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Timefulness: How Thinking Like a Geologist Can Help Save the World

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Why an awareness of Earth's temporal rhythms is critical to our planetary survival

Few of us have any conception of the enormous timescales in our planet's long history, and this narrow perspective underlies many of the environmental problems we are creating for ourselves. The passage of nine days, which is how long a drop of water typically stays in Earth's atmosphere, is something we can easily grasp. But spans of hundreds of years--the time a molecule of carbon dioxide resides in the atmosphere--approach the limits of our comprehension. Our everyday lives are shaped by processes that vastly predate us, and our habits will in turn have consequences that will outlast us by generations. Timefulness reveals how knowing the rhythms of Earth's deep past and conceiving of time as a geologist does can give us the perspective we need for a more sustainable future.

Marcia Bjornerud shows how geologists chart the planet's past, explaining how we can determine the pace of solid Earth processes such as mountain building and erosion and comparing them with the more unstable rhythms of the oceans and atmosphere. These overlapping rates of change in the Earth system--some fast, some slow--demand a poly-temporal worldview, one that Bjornerud calls "timefulness." She explains why timefulness is vital in the Anthropocene, this human epoch of accelerating planetary change, and proposes sensible solutions for building a more time-literate society.

This compelling book presents a new way of thinking about our place in time, enabling us to make decisions on multigenerational timescales. The lifespan of Earth may seem unfathomable compared to the brevity of human existence, but this view of time denies our deep roots in Earth's history--and the magnitude of our effects on the planet.

224 pages, Hardcover

First published September 11, 2018

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Marcia Bjornerud

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Displaying 1 - 30 of 235 reviews
Profile Image for Tony.
1,011 reviews1,841 followers
June 20, 2019
I shrewdly avoided the more difficult science courses as I made my way through high school and college. And as far as I can tell I'm not the poorer for it, managing to get to a ripe old age without having used or needed to use organic chemistry, physics, or even algebra (knowingly) for that matter.

But now, late in life, I have found and devoured substantial books on Island Biogeography, Genetics, Cancer Research, and Behavioral Biology. Not to mention the hundred or so topics that John McPhee has chatted amiably about with me.

I think I've actually learned a lot, but that's beside the point. The reading has been exhilarating: challenging subjects made understandable and yet fun.

So this one looked like more fun, a book about geology and how it can save the world. And a host of positive to gushing reviews with a 4+ Goodreads star rating.

I don't think I could have been more disappointed.

First, the author seemed to go out of her way to not make herself understood by idiots like me. I read this out loud to a smarter person:

For the first 1.5 million years of the Pleistocene, the 41,000-year obliquity cycle is especially evident. Then, around 1.2 million years ago, the pulse slows to the calmer 100,000-year rhythm of the eccentricity cycle, like an electrocardiogram readout of a patient who is falling off to sleep. This is called the mid-Pleistocene transition, and its cause is not completely understood.

The smarter person, who can actually read an electrocardiogram, was nonplussed.

This is what I gleaned from the book. Geologists are the red-headed stepchildren in the faculty lounge. Chemists and Physicists are the rock stars. As a result, Geologists are underpaid. And also, this means that we are not prepared to handle the doom occasioned by Climate Change. Rocks tell the story, she says, although couching everything in Mights, Coulds and Maybes.

But I'm not a Climate denier. In fact, I felt I was kind of the choir waiting for her singing voice.

So, how to end Climate Change? There have to be scientific answers, don't there? Here's her bullet-point cure:

-- Recognize poverty and class-based disparity.

-- Pay public school teachers more.

-- Make Geology a capstone course.

I'm not kidding. (See page 174).

Oh. And we need spaces. Spaces are defined as choirs, community gardens, cooking schools, oral history projects, bird-watching groups, sturgeon fishing clubs . . .

The next time some asshole in a black pick-up truck with a Hemi tries to run you over in a 4-way stop, suggest he go bird-watching with you. That should lower the ocean levels.

Oh. Oh. We need to create a Secretary of the Future in American Government. Why? Because Kurt Effing Vonnegut suggested it in his last novel. I guess this means we need a Department of the Future, because you can't have a Secretary of the Future without having a Department of the Future. And if there's one thing that will stop Climate Change in its tracks it's more government.

But it's cute though. Just like Rachel Sussman's photographs of the oldest living things on Earth:



Or the conceptual artist On Kawara who created thousands of paintings which consist only of the date painted in white on a uniformly colored background.

Or John Cage's ongoing 639-year concert where every chord is sustained over a period of months.

