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The Last Hours of Ancient Sunlight: Revised and Updated: The Fate of the World and What We Can Do Before It's Too Late Paperback – April 27, 2004


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Product Details

  • Paperback: 400 pages
  • Publisher: Broadway Books; Rev Upd Su edition (April 27, 2004)
  • Language: English
  • ISBN-10: 1400051576
  • ISBN-13: 978-1400051571
  • Product Dimensions: 8.1 x 5.2 x 0.9 inches
  • Shipping Weight: 10.4 ounces (View shipping rates and policies)
  • Average Customer Review: 4.5 out of 5 stars  See all reviews (105 customer reviews)
  • Amazon Best Sellers Rank: #176,105 in Books (See Top 100 in Books)

Editorial Reviews

From the Inside Flap

While everything appears to be collapsing around us -- ecodamage, genetic engineering, virulent diseases, the end of cheap oil, water shortages, global famine, wars -- we can still do something about it and create a world that will work for us and for our children?s children. The inspiration for Leonardo DiCaprio?s web movie Global Warning, The Last Hours of Ancient Sunlight details what is happening to our planet, the reasons for our culture?s blind behavior, and how we can fix the problem. Thom Hartmann?s comprehensive book, originally published in 1998, has become one of the fundamental handbooks of the environmental activist movement. Now, with fresh, updated material and a focus on political activism and its effect on corporate behavior, The Last Hours of Ancient Sunlight helps us understand--and heal--our relationship to the world, to each other, and to our natural resources.

Excerpt. © Reprinted by permission. All rights reserved.

We're Running Out of Ancient Sunlight
Where our energy came from, how we're "living beyond our means," and what will happen to our children when we run out

It all starts with sunlight.

Sunlight pours energy on the Earth, and the energy gets converted from one form to another, in an endless cycle of life, death, and renewal. Some of the sunlight got stored underground, which has provided us with a tremendous "savings account" of energy on which we can draw. Our civilization has developed a vast thirst for this energy, as we've built billions and billions of machines large and small that all depend on fuel and electricity.

But our savings are running low, which will most likely make for some very hard times.

In Part I we'll lay out the situation as a foundation for planning our response. Topics in Part I include:


*The history of sunlight in the human story

*How can things look okay yet be so bad?

*The importance of trees--their three vital roles in a renewable environment, and some alarming statistics on what's happening as we cut them down

*The accelerating rate of species extinction as we alter the world and its climate


Let's start at the beginning, with the fuel source that gave life to this planet millions of years ago: sunlight.

We're Made Out of Sunlight

The Sun, the hearth of affection and life, pours burning love on the delighted earth.
--Arthur Rimbaud (1854-1891)

In a very real sense, we're all made out of sunlight.

Sunlight radiating heat, visible light, and ultraviolet light is the source of almost all life on Earth. Everything you see alive around you is there because a plant somewhere was able to capture sunlight and store it. All animals live from these plants, whether directly (as with herbivores) or indirectly (as with carnivores, which eat the herbivores). This is true of mammals, insects, birds, amphibians, reptiles, and bacteria . . . everything living. Every life-form on the surface of this planet is here because a plant was able to gather sunlight and store it, and something else was able to eat that plant and take that sunlight energy in to power its body.

In this way, the abundance or lack of abundance of our human food supply was, until the past few hundred years, largely determined by how much sunlight hit the ground. And for all non-human life- forms on the planet, this is still the case--you can see that many of the areas around the equator that are bathed in sunlight are Wlled with plant and animal life, whereas in the relatively sun-starved polar regions, where sunlight comes in at a thinned-out angle instead of straight-on, there are far fewer living creatures and less diversity among them.

The plant kingdom's method of sunlight storage is quite straightforward. Our atmosphere has billions of tons of carbon in it, most in the form of the gas carbon dioxide, or CO(2). Plants "inhale" this CO(2), and use the energy of sunlight to drive a chemical reaction called photosynthesis in their leaves, which breaks the two atoms of oxygen free from the carbon, producing free carbon (C) and oxygen (O(tm)). The carbon is then used by the plant to manufacture carbohydrates like cellulose and almost all other plant matter--roots, stems, leaves, fruits, and nuts--and the oxygen is "exhaled" as a waste gas by the plant.

