Vaclav Smil is my favorite author.--Bill Gates

An indispensable analysis of how the world really produces and consumes its food--and a scientist's exploration of how we can successfully feed a growing population without killing the planet

We have never had to feed as many people as we do today. And yet, we misunderstand the essentials of where our food really comes from, how our dietary requirements shape us, and why this impacts our planet in drastic ways. As a result, in our economic, political, and everyday choices, we take for granted and fail to prioritize the thing that makes all our lives possible: food.

In this ambitious, myth-busting book, Smil investigates many of the burning questions facing the world today: why are some of the world's biggest food producers also the countries with the most undernourished populations? Why do we waste so much food and how can we solve that? Could the whole planet go vegan and be healthy? Should it? He explores the global history of food production to understand why we farm some animals and not others, why most of the world's calories come from just a few foodstuffs, and how this might change in the future.

How to Feed the World is the data-based, rigorously researched guide that offers solutions to our broken global food system.

INSTANT NEW YORK TIMES BESTSELLER

A new masterpiece from one of my favorite authors... [How The World Really Works] is a compelling and highly readable book that leaves readers with the fundamental grounding needed to help solve the world's toughest challenges.--Bill Gates

Provocative but perceptive . . . You can agree or disagree with Smil--accept or doubt his 'just the facts' posture--but you probably shouldn't ignore him.--The Washington Post

An essential analysis of the modern science and technology that makes our twenty-first century lives possible--a scientist's investigation into what science really does, and does not, accomplish.

We have never had so much information at our fingertips and yet most of us don't know how the world really works. This book explains seven of the most fundamental realities governing our survival and prosperity. From energy and food production, through our material world and its globalization, to risks, our environment and its future, How the World Really Works offers a much-needed reality check--because before we can tackle problems effectively, we must understand the facts.

In this ambitious and thought-provoking book we see, for example, that globalization isn't inevitable--the foolishness of allowing 70 per cent of the world's rubber gloves to be made in just one factory became glaringly obvious in 2020--and that our societies have been steadily increasing their dependence on fossil fuels, such that any promises of decarbonization by 2050 are a fairy tale. For example, each greenhouse-grown supermarket-bought tomato has the equivalent of five tablespoons of diesel embedded in its production, and we have no way of producing steel, cement or plastics at required scales without huge carbon emissions.

Ultimately, Smil answers the most profound question of our age: are we irrevocably doomed or is a brighter utopia ahead? Compelling, data-rich and revisionist, this wonderfully broad, interdisciplinary guide finds faults with both extremes. Looking at the world through this quantitative lens reveals hidden truths that change the way we see our past, present and uncertain future.

INSTANT NEW YORK TIMES BESTSELLER

A new masterpiece from one of my favorite authors... [How The World Really Works] is a compelling and highly readable book that leaves readers with the fundamental grounding needed to help solve the world's toughest challenges.--Bill Gates

Provocative but perceptive . . . You can agree or disagree with Smil--accept or doubt his 'just the facts' posture--but you probably shouldn't ignore him.--The Washington Post

An essential analysis of the modern science and technology that makes our twenty-first century lives possible--a scientist's investigation into what science really does, and does not, accomplish.

We have never had so much information at our fingertips and yet most of us don't know how the world really works. This book explains seven of the most fundamental realities governing our survival and prosperity. From energy and food production, through our material world and its globalization, to risks, our environment and its future, How the World Really Works offers a much-needed reality check--because before we can tackle problems effectively, we must understand the facts.

In this ambitious and thought-provoking book we see, for example, that globalization isn't inevitable--the foolishness of allowing 70 per cent of the world's rubber gloves to be made in just one factory became glaringly obvious in 2020--and that our societies have been steadily increasing their dependence on fossil fuels, such that any promises of decarbonization by 2050 are a fairy tale. For example, each greenhouse-grown supermarket-bought tomato has the equivalent of five tablespoons of diesel embedded in its production, and we have no way of producing steel, cement or plastics at required scales without huge carbon emissions.