Aaaaaaarrrggghhhh.
Profile Image for Veronica.
66 reviews83 followers
June 23, 2019
"Convinced that Nature is something outside us, a mute and immutable thing external to us, we are unable to empathize or communicate with it. But the Earth is speaking to us the all the time. In every stone, it offers an eternal truth or good rule of thumb; in every leaf, a prototype power station; in every ecosystem an exemplar of a healthy economy."



Loved, in part, because of echoing resonances with both Miyazaki and the distant calls of Pullman's far North, east of the sun and west of the moon (Østenfor sol og vestenfor måne), the seductive call of the void and a longing for the crystalline purity of ice. "Time, which had for so long left Svalbard in its Ice Age slumber, was returning with a vengeance."
Profile Image for Peter Tillman.
3,957 reviews462 followers
September 5, 2024
Final report:
My conclusion: good book, wrong reader. I had recently read a fine history of geology, so her historical material, for me, was, well, surplus to requirements. By the end I was skimming, and I didn't get much from her book beyond the personal anecdotes.

I'm tempted to leave this unrated, but I do these things in part so I can remember what I've read, or tried to read. So don't take my 3-star review too seriously. Worth a try if the book sounds interesting, and she writes well.

Interim report: I started reading this & it's promising, better than her previous pop-geology book. In particular, I liked her reminiscing about her Ph.D work at Svalbard circa 1984, and her surprise at returning to the same area in 2007. Lots of melt-off in the interim. The High Arctic has seen a lot of change in the current warming episode.

Unfortunately, I couldn't renew the book. I thought about going back to it. But: so many books, so little time.
======= Earlier stuff ==========
Now on hand, and queued up for an early 2019 read. Her first pop-sci book was pretty good, if memory serves. She is Professor of Geology and Environmental Studies at Lawrence University in Appleton, Wisc. Bjornerud’s research focuses on the physics of earthquakes and mountain-building, and she combines field-based studies of bedrock geology with quantitative models of rock mechanics. Bjornerud has done research in high arctic Norway (Svalbard) and Canada (Ellesmere Island), as well as mainland Norway, Scotland, New Zealand, and the Lake Superior region.

WSJ review, by geologist Robert M. Thorson https://www.wsj.com/articles/timefuln...
(paywalled)
"Geologists own time in the same way that geographers own space. From this insight Ms. Bjornerud forges a gem of an analogy that became my favorite takeaway from her book, if only because it showcases the subtitle, “How Thinking Like a Geologist Can Help Save the World.” She notes that although we’ve been repeatedly schooled about the perils of geographic illiteracy, we’ve not been schooled about the perils of temporal illiteracy: ignorance of the durations, rates and intrinsic timescales of earthly phenomena. “Like inexperienced but overconfident drivers,” she writes, “we accelerate into landscapes and ecosystems with no sense of their long-established traffic patterns, and then react with surprise and indignation when we face the penalties for ignoring natural laws. . . . We are navigating recklessly toward our future using conceptions of time as primitive as a world map from the fourteenth century, when dragons lurked around the edges of a flat earth.”
Profile Image for Ajeje Brazov.
908 reviews
October 4, 2021
Viviamo in un periodo frenetico, anzi pensiamo di vivere in un'epoca fatta di cambiamenti repentini, vogliamo sempre di più e più in fretta, senza contare che viviamo su un pianeta: la Terra, che ha avuto un'evoluzione lenta ed inesorabile. Abbiamo e stiamo continuando, a ritmi sempre più accelerati, consumando ciò che si è creato in milioni di anni, periodo che noi nemmeno immaginiamo. Esistiamo da poco più di 10.000 anni e pensiamo che la Terra stia morendo per i nostri egoismi, sconsideratezza e la non-empatia, ma la realtà delle cose è che sta morendo il nostro Ecosistema vivente, composto da noi esseri umani, ma anche da tutti gli altri esseri viventi: animali, vegetali ecc...
Questo saggio scandaglia la storia dell'ecologia, partendo da grandi scoperte del passato in fatto di conoscenze del pianeta, la sua vita, la sua durata e rapportandolo con il presente, dove la conoscenza si è fatta molto più sofisticata ed approfondita.
Allora perchè i maggiori indiziati del cambiamento climatico ed i conseguenti eventi catastrofici che stanno avvenendo sempre più frequentemente, sono gli ultimi anni di "gestione" della questione ambientale?
"La maggior parte degli studiosi di Scienze della Terra, conoscendo la lunga e complessa storia dell'atmosfera, biosfera e clima - le infernali estinzioni e le rigide ere glaciali, le fragili catene alimentari e i potenti meccanismi di feedback - pensano che l'idea che gli umani possano "gestire" il pianeta sia delirante e pericolosa. Cosa diavolo ci fa pensare di poter controllare la natura su scala globale, quando non abbiamo nemmeno imparato a controllare noi stessi?"

