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Storms of My Grandchildren: The Truth About the Coming Climate Catastrophe and Our Last Chance to Save Humanity Paperback – December 21, 2010

4.5 4.5 out of 5 stars 405 ratings

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In his Q&A with Bill McKibben featured in the paperback edition of Storms of My Grandchildren, Dr. James Hansen, the world's leading climatologist, shows that exactly contrary to the impression the public has received, the science of climate change has become even clearer and sharper since the hardcover was released. In Storms of My Grandchildren, Hansen speaks out for the first time with the full truth about global warming: The planet is hurtling even more rapidly than previously acknowledged to a climatic point of no return. In explaining the science of climate change, Hansen paints a devastating but all-too-realistic picture of what will happen in our children's and grandchildren's lifetimes if we follow the course we're on. But he is also an optimist, showing that there is still time to take the urgent, strong action that is needed- just barely.


Praise for James Hansen and Storms of My Grandchildren:

"James Hansen gives us the opportunity to watch a scientist who is sick of silence and compromise ...offer up the fruits of four-plus decades of inquiry and ingenuity just in case he might change the course of history."
-Los Angeles Times
"Dr. James Hansen is Paul Revere to the foreboding tyranny of climate chaos-a modern-day hero who has braved criticism and censure and put his career and fortune at stake to issue the call to arms against the apocalyptic forces of ignorance and greed."-
Robert F. Kennedy Jr.
"When the history of the climate crisis is written, Hansen will be seen as the scientist with the most powerful and consistent voice calling for intelligent action to preserve our planet's environment."-
Al Gore, Time magazine

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Editorial Reviews

Review

“In Storms of My Grandchildren, James Hansen gives us the opportunity to watch a scientist who is sick of silence and compromise...offer up the fruits of four-plus decades of inquiry and ingenuity just in case he might change the course of history.... An urgent book.” ―Los Angeles Times

“Hands down the best, most informative, brilliantly written book on general climate science I've ever read.” ―
DailyKos.com

“Rich in invaluable insights into the geopolitics as well as the geophysics of climate change, Hansen's guaranteed-to-be-controversial manifesto is the most comprehensible, realistic, and courageous call to prevent climate change yet.” ―
Booklist (starred)

“After sounding the climate alarm in papers and conferences for two decades, here Hansen takes off the gloves.... With urgency and authority, Hansen urges readers to speak out-taking to the streets if necessary-to protect the Earth from calamity for the sakes of their children and grandchildren.” ―
Kirkus (starred)

“When the history of the climate crisis is written, Hansen will be seen as the scientist with the most powerful and consistent voice calling for intelligent action to preserve our planelt's environment.” ―
Al Gore, Time Magazine

About the Author

Perhaps best known for bringing global warming to the world's attention in the 1980s when he first testified before Congress, Dr. James Hansen is considered the world's leading climatologist. The head of NASA's Goddard Institute for Space Studies, he served as Al Gore's science advisor for An Inconvenient Truth. He teaches at the Department of Earth &Environmental Sciences at Columbia University, lectures at universities and other institutions throughout the world and has been interviewed in the New York Times and other publications. This is his first book.

Product details

  • Publisher ‏ : ‎ Bloomsbury USA; Reprint edition (December 21, 2010)
  • Language ‏ : ‎ English
  • Paperback ‏ : ‎ 336 pages
  • ISBN-10 ‏ : ‎ 1608195023
  • ISBN-13 ‏ : ‎ 978-1608195022
  • Item Weight ‏ : ‎ 12.3 ounces
  • Dimensions ‏ : ‎ 6.01 x 0.91 x 8.34 inches
  • Customer Reviews:
    4.5 4.5 out of 5 stars 405 ratings

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James C. Hansen
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Perhaps best known for bringing global warming to the world's attention in the 1980s when he first testified before Congress, Dr. James Hansen is considered the world's leading climatologist. The head of NASA's Goddard Institute for Space Studies, he served as Al Gore's science advisor for An Inconvenient Truth. He teaches at the Department of Earth &Environmental Sciences at Columbia University, lectures at universities and other institutions throughout the world and has been interviewed in the New York Times and other publications. This is his first book.

Customer reviews

4.5 out of 5 stars
405 global ratings

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Customers say

Customers find the book provides a clear understanding of the science of global warming. They describe it as brilliant, comprehensive, and interesting. The writing is well-written for the general public, with an artistry that helps keep the book engaging. Readers appreciate the compelling narrative and interwoven storyline. The book serves as a textbook for curbing carbon-based fuel production and consumption. Overall, customers consider it a worthwhile read and a great transaction.