Ultimately, Smil answers the most profound question of our age: are we irrevocably doomed or is a brighter utopia ahead? Compelling, data-rich and revisionist, this wonderfully broad, interdisciplinary guide finds faults with both extremes. Looking at the world through this quantitative lens reveals hidden truths that change the way we see our past, present and uncertain future.

A comprehensive account of how energy has shaped society throughout history, from pre-agricultural foraging societies through today's fossil fuel-driven civilization.

I wait for new Smil books the way some people wait for the next 'Star Wars' movie. In his latest book, Energy and Civilization: A History, he goes deep and broad to explain how innovations in humans' ability to turn energy into heat, light, and motion have been a driving force behind our cultural and economic progress over the past 10,000 years.
--Bill Gates, Gates Notes, Best Books of the Year

Energy is the only universal currency; it is necessary for getting anything done. The conversion of energy on Earth ranges from terra-forming forces of plate tectonics to cumulative erosive effects of raindrops. Life on Earth depends on the photosynthetic conversion of solar energy into plant biomass. Humans have come to rely on many more energy flows--ranging from fossil fuels to photovoltaic generation of electricity--for their civilized existence. In this monumental history, Vaclav Smil provides a comprehensive account of how energy has shaped society, from pre-agricultural foraging societies through today's fossil fuel-driven civilization.

Humans are the only species that can systematically harness energies outside their bodies, using the power of their intellect and an enormous variety of artifacts--from the simplest tools to internal combustion engines and nuclear reactors. The epochal transition to fossil fuels affected everything: agriculture, industry, transportation, weapons, communication, economics, urbanization, quality of life, politics, and the environment. Smil describes humanity's energy eras in panoramic and interdisciplinary fashion, offering readers a magisterial overview. This book is an extensively updated and expanded version of Smil's Energy in World History (1994). Smil has incorporated an enormous amount of new material, reflecting the dramatic developments in energy studies over the last two decades and his own research over that time.

Vaclav Smil is my favorite author... Numbers Don't Lie takes everything that makes his writing great and boils it down into an easy-to-read format. I unabashedly recommend this book to anyone who loves learning.--Bill Gates, GatesNotes

From the author of How the World Really Works, an essential guide to understanding how numbers reveal the true state of our world--exploring a wide range of topics including energy, the environment, technology, transportation, and food production.

Vaclav Smil's mission is to make facts matter. An environmental scientist, policy analyst, and a hugely prolific author, he is Bill Gates' go-to guy for making sense of our world. In Numbers Don't Lie, Smil answers questions such as: What's worse for the environment--your car or your phone? How much do the world's cows weigh (and what does it matter)? And what makes people happy?

From data about our societies and populations, through measures of the fuels and foods that energize them, to the impact of transportation and inventions of our modern world--and how all of this affects the planet itself--in Numbers Don't Lie, Vaclav Smil takes us on a fact-finding adventure, using surprising statistics and illuminating graphs to challenge conventional thinking. Packed with fascinating information and memorable examples, Numbers Don't Lie reveals how the US is leading a rising worldwide trend in chicken consumption, that vaccination yields the best return on investment, and why electric cars aren't as great as we think (yet). Urgent and essential, with a mix of science, history, and wit--all in bite-sized chapters on a broad range of topics--Numbers Don't Lie inspires readers to interrogate what they take to be true.

From one of the world's leading experts on the history of energy, a rigorous examination of the transitions that structure our modern world--and the environmental reckoning that will mark its success or failure.

What makes the modern world work? The answer to this deceptively simple question lies in four grand transitions of civilization--in populations, agriculture, energy, and economics--which have transformed the way we live.

Societies that have undergone all four transitions emerge into an era of radically different population dynamics, food surpluses (and waste), abundant energy use, and expanding economic opportunities. Simultaneously, in other parts of the world, hundreds of millions remain largely untouched by these developments.