"Nel mondo, gli esseri umani oggi smuovono più rocce e sedimenti, sia intenzionalmente attraverso attività come l'estrazione mineraria, sia involontariamente accelerando l'erosione per mezzo dell'agricoltura e dell'urbanizzazione, di tutti i fiumi della Terra messi insieme."


Una lettura che consiglio vivamente, necessaria!
Profile Image for aPriL does feral sometimes .
2,124 reviews507 followers
June 22, 2021
'Timefulness' by Marcia Bjornerud is an excellent general review of how the work of geologist specialists of all kinds and from the observations of proto-scientists in earlier centuries to now, geologists have been able to determine the age of the Earth and its history. The book describes the history of the original formation of the Earth and its various atmospheric gas changes (well, at least from the eras after the Earth's first birthday of a few billion years old) to current times. By examining rocks, studying their composition and deterioration, and what has been trapped inside them, they have figured out what happened to the Earth during its lifetime. The book fills in those blanks regarding laboratory and mathematical processes that many general-reader science articles and TV shows skip over.

I copied the cover blurb below as it is accurate:

"Few of us have any conception of the enormous timescales in our planet's long history, and this narrow perspective underlies many of the environmental problems we are creating for ourselves. The passage of nine days, which is how long a drop of water typically stays in Earth's atmosphere, is something we can easily grasp. But spans of hundreds of years--the time a molecule of carbon dioxide resides in the atmosphere--approach the limits of our comprehension. Our everyday lives are shaped by processes that vastly predate us, and our habits will in turn have consequences that will outlast us by generations. Timefulness reveals how knowing the rhythms of Earth's deep past and conceiving of time as a geologist does can give us the perspective we need for a more sustainable future.

Marcia Bjornerud shows how geologists chart the planet's past, explaining how we can determine the pace of solid Earth processes such as mountain building and erosion and comparing them with the more unstable rhythms of the oceans and atmosphere. These overlapping rates of change in the Earth system--some fast, some slow--demand a poly-temporal worldview, one that Bjornerud calls "timefulness." She explains why timefulness is vital in the Anthropocene, this human epoch of accelerating planetary change, and proposes sensible solutions for building a more time-literate society.

This compelling book presents a new way of thinking about our place in time, enabling us to make decisions on multigenerational timescales. The lifespan of Earth may seem unfathomable compared to the brevity of human existence, but this view of time denies our deep roots in Earth's history--and the magnitude of our effects on the planet."


FYI: the end of the Earth will probably happen in about 1.5 billion years. The sun will kill it by expanding, so. We should start clearing up the pesky engineering problems preventing us from building those proposed generational ships.

The chapters are:

-A Call for Timefulness
-An Atlas of Time
-The Pace of the Earth
-Changes in the Air
-Great Accelerations
-Timefulness, Utopian and Scientific
-Epilogue


The pictures in this Wikipedia article are very helpful:

https://en.wikipedia.org/wiki/Geologi...


There are wonderfully informative appendixes in the back:

-Simplified Geologic Timescale
-Durations and Rates of Earth Phenomena
-Environmental Crises in Earth's History: Causes and Consequences


Plus, an extensive Notes and Index sections.


Religious people will file all of these facts under Fantasy fiction no matter what proofs are shown in this book and other science books. For most of the rest of us, it's confirmed and reproducible science from centuries of observations and hard exploratory work by thousands of scientists and students. For conservative but mostly sane Republicans, dictators, oligarchs and other capitalists, it's information filed under "who cares" unless the geologists have discovered a pocket of oil or a rare mineral.

The author Marcia Bjornerud is a professor of geology and environmental studies at Lawrence University.
Profile Image for Betsy.
619 reviews231 followers
July 17, 2021
[26 May 2021]
I really enjoyed this book, but then I've always been partial to the earth sciences. Plate tectonics, earthquakes, volcanoes. In some ways this book is an overview of the geologic history of the earth. Very general. It's also a paean to the study of geology. It's a pleasure to read something by a practicing scientist who really really likes what she does. But more than anything, it is a plea to humanity to be more aware of time, to stop living selfishly in the moment without considering the long term consequences of our actions. In fact she wants us to expand our sense of time to the eons reflected in geologic time. For our own good and the good of the earth.

"The great irony of the Anthropocene is that our outsized effects on the planet have in fact put Nature firmly back in charge, with a still-unpublished set of rules we will simply have to guess at."

Although this book could be considered a polemic, it's not overly didactic. It is very short and very well written. I think I would really enjoy taking a course taught by the author. And I recommend this book to everyone.
Profile Image for Leif.
1,912 reviews104 followers
February 17, 2020
Here's how this book went, in my mind: a geologist applied their particularly specialized reasoning to the many forms of climate change, biodiversity loss, and other environmental ills that put the world in the titular state - how a geologist might save the world!