AI-generated from the text of customer reviews

104 customers mention "Science content"89 positive15 negative

Customers find the book provides a clear understanding of global warming science and issues. They appreciate the author's outspoken approach and ability to blend science with real-world politics. The book presents evidence of climate change and the catalytic effect human activity has on it. Readers also mention that the author makes compelling policy propositions that are not discussed in the current debate.

"...Surprises await readers of any persuasion. The book contains a mix of equal parts politics and science, so a guide to the chapters may be helpful...." Read more

"...Dr. Hansen uses compelling arguments based on sound science to educate us on the dangers of global warming and provides suggestions on how to avoid..." Read more

"...Dr. Hansen is clearly an outspoken scientist who took on challenging the establishment, and is to be commended and admired for his efforts...." Read more

"...However, the temperature record that has been collected, weather balloon and satellite data, the Keeling curve, other data, and Paleoclimate research..." Read more

64 customers mention "Readability"64 positive0 negative

Customers find the book comprehensive and interesting. They say it's well-researched, educational, and persuasive. Readers also mention it's one of the most important books they've read on climate change.

"...] is a fabulous, authoritative book on alternative energy, and provides the back story on..." Read more

"...Positives: 1. A well-written, thoroughly researched book the state of global warming. 2...." Read more

"...Dr. Hansen's book was excellent in that regard and I learned a lot more and in particular about some of the latest findings and conclusions based..." Read more

"...book would have benefited from edited his writing style, but the content is there and very persuasive...." Read more

34 customers mention "Reading pace"24 positive10 negative

Customers find the book well-written for the general public. They appreciate the author's skill in describing concepts and finding it an engaging read. The book is considered a must-read for anyone interested in climate change, including politicians, engineers, and technicians.

"...A nice graph of solar output and the beginning of the White-House censorship story. Chp. 7: The Keeling Curve. &..." Read more

"...Storms of My Grandchildren. Positives: 1. A well-written, thoroughly researched book the state of global warming. 2...." Read more

"...message, this is perhaps understandable, but it makes it an unnecessarily difficult read...." Read more

"...This is a must read for every politician, engineer and technician responsible for energy, and all consumers of energy...." Read more

9 customers mention "Narrative quality"9 positive0 negative

Customers find the narrative engaging and compelling. They describe it as an important historical account of science history, written by a former NASA climatologist. The book is current and relevant, with 11 chapters.

"...This 320-page book is composed of the following eleven chapters: 1. The Vice President's Climate Task Force, 2...." Read more

"...environmental science, it is political science, and a first hand account of science history...." Read more

"...And there is an interwoven narrative, including his public efforts to get the information into the public process at the highest levels...." Read more

"...For an open & analytical mind, this book is educational & compelling. Don't take my word on it; read it & form your own opinion." Read more

8 customers mention "Carbon footprint"8 positive0 negative

Customers find the book informative about climate change and its impact on climate change. They say it's a textbook for curbing carbon-based fuel production and consumption. The book is also about saving our planet and using alternative energy sources without nuclear waste or CO2 emissions. Readers mention that the book provides the back story on the need for alternative energy and the catalytic effect human activity has on the accelerating warming, ice cap shrinkage, and sharp increases of carbon dioxide in the atmosphere.

"...] is a fabulous, authoritative book on alternative energy, and provides the back story on the need for carbon capture..." Read more

"...is a strong correlation between reduced fertility rates, increased economic well-being, and women's rights and education...." Read more

"...: It clearly explains the science of global warming & its impact on climate change...." Read more

"...He presents the evidence of climate change and the catalytic effect human activity has on the accelerating warming of the planet in lay terms that..." Read more

7 customers mention "Value for money"7 positive0 negative

Customers appreciate the book's value for money. They find it informative and a worthwhile read.

"...the GW Bush administration attempted to muzzle him are well worth the price of admission...." Read more

"...with intellectual rigor the author clarifies the moral, social, economic and technological imperatives humanity is facing with regard to climate..." Read more

"Great book, bought used at a good price!" Read more

"Best to explain climate warming, but technical and. Worth it!" Read more

7 customers mention "Humanness"4 positive3 negative

Customers have differing views on the book's humane approach. Some find it relatable and humanizing, describing the author's courage and decency. Others feel humans are doomed and the issue is serious.