Through erudite storytelling, Vaclav Smil investigates the fascinating and complex interactions of these transitions. He argues that the moral imperative to share modernity's benefits has become more acute with increasing economic inequality, but addressing this imbalance would make it exceedingly difficult to implement the changes necessary for the long-term preservation of the environment. Thus, managing the fifth transition--environmental changes from natural-resource depletion, biodiversity loss, and global warming--will determine the success or eventual failure of the grand transitions that have made the world we live in today.

There are many misconceptions about the future of global energy often presented as fact by the media, politicians, business leaders, activists, and even scientists--wasting time and money and hampering the development of progressive energy policies. Energy Myths and Realities: Bringing Science to the Energy Policy Debate debunks the most common fallacies to make way for a constructive, scientific approach to the global energy challenge. When will the world run out of oil? Should nuclear energy be adopted on a larger scale? Are ethanol and wind power viable sources of energy for the future? Vaclav Smil advises the public to be wary of exaggerated claims and impossible promises. The global energy transition will be prolonged and expensive--and hinges on the development of an extensive new infrastructure. Established technologies and traditional energy sources are persistent and adaptable enough to see the world through that transition. Energy Myths and Realities brings a scientific perspective to an issue often dominated by groundless assertions, unfounded claims, and uncritical thinking. Before we can create sound energy policies for the future, we must renounce the popular myths that cloud our judgment and impede true progress.

From one of the world's leading experts on the history of energy, a rigorous examination of the transitions that structure our modern world--and the environmental reckoning that will mark its success or failure.

What makes the modern world work? The answer to this deceptively simple question lies in four grand transitions of civilization--in populations, agriculture, energy, and economics--which have transformed the way we live.

Societies that have undergone all four transitions emerge into an era of radically different population dynamics, food surpluses (and waste), abundant energy use, and expanding economic opportunities. Simultaneously, in other parts of the world, hundreds of millions remain largely untouched by these developments.

Through erudite storytelling, Vaclav Smil investigates the fascinating and complex interactions of these transitions. He argues that the moral imperative to share modernity's benefits has become more acute with increasing economic inequality, but addressing this imbalance would make it exceedingly difficult to implement the changes necessary for the long-term preservation of the environment. Thus, managing the fifth transition--environmental changes from natural-resource depletion, biodiversity loss, and global warming--will determine the success or eventual failure of the grand transitions that have made the world we live in today.

La demostración de que el tamaño importa.

Pueden las medidas explicar el mundo? Para responder a esa colosal pregunta ha dedicado Vaclav Smil las más de trescientas páginas de El tamaño de las cosas. El científico canadiense despliega un ambicioso análisis del principio rector más fundamental de nuestro planeta: el tamaño, cuyas leyes, límites y peculiaridades son clave para entender la salud, la riqueza e incluso la felicidad. Medir la escala, las proporciones y las simetrías es todo un reto, en especial cuando se trata de sistemas tan complejos como las economías, pero comprenderlas ofrece ricas recompensas.

Con el enfoque interdisciplinar que caracteriza su prolífica obra divulgativa, Smil recurre a la historia, las ciencias de la Tierra, la psicología y el arte, entre otras áreas, para ofrecer una nueva visión de nuestros mayores retos, como la desigualdad, la propagación de enfermedades infecciosas y los estragos del cambio climático.

Este libro sobre lo grande, lo pequeño y la relación entre ambos nos entrega una innovadora respuesta a las grandes preguntas sobre la existencia humana. El tamaño no es solo una propiedad más de lo que nos rodea, sino que puede cambiar nuestra forma de verlo absolutamente todo.