Well, that ain't this book.

Instead, perhaps predictably, Timefulness is a lively but ultimately familiar story of the rise of geology as a discipline. Bjornerud gives the players and events plenty of attention and tells the story with verve, but it's not until the book kicks into gear around the 5th or 6th chapter that I began to get engaged, and where the promise of the book started to become clear. And then, too soon, it ends without really doing much justice to the central premise of geology's contribution to environmental action today. Like many excellent scientists, Bjornerud appears to fall into the camp that attributes many environmental woes to a deficit of scientific understanding, with the implicit logic that understanding the story of geology will, therefore, lead to beneficial outcomes. I am not convinced.

The difference between a geology textbook and philosophically-enriched policy advice is pretty clear, and I'm afraid that Timefulness veers too close to the former for my happiness. That said: if it's geological history you want, and if you'd like that history extended to a few policy speculations for today, this is the book for you!
Profile Image for MartaMP.
92 reviews27 followers
November 11, 2021
"Ma la Terra ci parla di continuo. In ogni pietra, ci offre una verità eterna o una regola generale; in ogni foglia, il prototipo di una centrale elettrica; in ogni ecosistema, un esempio di economia in salute."

Libro che si deve leggere con attenzione perché illustra concetti non subito digeribili.
Per me dovrebbero leggerlo tutti gli studenti che vogliono approcciarsi alle scienze geologiche, ambientali, biologiche e naturali perché presenta l'ambizioso percorso che queste discipline stanno percorrendo per renderci più consapevoli dell'immensa fortuna che abbiamo e che dovremmo lasciare in eredità ai nostri figli e nipoti.
L'autrice mostra straordinaria abilità nello spiegare concetti complessi, comprensibile da tutti.
Profile Image for Logan Judy.
Author 5 books26 followers
June 10, 2019
A very frustrating book that, despite well-told, fascinating geological information, expressed disdain of every sort for any who reach alternate conclusions. For an author that claims to aim at bringing "all factions to the table," she spends a disproportionate amount of time attacking religion, not only young Earth creationism but also scripture itself, calling Genesis "an insulting oversimplification." In the end, the presented information is little more than a veiled political treatise. Any who don't share her policy preference are treated as religious nuts with unshakeable faith in the free market, while her own dedication to a simplistic carbon tax solution is assumed rather than argued for. The book is mostly a rallying cry for her own supporters, with little but antagonism to offer those who, though disagreeing, would listen to her political conclusions.
Profile Image for Sam Dotson.
40 reviews5 followers
August 8, 2021
TL;DR
A good, brief, survey of the history and techniques of geology. I would not recommend this book.

Timefulness was fine. The book opens with the author reliving a childhood memory of a snow day, relating the feeling of missing school to a sense of being outside of time. I actually quite liked this portion. Such poetic writing is unique in the world of popular science. However, this style was not sustained and instead gave way to a defensive and insecure tone regarding geology's place among the other sciences. As a physicist that enjoys geology, the attack felt unwarranted.
I liked the historical development of geology as a field, although the author could have gone into more detail about some of the key characters. For example, Marie Tharp and her contributions to our modern understanding of plate tectonics were exceptionally brief.

The portion on carbon dating was clear, although there was at least one technical detail that the author got wrong. I needed to scratch the itch so the explanation is in a spoiler below.

Finally, if the thesis of the book is that "thinking like a geologist can help save the world" the support for it is thin. The author's discussion about "seven generations" and looking to our past for evidence of holistic living reminded me of a quote from Scott Campbell's Green Cities, Growing Cities, Just Cities :

Searching for our future in our indigenous past is instructive at both the philosophical and the practical level (Turner 1983; Duerr 1985). Yet it is also problematical, tapping into a myth that our salvation lies in the preindustrial sustainable culture. The international division of labor and trade, the movement of most people away from agriculture into cities, and exponential population growth lead us irrevocably down a unidirectional, not a circular path: the transformation of preindustrial, indigenous settlements into mass urban society is irreversible. Our modern path to sustainability lies forward, not behind us.

Do I think it would be helpful for society to take a longer view when making decisions? Yes. We tend to be devastatingly myopic. But the answers to these problems are not in the past, as Bjornerud suggests.

As a brief survey of the history and techniques in geology, the book does an okay job. The call to action was uninspiring. I hesitate to recommend it.

