January 17, 2026
I like science writing and try to get to a couple per year. This is well written, in that there are some nice turns of phrase and a blend of scientific information and storytelling, but the subject matter never grabbed me.
November 27, 2025
probably would’ve been closer to a 3.5 but stratigraphy is one of my Special Interests
December 25, 2025
Laura Poppick’s writing is lovely and notably lyrical for a science writer, but I’m afraid I both didn’t get enough actual science here and didn’t feel especially entertained by the presentation of it.
A lot of the problem here is that the book is billed as a Stratigraphy primer, and that isn’t at all what’s happening here. It’s very digestible for a non expert, but it also never touches on a lot of basic and intermediate stratigraphic concepts. The focus is mainly on two major stratigraphic events, which the author wanders to and fro between throughout the book in a manner that doesn’t make a lot of sense structurally.
Additionally, a lot of the book is built around a “Let’s drive around and interview experts in the field” format. While I’ve no doubt that these folks are good at their jobs, it seems they were not vetted for whether they are effective communicators of their expertise.
*I received an ARC of this book in exchange for an honest review.*
A lot of the problem here is that the book is billed as a Stratigraphy primer, and that isn’t at all what’s happening here. It’s very digestible for a non expert, but it also never touches on a lot of basic and intermediate stratigraphic concepts. The focus is mainly on two major stratigraphic events, which the author wanders to and fro between throughout the book in a manner that doesn’t make a lot of sense structurally.
Additionally, a lot of the book is built around a “Let’s drive around and interview experts in the field” format. While I’ve no doubt that these folks are good at their jobs, it seems they were not vetted for whether they are effective communicators of their expertise.
*I received an ARC of this book in exchange for an honest review.*
November 22, 2025
‘Strata are, in a certain way, love letters left behind by an aging Earth. They remind us where we came from. That we live our lives in a recycled world, and have created nothing from scratch. Even as the planet ages and grows sick, its stories persist as constant reminders that return us home. Reminders that we are the product of a system that has been humming for 4.54 billion years, and that we carry its beginnings in our bones.’
Do we find books, or do they find us? Both, I think. Our interests move in mysterious ways, and we often reach a particular point and wonder, ‘How did I get here?’ For Strata, the answer is easy. I have recently become interested in geology. The culprit? Thomas Halliday’s Otherlands: A World in the Making, which remains one of my favourite books ever. A review of Ruth Allen’s Weathering in The Marginalian—‘Rupture Precedes Revolution: Geologist Turned Psychoanalyst Ruth Allen on Boundaries and Limits as Frontiers of Transformation and Growth’—also piqued my interest, as it promised more fascinating geology complemented by marvellous writing. While browsing for Weathering online, I noticed Sandra Poppick’s Strata: Stories from Deep Time, then due to be published on 15 July 2025, and added it to my list for good measure.
Sandra Poppick is a geologist who turned to science journalism a decade ago. Her stories have appeared in The New York Times, Scientific American, Wired, Audubon, National Geographic, Science, and other publications. Her debut work, Strata, is about moments ‘frozen in time, whispering memories of a world without us’. She presents four global transformations that made life as we know it possible.
In Part I, Poppick writes: ‘Trying to get a handle on Earth’s oldest stories is like trying to contain a whipping flame. All but impossible. Strata from the very earliest eon, the Hadean, have all but melted back into the mantle. We’ll pass over these very earliest days and make our way into Earth’s second eon, the Archean. Spanning from 4 billion to 2.5 billion years ago, this marks the beginning of the rock record, and the beginnings of the air that we breathe.’
She explores the Great Oxygenation Event, which poisoned most existing anaerobic life on Earth; created the ozone layer that later allowed life to leave the oceans and colonise land; reacted with dissolved iron to form banded iron formations; and changed the atmosphere and climate so dramatically that it likely triggered one of Earth’s first Snowball Earth glaciations.
Part II concerns the deep freezes of Snowball Earth: ‘Within thousands of years after the planet first fell into a runaway cooling loop, the oceans grew a rind of ice so thick that it flowed like glaciers do on land. Underneath this global sea glacier, powerful submarine currents ribboned and rushed, propelled by heat emanating up out of vents in the seafloor. … Temperatures hovered below freezing everywhere, dipping below negative 20 degrees Celsius in the tropics.’