ENGLISH DESCRIPTION

From the New York Times bestselling author of How the World Really Works, a wide-ranging look at the most fundamental governing principle of our world: size, whose laws, limits, and peculiarities offer the key to understanding health, wealth, and even happiness

No one writes about the great issues of our time with more rigor or erudition than Vaclav Smil. -- Elizabeth Kolbert

To answer the most important questions of our age, we must understand size. Neither bacteria nor empires are immune to its laws. Measuring it is challenging, especially where complex systems like economies are concerned, yet mastering it offers rich rewards: the rise of the West, for example, was a direct result of ever more accurate and standardized measurements.

Using the interdisciplinary approach that has won him a wide readership, Smil draws upon history, earth science, psychology, art, and more to offer fresh insight into some of our biggest challenges, including income inequality, the spread of infectious disease, and the uneven impacts of climate change. Size explains the regularities--and peculiarities--of the key processes shaping life (from microbes to whales), the Earth (from asteroids to volcanic eruptions), technical advances (from architecture to transportation), and societies and economies (from cities to wages). This book about the big and the small, and the relationship between them, answers the big and small questions of human existence:

- What makes a human society too big? What about a human being?
- Which alternative energy sources have the best chance of scaling and reducing our dependence on fossil fuels?
- Why do tall people make more money?
- What makes a face beautiful? How about a cathedral?
- How can changing the size of your plates help you lose weight?

The latest masterwork of an ambitious and astonishing polymath who swings for fences (Wired) Size is a mind-bending journey that turns the modern world on its head.

Natural gas is the world's cleanest fossil fuel; it generates less air pollution and releases less CO2 per unit of useful energy than liquid fuels or coals. With its vast supplies of conventional resources and nonconventional stores, the extension of long-distance gas pipelines and the recent expansion of liquefied natural gas trade, a truly global market has been created for this clean fuel.

Natural Gas: Fuel for the 21st Century discusses the place and prospects of natural gas in modern high-energy societies. Vaclav Smil presents a systematic survey of the qualities, origins, extraction, processing and transportation of natural gas, followed by a detailed appraisal of its many preferred, traditional and potential uses, and the recent emergence of the fuel as a globally traded commodity. The unfolding diversification of sources, particularly hydraulic fracturing, and the role of natural gas in national and global energy transitions are described. The book concludes with a discussion on the advantages, risks, benefits and costs of natural gas as a leading, if not dominant, fuel of the 21st century.

This interdisciplinary text will be of interest to a wide readership concerned with global energy affairs including professionals and academics in energy and environmental science, policy makers, consultants and advisors with an interest in the rapidly-changing global energy industry.

This bold and controversial argument shows why energy transitions are inherently complex and prolonged affairs, and how ignoring this fact raises unrealistic expectations that the United States and other global economies can be weaned quickly from a primary dependency on fossil fuels.

Energy transitions are fundamental processes behind the evolution of human societies: they both drive and are driven by technical, economic, and social changes. In a bold and provocative argument, Energy Transitions: History, Requirements, Prospects describes the history of modern society's dependence on fossil fuels and the prospects for the transition to a nonfossil world. Vaclav Smil, who has published more on various aspects of energy than any working scientist, makes it clear that this transition will not be accomplished easily, and that it cannot be accomplished within the timetables established by the Obama administration.

The book begins with a survey of the basic properties of modern energy systems. It then offers detailed explanations of universal patterns of energy transitions, the peculiarities of changing energy use in the world's leading economies, and the coming shifts from fossil fuels to renewable conversions. Specific cases of these transitions are analyzed for eight of the world's leading energy consumers. The author closes with perspectives on the nature and pace of the coming energy transition to renewable conversions.

Dr. Smil is the world's authority on nitrogenous fertilizer.

The industrial synthesis of ammonia from nitrogen and hydrogen has been of greater fundamental importance to the modern world than the invention of the airplane, nuclear energy, space flight, or television. The expansion of the world's population from 1.6 billion people in 1900 to today's six billion would not have been possible without the synthesis of ammonia.