Profile Image for wildbriarose.
65 reviews1 follower
January 6, 2021
La Terra esiste da 4,5 miliardi di anni: un dato che noi diamo per scontato, perché ci è stato insegnato così. Ma quante guerre hanno dovuto combattere tra loro gli scienziati di tutti i campo per giungerea questo enorme numero, la cui grandezza lo rende difficile anche solo da immaginare?
La prima parte di questo saggio ci parla dell’autrice e della sua esperienza nelle Isole Svalbard: esperienza che l’ha formata e che poi, quando vi è tornata vent’anni dopo l’ha portata a scrivere.
Nella seconda parte, che insieme alla terza è quella che ho preferito, comincia la storia della geologia moderna, una spiegazione dell’uso degli isotopi per stabilire “l’età” delle rocce {cosa che in due esami universitari di geologia non avevo mai approfondito!}, dell’orogenesi (formazione delle catene montuose), degli archi insulari, dell’espansione dei fondali ad opera delle dorsali e della tettonica delle placche (quest’ultima particolarmente osteggiata dal panorama scientifico dell’epoca, un po’ come la teoria di Darwin.. un po’ come tutte le più grandi scoperte!). La quarta parte è stata per me la più tediosa, ma necessaria per arrivare al culmine del libro, la quinta parte, ovvero la climatologia, la sua storia e le previsioni per il futuro, con la geologia come chiave di lettura. Ciò vuol dire che studiando la storia della Terra possiamo fare previsioni di ciò che accadrà, che la Terra stessa si spiega, noi dobbiamo leggerla, e utilizzare il nostro innato ingegno per usufruire di ciò di cui dispone senza comprometterne il futuro. Le varie “soluzioni” che l’autrice propone, elencandone anche i difetti, sono insufficienti se prese singolarmente.. ma forse de impiegate tutte, insieme ad un lavoro di sensibilizzazione e di educazione ambientale non tutto è perduto, e quest’ultima parte della vita della Terra potremmo viverla lasciando la dignità al Pianeta che per tanti anni ci ha ospitati.

“Il tempo della Terra” è un saggio scientifico, pensato anche per chi di scienza non sa poi molto, ma sente il bisogno di conoscere la lunga storia della Terra, che prima di essere “nostra” ha passato eoni ricchi di evoluzioni che noi umani stiamo cominciando solo ora a conoscere.
Profile Image for gwayle.
668 reviews47 followers
January 14, 2021
Bjornerud sets out to widen our temporal perspective by educating us about the cycles and processes of the Earth. What follows is an elegant rendering of deep time, very satisfying and eye-opening for any curious mind. I despair that our species will never be able to comprehend—much less base policy on—anything beyond the last and next decade (and that's generous), but the idea of a time-literate and -sensitive society is so achingly lovely.
Profile Image for Rachel.
121 reviews
December 31, 2024
I found Timefulness to be an intriguing and wonderful read. The author, Marcia Bjornerud, is a professor of geology, and her in-depth knowledge and understanding of the subject matter really shone through. She showed a deep love and respect for the earth and its processes, and learning more about them.

The writing was beautiful and highly readable - it did not get bogged down in tiny details. Instead, it told a story about the earth that was interesting and comprehensible for someone with no background in geology but a general interest in learning.

I learned so much about the earth and time reading this book. Concepts such as millions and billions of years are gently explained - I felt like my hand was held as an excellent teacher walked me through them.

I found the subtitle, “How Thinking Like a Geologist Can Help Save the World”, a little offputting. I’m not sure if these words would be used by the author, though I can see the intention behind them. I think it could help a reader to be more committed to making the world a good place to live. We can look after our home, Earth, so humans can continue to live here safely and well into the future.

Learning more about how the earth’s processes and structures over time have worked together to form this inhabitable planet was truly enjoyable and edifying.
Profile Image for Irene.
1,264 reviews121 followers
September 15, 2022
Bad things happen to good ecosystems.


Out of all the natural sciences, geology is the one about which I know the least by far. Most of the books I've read that delve into the origins of the Earth are usually more focused on paleontology than geology. I've been trying to remedy this, and this book was a great one to pick up if you find yourself in a similar situation and are also interested in the Precambrian.

Bjornerud goes into detail about how geologists finally figured out how to date rocks, and I am forever impressed by the process. The ingenuity! The wild speculation that often lead nowhere! The resilience! All so that people who are afraid of their own mortality and insignificance can try to poke holes into the science with their strange creationist convictions, as if we didn't have enough problems already.

Grasping the concept of time at such a large scale is beyond difficult, but Bjornerud manages to paint a vivid timeline. The first time I was truly struck by the way time works was reading Rovelli's The Order of Time, in which he asks the reader to think about rocks as events rather than objects. A very relevant concept for reading this book.