Part III is about the rise of mud on land. ‘If you reach out your arms and imagine Earth’s 4.54-billion-year history as a timeline that extends from the tips of your right hand to the tips of your left, we have now reached the area just before the heel of your left palm. The rise of mud on land,’ she explains. This section is rich with imagery: continents as armour, stripped and cracked by weather; boulders crumbling to cobbles, then to pebbles, sand, silt and clay; and finally plants transforming bare rock into refuge. ‘Out came the mud, out came the soft wriggle of life across land.’
In Part IV, Poppick turns to the reign of dinosaurs on a hothouse planet: ‘The Mesozoic offers a chance to witness the power of heat in the Earth system. … It is the physical manifestation of the carbon cycle … a powerful agent of change, driven by and driving the abundance of carbon dioxide in the air.’
I enjoyed the book overall, but it is when Poppick plunges into more literally prose that I enjoyed Strata the most: ‘Ironically, the strata that provide context for today’s warming are some of the very rocks that we have warmed our world with. About 70 percent of all modern oil deposits rest in Mesozoic rocks. They are the fossilized remains of marine plankton blooms that died, sank, and became buried within seafloor sediments that are now extracted and refined as fossil fuels. As we go about our lives and burn those seafloor deposits, we inhale bits of those ancient blooms. We pull them into our lungs and blood, incorporate them into our bones. We send them back into the atmosphere as we carry on combusting, returning the planet back to the conditions that those blooms once thrived within. Maybe this pleases the tiny ghosts of plankton past.’
Strata is not quite like Halliday’s Otherlands, which reads like an exploration narrative. It is instead a blend of travelogue and a glimpse into the lives of researchers who have devoted themselves to understanding deep time—the vast span that precedes humans. From a Minnesotan iron mine to a corner of the Australian Outback, Poppick ‘demonstrates that the planet’s oceans, continents, atmosphere, life and ice have always conspired to bring stability to Earth, even if we are only just beginning to understand how these different facets interact’ (https://laurapoppick.com/). Nor does Poppick remain in the past. She draws a connection to the ways our planet is changing today, under our influence—a version of Earth that is ‘burning, flooding, skittering off-kilter from our own undoings’.
It is fascinating to observe the planet through the eyes of geologists and to learn how they assemble narratives out of what to us, mere mortals, are either rocks or splendours of nature. By the end of the book you are humbled by the vast expanse of time that precedes us and by the ‘subtle transformations [that] build, erode, and rebuild the world anew’. I have enjoyed this book and will probably revisit it. It is beautifully written and accessible to everyone—from secondary schoolers and students to professional scientists.
Do we find books, or do they find us? Both, I think. Our interests move in mysterious ways, and we often reach a particular point and wonder, ‘How did I get here?’ For Strata, the answer is easy. I have recently become interested in geology. The culprit? Thomas Halliday’s Otherlands: A World in the Making, which remains one of my favourite books ever. A review of Ruth Allen’s Weathering in The Marginalian—‘Rupture Precedes Revolution: Geologist Turned Psychoanalyst Ruth Allen on Boundaries and Limits as Frontiers of Transformation and Growth’—also piqued my interest, as it promised more fascinating geology complemented by marvellous writing. While browsing for Weathering online, I noticed Sandra Poppick’s Strata: Stories from Deep Time, then due to be published on 15 July 2025, and added it to my list for good measure.
Sandra Poppick is a geologist who turned to science journalism a decade ago. Her stories have appeared in The New York Times, Scientific American, Wired, Audubon, National Geographic, Science, and other publications. Her debut work, Strata, is about moments ‘frozen in time, whispering memories of a world without us’. She presents four global transformations that made life as we know it possible.
In Part I, Poppick writes: ‘Trying to get a handle on Earth’s oldest stories is like trying to contain a whipping flame. All but impossible. Strata from the very earliest eon, the Hadean, have all but melted back into the mantle. We’ll pass over these very earliest days and make our way into Earth’s second eon, the Archean. Spanning from 4 billion to 2.5 billion years ago, this marks the beginning of the rock record, and the beginnings of the air that we breathe.’