In Enriching the Earth, Vaclav Smil begins with a discussion of nitrogen's unique status in the biosphere, its role in crop production, and traditional means of supplying the nutrient. He then looks at various attempts to expand natural nitrogen flows through mineral and synthetic fertilizers. The core of the book is a detailed narrative of the discovery of ammonia synthesis by Fritz Haber--a discovery scientists had sought for over one hundred years--and its commercialization by Carl Bosch and the chemical company BASF. Smil also examines the emergence of the large-scale nitrogen fertilizer industry and analyzes the extent of global dependence on the Haber-Bosch process and its biospheric consequences. Finally, it looks at the role of nitrogen in civilization and, in a sad coda, describes the lives of Fritz Haber and Carl Bosch after the discovery of ammonia synthesis.

Meat eating is often a contentious subject, whether considering the technical, ethical, environmental, political, or health-related aspects of production and consumption.

This book is a wide-ranging and interdisciplinary examination and critique of meat consumption by humans, throughout their evolution and around the world. Setting the scene with a chapter on meat's role in human evolution and its growing influence during the development of agricultural practices, the book goes on to examine modern production systems, their efficiencies, outputs, and impacts. The major global trends of meat consumption are described in order to find out what part its consumption plays in changing modern diets in countries around the world. The heart of the book addresses the consequences of the massive carnivory of western diets, looking at the inefficiencies of production and at the huge impacts on land, water, and the atmosphere. Health impacts are also covered, both positive and negative. In conclusion, the author looks forward at his vision of rational meat eating, where environmental and health impacts are reduced, animals are treated more humanely, and alternative sources of protein make a higher contribution.

Should We Eat Meat? is not an ideological tract for or against carnivorousness but rather a careful evaluation of meat's roles in human diets and the environmental and health consequences of its production and consumption. It will be of interest to a wide readership including professionals and academics in food and agricultural production, human health and nutrition, environmental science, and regulatory and policy making bodies around the world.

Un sincero y revelador análisis de las posibilidades energéticas de nuestro futuro.
«Si te preocupa el futuro y te enfurece que no se esté haciendo suficiente al respecto, por favor, lee este libro .
Paul Collier

Vaclav Smil lleva cincuenta años estudiando las posibilidades que tenemos a nuestro alcance para garantizar el futuro energético de nuestro planeta. Debido a la complejidad de las interacciones que mueven el mundo, la atomización del conocimiento y la volatilidad de la información es muy difícil anticipar con exactitud qué ocurrirá. Por eso es necesario ceñirse a los datos y a los límites que nos ofrece la ciencia, así como poner la atención en los escenarios más cercanos y menos idealistas para encarar los retos actuales de manera eficaz.

Así pues, este libro aborda temas tan importantes como la improbable y difícil tarea de descarbonizar el planeta, en parte por la estrecha relación entre la producción de alimentos y los combustibles fósiles, pero también destapa realidades incómodas, como la dependencia de las economías modernas respecto de la alta producción de amoníaco, metal, cemento y plástico. Además, examina de qué forma el calentamiento global puede afectar a nuestras necesidades básicas para sobrevivir y anima a reevaluar los riesgos que hemos subestimado o exagerado a lo largo de los años para aprender a vivir más y mejor.

Cómo funciona el mundo es literalmente un libro sobre cómo funciona el mundo. Por su estructura y clarividencia, sirve como una guía interdisciplinaria que evita a toda costa dar eco a las posturas extremas y propone una respuesta objetiva, científica y razonada a todos los titulares que nos generan ansiedad: la crisis climática, la crisis energética, la crisis de materias primas, la globalización y el futuro de nuestra civilización. El resultado es un poderoso ensayo que combina los más recientes descubrimientos científicos y el trabajo de quien ha investigado a lo largo de medio siglo los retos energéticos a los que nos enfrentamos.