"...Dr. Hansen strikes me as a down-to-earth human, a man you might like so sit down for coffee with, while he patiently explains the science of..." Read more

"...Possibly the book's biggest surprise: "It is extremely irresponsible, in my opinion, to make the assumption that efficiency and renewables are..." Read more

"...Breathtaking courage, humanity, decency; not the Hansen since of the movie star hat, and the token for the press 2 hour show arrests...." Read more

"...This is a very serious issue, with serious consequences for the planet, as humanity has known it for the last 10,000 years...." Read more

7 customers mention "Pacing"0 positive7 negative

Customers find the book's pacing slow in parts. They mention the story is grim, but the conclusion demands attention. Some readers feel the author rambles on for most of the book. Overall, they describe the book as depressing but worth reading.

"...The story is very grim, but Dr. Hansen's energy and sense of responsibility is endless...." Read more

"...Scientist" and is diluted to an inexcusable degree by all the irrelevant fluff and non-science preaching...." Read more

"...you can absorb but skip ahead if necessary because the conclusion demands attention." Read more

"Too scientific. He rambles on for most part of the book. I had to put it down. Really boring in some parts." Read more

Top reviews from the United States

  • Reviewed in the United States on December 8, 2009
    James Hansen, the world's most famous climate scientist, is thought by climate contrarians to be part of a liberal conspiracy. But as you'll see below (Chp. 9), he's as independent as he claims -- critical of Republicans for suppressing climate change science, but critical of Democrats for blocking the most important part of the solution. Surprises await readers of any persuasion. The book contains a mix of equal parts politics and science, so a guide to the chapters may be helpful. (For why this book is best on climate science, see my wonkish "comment" below.)

    Chp. 1: Dick Cheney's climate task force. The frustrations of politics with a little science tossed in.
    Chp. 2: The A-team. Hansen retreats and thinks through climate policy with his students.
    Chp. 3: Visit to the White House. He's hopeful, then disappointed. This chapter launches into serious Paleoclimate science and explains the mystery of why the world starts to warm from an ice age before carbon dioxide increases. Fascinating if you like science. Otherwise, skim for interesting tidbits -- ice that would crush "New York City to smithereens," the development of civilization, coastal fishing, and more.

    The first big surprise: "It may seem that I am harsh on climate models." He doesn't think they're good at estimating "climate sensitivity." In fact, he says, "Thirty years later [after the National Academy's 1979 estimate], models alone still cannot do much better."

    Chp. 4: Back to 1989. Hansen asks for satellite instruments to collect crucial global warming data. No luck.
    Chp. 5: A Slippery Slope. In 2003 Hansen writes an article with "extensive criticisms of IPCC" (UN climate science). He is not pleased that the best IPCC model "concluded that the ice sheets would grow as the world became warmer."
    Chp. 6: Humanity's Trap. Aerosols are now counteracting carbon but we don't know much about them. A nice graph of solar output and the beginning of the White-House censorship story.
    Chp. 7: The Keeling Curve. "Reality contrasts markedly with the impression created by the media." Carbon dioxide is not growing faster than expected by the IPCC scenarios. More on White-House censorship.
    Chp. 8: Where Should We Aim? Hansen gets new data and draws "one of the most beautiful curves on the planet," showing how it was far hotter (with no ice) 50 million years ago. From that and more science, he concludes that we must return the atmosphere to 350 ppm.

    Chp. 9: An Honest Path. Possibly the book's biggest surprise: "It is extremely irresponsible, in my opinion, to make the assumption that efficiency and renewables are all that will be needed." We will need fast breeder reactors, and fortunately we have "$50 trillion" worth of left-over uranium for fuel.

    He blames the Democrats. "Argonne scientists ... were ready to build a demonstration fast-reactor power plant." But in 1994, Bill Clinton announced, "We will terminate unnecessary programs in advanced reactor development." Hansen concludes, "It seems possible that antinuke people, who heavily support the Democratic Party, were being repaid."

    He explains his economic proposals for "a rising price on carbon applied at the source" in the form of "fee-and-dividend." "A cap-and-trade agreement will be just as hard to achieve as was the Kyoto Protocol."

    Chp. 10: Venus. "If we also burn the tar sands and tar shale, I believe the Venus syndrome is a dead certainty."
    Chp. 11: Storms of My Grandchildren. Recent anti-coal protest activity, and some science of storms.