She explores the Great Oxygenation Event, which poisoned most existing anaerobic life on Earth; created the ozone layer that later allowed life to leave the oceans and colonise land; reacted with dissolved iron to form banded iron formations; and changed the atmosphere and climate so dramatically that it likely triggered one of Earth’s first Snowball Earth glaciations.
Part II concerns the deep freezes of Snowball Earth: ‘Within thousands of years after the planet first fell into a runaway cooling loop, the oceans grew a rind of ice so thick that it flowed like glaciers do on land. Underneath this global sea glacier, powerful submarine currents ribboned and rushed, propelled by heat emanating up out of vents in the seafloor. … Temperatures hovered below freezing everywhere, dipping below negative 20 degrees Celsius in the tropics.’
Part III is about the rise of mud on land. ‘If you reach out your arms and imagine Earth’s 4.54-billion-year history as a timeline that extends from the tips of your right hand to the tips of your left, we have now reached the area just before the heel of your left palm. The rise of mud on land,’ she explains. This section is rich with imagery: continents as armour, stripped and cracked by weather; boulders crumbling to cobbles, then to pebbles, sand, silt and clay; and finally plants transforming bare rock into refuge. ‘Out came the mud, out came the soft wriggle of life across land.’
In Part IV, Poppick turns to the reign of dinosaurs on a hothouse planet: ‘The Mesozoic offers a chance to witness the power of heat in the Earth system. … It is the physical manifestation of the carbon cycle … a powerful agent of change, driven by and driving the abundance of carbon dioxide in the air.’
I enjoyed the book overall, but it is when Poppick plunges into more literally prose that I enjoyed Strata the most: ‘Ironically, the strata that provide context for today’s warming are some of the very rocks that we have warmed our world with. About 70 percent of all modern oil deposits rest in Mesozoic rocks. They are the fossilized remains of marine plankton blooms that died, sank, and became buried within seafloor sediments that are now extracted and refined as fossil fuels. As we go about our lives and burn those seafloor deposits, we inhale bits of those ancient blooms. We pull them into our lungs and blood, incorporate them into our bones. We send them back into the atmosphere as we carry on combusting, returning the planet back to the conditions that those blooms once thrived within. Maybe this pleases the tiny ghosts of plankton past.’
Strata is not quite like Halliday’s Otherlands, which reads like an exploration narrative. It is instead a blend of travelogue and a glimpse into the lives of researchers who have devoted themselves to understanding deep time—the vast span that precedes humans. From a Minnesotan iron mine to a corner of the Australian Outback, Poppick ‘demonstrates that the planet’s oceans, continents, atmosphere, life and ice have always conspired to bring stability to Earth, even if we are only just beginning to understand how these different facets interact’ (https://laurapoppick.com/). Nor does Poppick remain in the past. She draws a connection to the ways our planet is changing today, under our influence—a version of Earth that is ‘burning, flooding, skittering off-kilter from our own undoings’.
It is fascinating to observe the planet through the eyes of geologists and to learn how they assemble narratives out of what to us, mere mortals, are either rocks or splendours of nature. By the end of the book you are humbled by the vast expanse of time that precedes us and by the ‘subtle transformations [that] build, erode, and rebuild the world anew’. I have enjoyed this book and will probably revisit it. It is beautifully written and accessible to everyone—from secondary schoolers and students to professional scientists.
Read
February 12, 2026DNF. "...The waters have lapped calmly against sedimentary layers that ascend more than a thousand feet, capped by a plateau on top." Girl, "calmly" is implied in "lapped" and that is three different ways to say "on top." Which isn't a crime. But the whole book is like this!!!
August 22, 2025
Thank you to all responsible parties for the Goodreads giveaway. here's my honest opinion:
I entered this giveaway to learn something new, and I did. however, I thought the book was dry.
I entered this giveaway to learn something new, and I did. however, I thought the book was dry.
October 14, 2025
The author follows in the vein of John McPhee and Simon Winchester in describing our fascinating planet. I look forward to her future works.
January 20, 2026
This book is told in stories and digressions. By the time the digressions unwind, I lost the original thread. Good information, but I found it hard to maintain focus.
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