ENGLISH DESCRIPTION

A new masterpiece from one of my favorite authors... [How The World Really Works] is a compelling and highly readable book that leaves readers with the fundamental grounding needed to help solve the world's toughest challenges.--Bill Gates

Provocative but perceptive . . . You can agree or disagree with Smil--accept or doubt his 'just the facts' posture--but you probably shouldn't ignore him.--The Washington Post

An essential analysis of the modern science and technology that makes our twenty-first century lives possible--a scientist's investigation into what science really does, and does not, accomplish.

We have never had so much information at our fingertips and yet most of us don't know how the world really works. This book explains seven of the most fundamental realities governing our survival and prosperity. From energy and food production, through our material world and its globalization, to risks, our environment and its future, How the World Really Works offers a much-needed reality check--because before we can tackle problems effectively, we must understand the facts.

In this ambitious and thought-provoking book we see, for example, that globalization isn't inevitable--the foolishness of allowing 70 per cent of the world's rubber gloves to be made in just one factory became glaringly obvious in 2020--and that our societies have been steadily increasing their dependence on fossil fuels, such that any promises of decarbonization by 2050 are a fairy tale. For example, each greenhouse-grown supermarket-bought tomato has the equivalent of five tablespoons of diesel embedded in its production, and we have no way of producing steel, cement or plastics at required scales without huge carbon emissions.

Ultimately, Smil answers the most profound question of our age: are we irrevocably doomed or is a brighter utopia ahead? Compelling, data-rich and revisionist, this wonderfully broad, interdisciplinary guide finds faults with both extremes. Looking at the world through this quantitative lens reveals hidden truths that change the way we see our past, present and uncertain future.

Der weltbekannte Wissenschaftler Vaclav Smil analysiert das kritische Thema der nachhaltigen Ressourcennutzung, das für Forschung und Politik von gro em Interesse ist

Im Laufe der Zeit ist die moderne Welt von Materialströmen in ungeahntem Ausma abhängig geworden. Selbst die effizientesten Produktionsverfahren und ein grö tmöglicher Recyclinganteil reichen möglicherweise nicht aus, um die Dematerialisierung so weit voranzutreiben, dass sie die zunehmende Nachfrage nach Materialien ausgleichen könnte, die aus dem anhaltenden Bevölkerungswachstum und steigenden Lebensstandards entsteht.

In Materials and Dematerialization werden die wichtigsten Materialien der Geschichte betrachtet, von Holz und Stein über Metalle und Legierungen bis zu Kunststoffen und Silizium, mit einer Beschreibung ihrer Gewinnung bzw. Herstellung und der wichtigsten Anwendungen. In einer detaillierten Analyse werden die steigende Produktivität bei der Gewinnung und Verarbeitung, Synthese, Veredelung und Verteilung von Materialien sowie die Energiekosten und die Umweltauswirkungen des zunehmenden Materialverbrauchs untersucht. Gleichzeitig wird die Beziehung zwischen sozioökonomischer Entwicklung und Ressourcennutzung insbesondere in Bezug auf die wichtigsten Technologien und Innovationen betrachtet. Das Buch endet mit einem Ausblick auf die Zukunft. Erörtert werden dabei die Möglichkeiten der Dematerialisierung, eine mögliche Beschränkung von Materialien und eine aktualisierte Einschätzung des Materialbedarfs sowie die Prognosen für die nächsten Jahrzehnte.

Nach dem gro en Erfolg seiner Veröffentlichung von 2013 hat Vaclav Smil sein wegweisendes Werk nun gründlich überarbeitet. In der neuen Ausgabe werden die Fortschritte der letzten zehn Jahren herausgestellt, und auch die Statistiken und Literaturhinweise wurden auf den Stand von 2022 gebracht. Zudem enthält die aktualisierte Ausgabe neue Inhalte, die sich ausdrücklich damit befassen, welche Materialien für die globale Energiewende und die Lebensmittelsicherheit einer weiterhin wachsenden Weltbevölkerung erforderlich sind.