What I don't think this book does as well is proposing any good ways of reversing or further preventing climate change. One of Bjornerud's proposals is adding geology to the curriculum on par with chemistry and physics instead of as an afterthought. I am very skeptical of the impact that would have. The vast majority of people don't fall in love with maths in high school, and they probably would be equally bored by geology, if it's taught in the same way. Science communication is wonderful and I wish passion for our environment could be taught to children in schools, but the way the education system works is not set up for that. Bill Nye the Science Guy and Beakman's World have done more to ensnare children's attentions and focus them towards science than schools ever have. Maybe that would be more effective.

She also falls short of proposing any novel ways of offsetting carbon emissions, or even criticising the current way we are being sold carbon offsetting, which is not only ineffective, but counterproductive (and many times, also a scam). She rightly points out that old growth forests are more effective at reducing carbon from the atmosphere than new growth, but planting conifers seems to be the #1 thing we have, as a species, decided is Doing Something™. Ocean acidification is also a big problem that planting trees does nothing to solve, and there are many people coming up with new ideas, from building artificial reefs, to using seaweed and oysters to remove pollutants from the water, but these are jobs that are far removed from geology.

In conclusion, this is a great book about long term timelines, but perhaps not the one that will save the planet on the short term.
Profile Image for Dana Sweeney.
250 reviews31 followers
February 25, 2020
When I started this book, I was hoping for & expecting something in the vein of a political, philosophical treatise: a book-length argument about our society’s time illiteracy, or temporal dysmorphia, and how that foundational, collective misunderstanding harms us and can be changed. This book was not quite that, but it was still very good.

The bulk of this book was, to me, akin to a sprint through an excellent Intro to Geology class in college. Part science history, part science itself, the book traces in exciting narrative form how the field of geology came to be and what its practitioners came to learn about our planet. The book is great for that content; it’s not really what I had hoped for, and it was largely (but not wholly!) redundant of things I had read and learned elsewhere. I probably should have done more homework ahead of time to determine that this book wasn’t really a match for what I want (which is models of thinking / living / understanding myself in more temporally expansive ways), but if you don’t know much about geology, highly recommended for that purpose. It’s a great primer.

The final chunk (maybe 20%) of the book was exactly what I was hoping for. I’m a bit disappointed that it wasn’t the central premise, but the quality of what I got was superb. Situating the climate crisis within everything covered about geologic history, Bjornerud argues that geology “points to a middle way between the sins of narcissistic pride in our importance and existential despair at our insignificance.” She offers the science of geology as a challenge to the pervasive philosophy of presentism, and offers us concrete ways to relate to other people and to nature in “polytemporal” ways. Without quite going all the way there, Bjornerud touches on the fact that capitalism has nothing to say or offer to us in the face of planetary destruction. She outlines how any pathways forward require not only new modes of economic and social life, but also new ways of storytelling: new ways of building community that make legible our connection to others who do not live at the same time as we do.

Four stars because the 20% of what I was actually looking for was phenomenally resonant, and will linger with me. (This book, toward the end, had me crying about rocks. It doesn’t take a lot for a book to make me cry but that’s still impressive.) Only docking a star because the rest of the content (while really good!) was not what I was looking for.
Profile Image for Jennifer.
129 reviews7 followers
dnf
September 14, 2022
DNF with 2 hours to go. This book has been on my list for a while so I decided to pick it up after finishing Otherlands by Thomas Halliday. Unfortunately, this did not work for me. I was listening to it on audio and I would not recommend the audio version - the narrator's voice was really robotic and I just could not follow along. Also, I would not say this is written at the lay reader level, though this could be my issues with the audio book spilling over. Also, the author really came out swinging in the intro against religion's view of a young Earth - I'm certainly not religious, but I still raised my eyebrows because I thought the placement of such sentiment would really alienate some readers. Though is it likely that those readers would pick this book up? I don't know. Anyway - not a successful book for me, sadly.
Profile Image for Iván Ferreira.
91 reviews1 follower
April 14, 2019
Un importante recordatorio de nuestra naturaleza efímera en el fluir del tiempo. Muy educativo y con una prosa además, muy entretenida. Excelente lectura para iniciar el estudio de la geología y una lección requerida para poner en perspectiva nuestro lugar y las consecuencias que dejamos sobre este planeta y sus ciclos.

"Los ríos que gobernaron rutas comerciales antiguas, fueron tallados por morrenas excavadas por grandes capas de hielo; las areniscas doradas que marcaron las costas de mares paleozoicos; los neises retorcidos que son las raíces remanentes de montañas proterozoicas. El ordovícico no es una tenue abstracción ¡Estuve ahí con mis estudiantes hace tan solo unos días!"
Profile Image for Tim Weed.
Author 4 books159 followers
February 7, 2019
A bracing journey through geologic time. The author begins by making the point that most humans alive today are time-illiterate. Our sense of the dimensions of the timescale of our own continually evolving planet is as flawed as the typical human's sense of geography was in the dark ages. This clearly written and efficiently narrated book has helped me address that specific shortcoming in my own worldview. I'm finding the new vantage point exhilarating, especially at this time of planetary environmental crisis. Highly recommended!
Profile Image for Dave.
81 reviews2 followers
November 11, 2018
Excellent review of deep time and basic geology.
Profile Image for Katie Keeshen.
183 reviews2 followers
February 11, 2025
3.5 - geology is wild and fascinating and I do love the way the author helped to reveal the history of the field and how we’ve come to know what we know about our planet.