Many people I've met believe that plants are made up of soil--that the tree outside your house, for example, is mostly made from the soil in which it grew. That's a common mistake. That tree is mostly made up of one of the gases in our air (carbon dioxide) and water (hydrogen and oxygen). Trees are solidified air and sunlight.

Here's how it works: plant leaves capture sunlight and use that energy to extract carbon as carbon dioxide from the air, combine it with oxygen and hydrogen from water, to form sugars and other complex carbohydrates (carbohydrates are also made of carbon, hydrogen, and oxygen) such as the cellulose that makes up most of the roots, leaves, and trunk.

When you burn wood, the "sunlight energy" is released in the form of light and heat (from the fire). Most of the carbon in the wood reverses the photosynthesis. The small pile of ash you're left with is all the minerals the huge tree had taken from the soil. Everything else was gas from the air: carbon, hydrogen, and oxygen.

Animals, including humans, cannot create tissues directly from sunlight, water, and air, as plants can. Thus the human population of the planet has always been limited by the amount of readily available plant food (and animals-that-eat-plants food). Because of this, from the dawn of humanity (estimated at 200,000 years ago) until about 40,000 years ago, the world probably never held more than about five million human inhabitants. That's fewer people worldwide than live in Detroit today.

I suspect the reason for this low global census is that people in that time ate only wild-growing food. If sunlight fell on a hundred acres of wild lands producing enough food to feed ten people--through edible fruits, vegetables, seeds, and wild animals that ate the plants--then the population density of that forest would stabilize at that level. Studies of all kinds of animal populations show that mammals--including humans--become less fertile and death rates increase when there is not enough food to sustain a local population. This is nature's population control system for every animal species.

Similarly, people's clothing and shelter back then were made out of plants and animal skins which themselves came to life because of "current sunlight," the sunlight that fell on the ground over the few years of their lives. We used the skins of animals and trees to construct clothing and housing.


Extracting more sunlight--from other animals


Something important happened sometime around 40,000 years ago: humans figured out a way to change the patterns of nature so we could get more sunlight/food than other species did. The human food supply was determined by how many deer or rabbits the local forest could support, or the number of edible plants that could be found or grown in good soil. But in areas where the soil was too poor for farming or forest, supporting only scrub brush and grasses, humans discovered that ruminant (grazing) animals like goats, sheep, and cows could eat those plants that we couldn't, and could therefore convert the daily sunlight captured by the scrub and wild plants on that "useless" land into animal flesh, which we could eat. So if we could increase the number of the ruminant animals through herding and domestication, then we could eat more of the recent sunlight they were consuming as grasses and plants. This provided to our ancestors more usable energy, both as work animals and as food animals. And so domestication and herding were born.


Extracting more sunlight--from the land

About this same time in history, we also figured out that we could replace inedible forests with edible crops. Instead of having a plot of land produce only enough food to feed ten people, that same land could now be worked to feed a hundred. The beginning of agriculture is referred to as the Agricultural Revolution, and it began to gather momentum about 10,000 years ago. Because we had discovered and begun to use these two methods (herding and agriculture) to more eficiently convert the sun's energy into human food, our food supply grew. Following the basic laws of nature, because there was more food, there could be more humans, and the human population started growing faster.

Within a few thousand years of that time we also discovered how to extract mineral ores from the Earth, to smelt pure metals from them, and to build tools from these metals. These tools, such as plows and scythes, made us much more productive farmers, so the period from 8,000 b.c. until around the time of Christ saw the human population of the world increase from 5 million people to 250 million people, a number just a bit smaller than the current population of the United States. But we were still only using about one year's worth of sunlight energy per year, and so even though we were eliminating some competing or food species, our impact on the planet remained minimal at worst. We weren't "dipping into our savings" to supply our needs, yet.

Then, as it happened, in the Middle Ages we discovered a new source of sunlight (which had been captured by plants nearly 400 million years ago) that Wt in nicely with our new theory that it was acceptable for humans to destroy our competitors for food, to convert all resources of the planet to the production of food for humans: coal, by replacing forests as a source of heat and thus freeing land for agriculture, could be used to increase our production of food.