Creating and Transforming the Twentieth Century combines two of Vaclav Smil's seminal works in a revised and expanded edition. Creating the Twentieth Century explores the period between 1867 and 1914, a time of unparalleled innovation that laid the groundwork for modern civilization. It investigates the birth of an expansive society driven by the synergy of fuels, science, and technical innovation. Key inventions from this era include dynamite, the telephone, photographic film, and the first light bulbs in the 1870s, followed by electricity-generating plants, electric motors, steam turbines, and cars in the 1880s. The period of extraordinary discovery continues into the early 20th century with the advent of airplanes, tractors, radio signals, and plastics. Smil systematically examines four fundamental classes of innovations: the formation and standardization of electric systems, the rapid adoption of internal combustion engines, the surge in chemical syntheses and material substitutions, and the dawn of the information age. This interdisciplinary account highlights the epochal consequences of these advancements, leading to high-energy societies engaged in mass production aimed at improving living standards.

Transforming the Twentieth Century investigates how these technical advances shaped the decades that followed. It examines how the 20th century differed from the preceding 100 years due to unprecedented combinations of technical progress. Smil discusses the remarkable pace and ambition of 20th-century advancements, which elevated industrial production to new heights and tackled previously insurmountable challenges. He addresses the themes of electricity, engines, materials, and information techniques, and critically examines the contradictory consequences of technological progress--including liberating simplicity versus overwhelming complexity, unprecedented affluence versus economic disparities, and increased security versus new fears.

This new edition contains numerous updates to the original books and features a new preface and a final chapter examining key themes in light of major 21st-century events and publications. Now in a single volume, these classic texts remain central to Smil's acclaimed oeuvre, and their lessons are perennially fascinating.

A systematic investigation of growth in nature and society, from tiny organisms to the trajectories of empires and civilizations.

Growth has been both an unspoken and an explicit aim of our individual and collective striving. It governs the lives of microorganisms and galaxies; it shapes the capabilities of our extraordinarily large brains and the fortunes of our economies. Growth is manifested in annual increments of continental crust, a rising gross domestic product, a child's growth chart, the spread of cancerous cells. In this magisterial book, Vaclav Smil offers systematic investigation of growth in nature and society, from tiny organisms to the trajectories of empires and civilizations.

Smil takes readers from bacterial invasions through animal metabolisms to megacities and the global economy. He begins with organisms whose mature sizes range from microscopic to enormous, looking at disease-causing microbes, the cultivation of staple crops, and human growth from infancy to adulthood. He examines the growth of energy conversions and man-made objects that enable economic activities--developments that have been essential to civilization. Finally, he looks at growth in complex systems, beginning with the growth of human populations and proceeding to the growth of cities. He considers the challenges of tracing the growth of empires and civilizations, explaining that we can chart the growth of organisms across individual and evolutionary time, but that the progress of societies and economies, not so linear, encompasses both decline and renewal. The trajectory of modern civilization, driven by competing imperatives of material growth and biospheric limits, Smil tells us, remains uncertain.

Energy is the only universal currency. One of its many forms must be transformed into another in order for stars to shine, planets to rotate, living things to grow, and civilizations to evolve. Recognition of this universality was one of the great achievements of nineteenth-century science, yet even today there is little literature that tries to view the world broadly through the prism of energy.In this highly original book, ecologist Vaclav Smil takes the principle of universality seriously, presenting a comprehensive and integrated survey of all the forms of energy that shape our world, from the sun to the human body, from bread to microchips. Written in a scientifically sophisticated yet accessible style, Energies consists of eighty-two short essays organized under six headings: Sun and Earth, Plants and Animals, People and Food, Preindustrial Societies, Fossil-Fueled Civilization, and Motion and Information. Each essay explains the science of the energy form as well as its implications for the functioning of the universe, life, or human society. Cross-links and summary diagrams allow easy comparisons among the various levels and flows of energy.