    In this age of political correctness, right and left, it's a delight to be invited into Hansen's home-spun, un-censored, scientific world. If you appreciate the fresh air, two very different books may be of interest. Carbonomics: How to Fix the Climate and Charge It to OPEC explains why Hansen's refunded carbon tax is a good idea that works, and predicted Copenhagen's failure over a year in advance: "developing countries will not accept internationally set caps." It then explains what to do about it. Sustainable Energy - Without the Hot Air is a fabulous, authoritative book on alternative energy, and provides the back story on the need for carbon capture or nuclear power. Together, the three books cover most of climate-policy related science with almost no overlap.

    In summary, this is no journalistic quick read. It's fascinating, not because it's slickly written -- it's certainly not -- but because both James Hansen and his science are fascinating and you get a front row seat as the story unfolds.
    283 people found this helpful
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  • Reviewed in the United States on February 26, 2010
    I hope not, but it's hard to find a basis for optimism after reading James Hansen's book and looking at the current American political situation. Hansen's prescriptions for averting a climate catastrophe are tough to meet, and at the moment there is a political backlash against bold government endeavors such as these. Right now, taking action on climate change is largely perceived as one competing political issue among many at best, and as a power-grab based on tainted science at worst. Hansen argues that maintaining the human civilization that developed after the last ice age depends on us stabilizing the climate.

    It was James Hansen's testimony before congress in 1988 that brought global warming into the public square as an issue, and he has been at the center of the shouting match ever since. He begins the book by recounting his efforts to convince the political leadership of the importance of tackling climate change in the Bush Administration. Unfortunately, the political appointees in NASA did all they could to keep him from expressing the views in a public setting, using a law about government employees engaging in political campaigns. Hansen expressly says that he prefers to stick to the science, but that the problem is so daunting that he had to speak out.

    Hansen actually talks about the science behind climate change, and makes it relatively easy for readers to understand. With a large amount of Co2 emissions, heat is trapped in the atmosphere, and there's an energy imbalance between how much heat is coming into the earth from the sun and how much is radiated back into space- thus resulting in the temperature warming up. So Co2 is a climate "forcing" as he puts it. There are many kinds of climate forcings, many of them natural, but as Hansen points out, human Co2 emissions outpace them by several orders of magnitude. What has Hansen so concerned about the present situation is his work with paleo-climate data, which, he says, are more important than climate models, useful though they may be. He persuasively argues that the last mass-extinction coincided with release of powerful methane hydrates in the ocean, and that this led to amplifying feedback loops, and that we are in danger of pushing the climate to a similar tipping point.

    The solutions he presents are a tall order to meet, and frankly I think they will be nearly impossible in the current political situation. First and foremost, we need to cut carbon emissions to 350 ppm to avoid pushing the climate past a tipping point, and cap-and-trade won't get us there. The "offsets" are based on phantom emissions reductions in the future, which are rubber-stamped by an international body and then sold to other companies so that they can emit more carbon- most of the targeted "offsets" are rarely met, and the energy efficiency they would have achieved in any case without the cap-and-trade. What he proposes is a tax-and-dividend, (or fee-and-dividend)- a gradually rising price on carbon collected by the government, and proceeds distributed to citizens. The idea is to create an incentive for a drastically reduced carbon economy because, as he put it in an NPR interview, as long as fossil fuels are cheaper, people will continue to use them. Second, we need to phase out coal- put a moratorium on all new coal plants unless they are built with the capacity to completely capture their carbon emissions. Energy efficiency is an important aspect too, but people buying more efficient light bulbs and cars is not going to fix this. Perhaps most controversially among environmentalists, he backs the increased use of nuclear power to meet our electricity needs; he is all for wind and solar as part of the solution, but as of now they have not shown enough consistency in meeting energy needs.