When ancient sunlight got stored in the Earth


Around 400 million years ago, there was an era that scientists named the Carboniferous Period. Its name derives from the fact that at the beginning of this period there were huge amounts of carbon in the atmosphere in the form of carbon dioxide. Carbon dioxide is a "greenhouse gas," which holds the heat of the Sun against the Earth like the glass of a greenhouse, rather than letting it escape back out into space. During the Carboniferous Period, which lasted 70 million years and extended from 340 to 410 million years ago, there was so much carbon dioxide in the Earth's atmosphere that the temperature of the planet registered much higher than it does today.

The Earth is about 25 percent land and about 75 percent oceans and at that time the entire planet's land mass consisted of one huge continent, which geologists refer to as Pangaea. This continent existed long before the arrival of birds and mammals, even before the dinosaurs, and the only life-forms on the planet were plants, fish, insects, and small reptiles. The high levels of carbon dioxide in the air both trapped sunlight ...

More About the Author

Thom Hartmann is the four-time Project Censored Award-winning, New York Times best-selling author of 23 books currently in print in over a dozen languages on five continents.
Hartmann is also an internationally known speaker on culture and communications, an author, and an innovator in the fields of psychiatry, ecology, and economics.
The co-founder (with his wife, Louise) and former Executive Director of The New England Salem Children's Village (1978) and The Hunter School (1997), he has led national innovations in the areas of residential treatment for abused children and private/public education for learning-disabled children.
He has helped set up hospitals, famine relief programs, schools, and refugee centers in India, Uganda, Australia, Colombia, Russia, and the United States through the German-based Salem International program. Formerly rostered with the State of Vermont as a psychotherapist, founder of The Michigan Healing Arts Center, and licensed as an NLP Trainer by Richard Bandler (who wrote the foreword to one of Thom's books), he was the originator of the revolutionary "Hunter/Farmer Hypothesis" to understand the psychiatric condition known as Attention Deficit Hyperactive Disorder (ADHD).
A guest faculty member at Goddard College in Vermont, he also synthesized the "Younger/Older Culture model" for describing the underpinnings - and possible solutions - to the world's ecological and socio-political crises, suggesting that many of our problems are grounded in cultural "stories" which go back thousands of years.
Leonardo DiCaprio was inspired by Thom's book "The Last Hours of Ancient Sunlight" to make the movie "The 11th Hour" (in which Thom appears), and Warner Brothers is making a movie starring DiCaprio and Robert De Niro from the book Thom co-authored with Lamar Waldron, "Legacy of Secrecy."
Talkers Magazine named Thom Hartmann as the 8th most important talk show host in America in 2011, 2012, and 2013 (10th the two previous years), and for three of the past five years the #1 most important progressive host, in their "Heavy Hundred" ranking. His radio show is syndicated on for-profit radio stations nationwide by Dial-Global, on non-profit and community stations nationwide by Pacifica, across the entire North American continent on SiriusXM Satellite radio, on cable systems nationwide by Cable Radio Network (CRN), on its own YouTube channel, via Livestream on its own Livestream channel, via subscription podcasts, worldwide through the US Armed Forces Network, and through the Thom Hartmann App in the App Store. The radio show is also simulcast as TV in realtime into nearly 60 million US and Canadian homes by the Free Speech TV Network on Dish Network, DirectTV, and cable TV systems nationwide.
His evening TV program, The Big Picture, is wholly owned by his own production company, produced in the RT studios, and licensed to and carried by Free Speech TV in the US, and into over 600 million homes in 104 countries via broadcast and cable by the RT TV network, and distributed worldwide on the web on Hulu.
As an entrepreneur, he's founded several successful businesses which still are operating, and lived and worked with his wife, Louise, and their three (now adult) children on several continents.
He was born and grew up in Michigan, and retains strong ties to the Midwest, although he and Louise have lived in New Hampshire, Vermont, Georgia, Germany, and Oregon...and now live on a boat in Washington D.C. with their attack-cat, Higgins.

Customer Reviews

Very well researched and well written book.
David L. Doft
This book is very thought provoking and I am really liking it!
D. Moyer
This is an important book for everyone to read.
Amazon Customer

Most Helpful Customer Reviews

159 of 161 people found the following review helpful By Nicholas Soucy on July 21, 2005
Format: Paperback
This is a nearly flawless achievement of creative nonfiction. Hartmann addresses some of the most complex and important issues of human and worldly culture with crisp, enjoyable language.