I think the “save the world” part was a little thin! I agree that thinking about deep time and our place in the bigger picture is important but I don’t think the author offers much more than “we should think like this” in that section of the book.
5 reviews
May 19, 2025
Solid read but I do think I only enjoyed it as much as I did because I already have 6+ years of geoscience classes under my belt. Interesting way to think about the human impact on the Earth and to emphasize the damage that we are doing but also where there is/could be hope.
Profile Image for Nina.
55 reviews
November 23, 2020
4.5 stars. After spending much of this year reading up on various aspects of geology (mineralogy, volcanism, plate tectonics, etc. etc.), I figured it was time to take a step back and look at the larger picture. I enjoyed this book (though I lost the thread a few times) and found it to be well-written.
The author's tie-in between the vast time scales of geology and our future on Earth was at a different angle from the usual climate change arguments. I'm curious to see what geologists think of this book!
Profile Image for Emma Pettersen.
67 reviews22 followers
July 25, 2023
"As a species, we have a childelike disinterest and partial disbelif in the time before our appearance on Earth. With no appetite for stories lacking hauman protagonist, many people simply can't be bothered with natural history. We are thus both intemperate and intemporate- time illiterate. Like inexperienced but overconfident drivers, we accelarate into landscapes and ecosystems with no sens og their long-established traffic patterns, and then react with suprise and indignation when we face penalties for ignoring natural laws.
Profile Image for Theodore Kinni.
Author 11 books37 followers
September 24, 2018
Chances are good we've already destroyed ourselves by screwing with planet, but in case we haven't, the sun will snuff us out in a billion or so years. Best geology book I've read since McPhee's Annals of the Former World.
147 reviews4 followers
January 28, 2019
On January 29, 2018, I set myself a goal to read 50 books during the next 12 months. This last month I still had 18 books to read--and so several of them were picture books (but they certainly count!). I picked this one up partly because it was a short book for adults, and because I thought it might provoke some thoughtfulness on my part. It proved perfect. I learned a lot about geology, climate, time, change, equilibrium, rocks, chemistry, glaciers, fossils, and so much more. Well, actually, I probably "learned" just a fraction of all the fascinating science that is packed into this relatively short book of six chapters plus prologue and epilogue. My mind is not especially scientific—i.e. read: analytic—and my grasp of chemistry, physics, and the like is approximately nil. But still, I enjoyed this broad look into deep time, including the philosophical ramifications of It All.

This is popular science at its best. Bjornerud does a good job of contextualizing geology by bringing it home to place. And her facility with similes and analogies is spot-on. For example, in discussing the use of lead isotopes to arrive at the age of the Earth (4.5 billion years), she likens two radiogenic lead isotopes (derived from radioactive decay of uranium) to the cumulative earnings from two savings accounts, one with a high interest rate that allows rapid withdrawals to be made, the other with a lower interest rate that is drawn down more slowly; while a third, nonradiogenic isotope (that is, it starts out as lead) is like money hidden under a mattress. The earth itself she likens to a peach: the pit is the core, the flesh is the mantle, the skin is the crust, and the fuzz is the atmosphere. Works for me!

The chapters that I found most compelling were 2, "An Atlas of Time," where she covers the discoveries and thinking of foundational scientists such as Hutton, Lyell, and Darwin in the 18th and 19th centuries, up to big theories as mind-blowingly recent as the 1960s (plate tectonics and understanding of midoceanic ridges) and 1980s (the precise dating of the end of the Cretaceous period via the Mayan Peninsula's Chicxulub Crater)—even as we continue (eternally, no doubt) to revise our set of knowledge about this planet; and 6, "Timefulness: Utopian and Scientific," where she argues that humankind seriously needs a much more profound grasp of and appreciation for time both past and future, not just present, which is what economic models of value would ask us to focus on. As she puts it, "Stranded in the island of now, we are lonely." Not just lonely, but potentially headed down a treacherous path.

In chapter 6, Bjornerud references the works of various artists as a means of better appreciating time. One is a project by photographer Rachel Sussman, who traveled around the world taking formal portraits of living organisms older than 2,000 years: The Oldest Living Things in the World. "These Old Ones," Bjornerud writes," open our eyes to alternative relationships with time. They help us, vicariously, to see beyond the horizon of our own mortal limits."