Thom Hartmann deserves to be recognized as a philosopher because of his clarity of thought and the quality of his observations and arguments.

The various topics are diverse but interrelated. It's difficult to perfectly summarize the contents of thie book, but Hartmann addresses each aspect of life with a sad wisdom and a hopeful optimism.

He addresses anthropocentrism: the tendency humans have to view the rest of the world as valuable only if is can be used or appreciated by people. This type of thinking has been instrumental in our gradual and steady distance from nature in many ways. Hartmann explains why distance from nature is detrimental to the health of the planet, to our bodies and our psychological well-being.

Specifically, Hartmann opens up a relatively unnoticed world of history, in the tradition of Howard Zinn, Derrick Jensen (A Language Older Than Words) and Daniel Quinn (Ishmael). His candor is needed, and his analysis of history and contemporary culture is at once astonishing, necessary and intriguing. Chapter after chapter his words, ideas and citations challenge you to think, to wonder and reconsider human behavior and lies.

He has borrowed some ideas from the aforementioned authors and put them to good use. He is a better writer than Daniel Quinn, who delivers a choppy, amateurish prose in spite of his good intentions. Hartman better converys his ideas, so if you're one of the millions of fans of Ishmael, I guarantee you'll want to buy or rent this book.
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151 of 159 people found the following review helpful By Marcus Macauley on May 13, 2004
Format: Paperback
Thom Hartmann's "The Last Hours of Ancient Sunlight" is extremely important and cogent, and needs to be read and absorbed by many to ensure the possibility of a future for the human race and all other life on Earth. Divided into three main parts, this book explains in detail where we are, how and why we got here, and what we can do for a brighter future. Very practical, well-researched, comprehensive. I am not aware of a better book on the issues, especially since it not only sets out the realities of our situation (dependence on dwindling oil and clean-water supplies, destruction of forests and plant/animal species, unsustainable population growth, frequent wars, third-world and first-world impoverishment, etc.), but also explains why, fundamentally, human civilization has gotten us into this mess (tracing the causes back thousands of years to the basis of civilization and comparing the recent city-state or nation-state lifestyle to that of the much older tribe), and what we can possibly do to change our course and save our children and their children and the planet they will inherit.
I would give a more detailed or articulate description, but I lent my copy out the day I finished reading it, and several people are already waiting in line to borrow it. If there is a book to buy multiple copies of and give away, this is the best one I have found. Do not let it sit on the bookshelf indefinitely - after you read it, pass it around, from one person to another, making sure it never stays the same place, unread, for long. If you must keep a copy for your own reference, at least buy a second one to pass around to your friends.
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70 of 73 people found the following review helpful By Douglas C. Dutting on September 28, 2004
Format: Paperback
I was shocked, entertained, surprised, touched and extremely moved by the contents of this well written eye-opening book. Opposed to other peak-oil subject books this book is not concentrating on the numbers and technical solutions but on our cultural roots and our pathological and illogical behavior as a result. The spiritual part of this book did not bother me at all despite the fact that I don't consider myself as a very spiritual person. I can fully understand his strong arguments to dig into our roots and that we must learn from the point we strayed to the path of superior feeling, materialism, short-term profits, etc... Hartmann delivers his point very well and I recommend this book to all people who think that we can work our way out of this mess we are in by wishfull thinking or technological inventions and to all people who see no way out of it at all (so this are about all people in the industrialized world). We only have to reinvent ourselves and this book shows us the way. Without a doubt one of the top five most important books I have ever read in my life if not the number one. I even think that this book should be read by all children in every school in Europe and America!
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27 of 28 people found the following review helpful By John E. Nelson MD on September 17, 2006
Format: Paperback Verified Purchase
As I was researching global warming for my novel, The Remembering, A Novel of Karma and Global Peril, I read five books on the subject. By far, Harmann's was the most thoughtful and helpful, especially his discussion of how "ancient sunlight" -- oil and other fossil fuels -- engendered the industrial revolution and an unsustainable expansion of human population since the 1880's. Especially useful was his projection of how the human race will fare when oil supplies dwindle during this century along with mass population displacements. There are certain ignore-ant politicians who would benefit from this information and its visionary suggestions on how we might correct our shortsighted errors before it's too late.

John Nelson MD, author The Remembering, Healing the Split, Sacred Sorrows.
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