Yes, my mind grasps art and philosophy better than science. But in fact, both are crucial to our fate on this planet, and to the fate of this planet. We need imagination and close observation; creative approaches that transcend fiscal cycles; appreciation of the vast complexity of this endlessly evolving miracle that we call home.

"For me," Bjornerud writes, "geology points to a middle way between the sins of narcissistic pride in our importance and existential despair at our insignificance. It affirms a teaching attributed to the eighteenth-century Polish Rabbi Simcha Bunim that we should all carry two slips of paper in our pockets: one that says 'I am ashes and dust,' and one that reads 'The world was made for me.' . . . If widely adopted, an attitude of timefulness could transform our relationships with nature, our fellow humans, and ourselves. Recognizing that our personal and cultural stories have always been embedded in larger, longer—and still elapsing—Earth stories might save us from environmental hubris. We might learn to place less value on novelty and disruption, and develop respect for durability and resilience. . . . Understanding how things have come to be the way they are, what has perished and what has persisted, makes it easier to recognize the differences between the ephemeral and the eternal. Growing old requires one to shed the illusion that there is only one version of the world."
637 reviews4 followers
February 1, 2020
This short, profound, mind-altering work is brilliant. Had it been read by 10% of the world's decision makers and serious influencers in 1990, we would probably not be in the Racing to Extinction Orgy we now find ourselves in ...Oh, but wait: it wasn't published until 2018. Oh, well. There's another verdant and generous planet just next door, right?
Scientific without being dry, the book manages to feel like a geology class in a 1960s college where the professor and students are all in "it" together, and the prospects are infinitely possible going forward. Using lots and lots of surprising similes -- the spreading of the Atlantic at the mid-Atlantic ridge is about the same as fingernail growth, while at the mid-Pacific ridge, it's ten times faster, more like the speed of hair growth [p68-69] -- the book makes geologic processes relatable. Our commonest model for geologic time -- the 24-hour clock wherein the whole of human history takes place in the last fraction of a second -- is "wrongheaded and even irresponsible" because it suggests "insignificance and disempowerment" allowing us to ignore our effects on the planet, while completely ignoring the pressing question: What happens after midnight? [p16]
The author, Marcia Bjornerud, speaks in a gentle but insistent voice, telling us that our relationship with Time is messed up, but that listening to the rocks can help straighten us out. Here's a long quote that sums up her thinking:
"As members of a technological society that can keep Nature at arm's length most of the time, we have an almost autistic relationship with the Earth. We are rigid in our ways, savants when it comes to certain narrow obsessions, but dysfunctional in other regards, because we wrongly view ourselves as separate from the rest of the natural world. Convinced that Nature is something outside us, a mute and immutable thing external to us, we are unable to empathize or communicate with it.
"But the Earth is speaking to us all the time. In every stone, it offers an eternal truth or good rule of thumb; in every leaf, a prototype power station; in every ecosystem, an exemplar of a healthy economy. In Aldo Leopold's words, we need to 'start thinking like a mountain,' awake to all the habits and inhabitants of this ancient, complicated, endlessly evolving planet." [p179]
I could write on and on; the comprehensive and humanistic roots of this book are so deep and delightful -- one word: Ygdrassil -- that it would be a great read even if it wasn't about the end of macrofauna as we know it. Thank you for this wonderful book, Marcia.
PS: the appendices are brilliant; the list of extinctions, or what Marcia calls "Environmental Crises in Earth's History: Causes and Consequences" is by itself illuminating and worth the price of the book. On the other hand, the index is useless: six pages of tiny type, but when I tried to look up six bits I wanted to refer to, I struck out five times. (Ygdrassil was in.) Indexers: mightn't it be useful to read and understand the book before indexing it?
Profile Image for Helen.
262 reviews2 followers
June 17, 2021
Based on the title, I was expecting a slightly more anthropological take, but the majority of this felt like a fast-tracked intro to geology course. Only the last 2 chapters really get into the ways in which we interact with the world and the steps we might take to change on our course of eventual destruction.

Unfortunately though, Bjornerud is not nearly as strong as a policy analyst as she is a geology professor. The suggestions were nice enough, but sort of lackluster and not bearing much in the way of supporting research. She also takes a pretty negative perspective on the net effect of human existence on Earth, simplifying humanity to CEOs and economists solely focused on profit-maximization (I get it, believe me, but RUDE. #notalleconomists?) and everyday people obsessed with our phones.

I think if this had been marketed as more of a primer on the history of geology, then the final suggestions wouldn’t have been as disappointing. Not a bad book, just a case of mismatched expectations.
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