    What makes it particularly difficult for me to maintain optimism that a political solution to this is going to be found is what Hansen says about special interests and the necessity of public pressure. He is very critical of the way special interests have influenced the way environmental legislation is crafted, and of the way even organizations such as the Environmental Defense Fund have a "Washington mentality" which prevents what needs to be done from being done; i.e., settling for cap-and-trade and for capturing carbon emissions to be added to new coal plants "eventually." Unfortunately, the recent Supreme Court decision in Citizens United does not bode well for Hansen's hopes. Furthermore, he says that there needs to be public pressure for the best legislation, and perhaps even civil disobedience directed at coal companies. Unfortunately, at the moment the populist winds are not blowing in this direction. The people who see climate change as the important issue that Hansen does are in a small minority. And the problem is that by the time climate change causes disastrous effects, it will be too late to do much about it. There may perhaps be some technological breakthrough in energy or in carbon capture that can do away with coal's carbon emissions. Moreover, the political scene is as chaotic and nonlinear as our planet's climate, so things may change yet. In any case, well-informed citizens owe it to themselves to read this important book.
    64 people found this helpful
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Top reviews from other countries

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  • Hans Stoger
    5.0 out of 5 stars excellent book
    Reviewed in Canada on March 30, 2024
    An excellent book that explains very well the dangers of CO2 emissions from fossil fuels, i.e. climate change
    The author mentions runaway green house gas effects and compares our atmosphere to that of the planet Venus. I think that is scare mongering, our atmosphere contains about 0.04 pc CO2 (i.e. less than 1 percent) whereas the atmosphere of Venus is about 96 pc CO2. We have a long way to go before climate change becomes a threat but the author is correct that we must act now while we still have time
  • Usuari_Linux
    5.0 out of 5 stars Alló que els nostres governants no volen saber.
    Reviewed in Spain on January 23, 2017
    Aquest llibre explica als no científics els fets físics que provoquen el canvi climàtic i les conseqüències terribles que patiran els nostres fills. Absolutament recomanable si volem tindre un cultura científica sobre aquest tema. Si heu sentit dir al vostre president que el canvi climàtic no existeix cal que deixeu de fer cas al vostre president i llegiu a algú que ha investigat el tema durant quasi tota la seua vida professional.
    Allò que no m'ha agradat ha estat la part bibliogràfica inicial que he trobat massa llarga i que està escrita per al públic americà.
  • dodo
    4.0 out of 5 stars About climate change science and politics
    Reviewed in France on December 12, 2013
    I learned interesting, convincing, and actually mind-blowing information about global warming. The book describes also Hansen's fight to let the truth out and politicians reaction.
  • Alan Neale
    5.0 out of 5 stars From scientific enquiry to political action
    Reviewed in the United Kingdom on January 10, 2013
    The storms in this book's title refer to the extreme weather conditions the author's (and our) grandchildren will have to endure if business continues as usual. They might just as well refer to the political storms that brew up whenever anyone challenges the vested interests that keep business operating as usual, particularly in relation to energy production and use.

    The further one gets into the book, the clearer it becomes why James Hansen is seen as a bit of a maverick by some of his colleagues, and why he has become such a thorn in the side of the US political and corporate establishment. As a scientist, he combines rigour with breadth in developing an understanding of the complexity of climate systems and how they might change. And, unusually for a scientist, he is prepared to to follow up on that understanding and get involved in policy debates. You get a real sense of someone who is committed not only to uncovering the truth, but also to getting involved in the political process of making sure that the truth is acted upon.

    Confronted as we so often are with accusations that the predictions of climate models are unnecessarily alarmist, it is refreshing to read Hansen's assessment of their limitations. Far from being alarmist, he suggests, they systematically underestimate the risks of continued CO2 growth, by taking insufficient account of amplifying feedbacks and potential tipping points. He draws on palaeoclimatic evidence to identify areas where rapid climate change occurred in the past, and could recurr in the not too distant future - Greenland and Antarctica in particular. Here, Hansen argues, ice sheets could melt much faster, and produce much higher sea levels, than the linear trends suggested by the climate models on which IPCC projections have been based.

    Hansen's political journey started with attempts to convince US politicians of the urgency of the climate crisis, and he describes a number of high level presentations and discussions to which he contributed. What he came to realise was that the politicians would listen selectively - the more he emphasised the overwhelming importance of the link between fossil fuel consumption and climate instability, the more they would focus on some other aspect of his evidence, like the need for methane capture. Disillusion with the corrupting power of fossil fuel lobbyists soon set in, and he turned his attention to raising popular awareness, and getting involved with direct action against coal extraction.

    The book's policy proposals are often controversial, and always thought-provoking. Hansen's argument that fee-and-dividend is a better basis for carbon emission controls than cap-and-trade is a compelling one. More problematic, in my view, is his reluctance to consider measures to reduce energy demand (other than via efficiency improvements), or to manage demand in such a way as to balance the intermittency of most renewables. What he doesn't challenge is energy-intensive Western lifestyles. It is in this context that his pro-nuclear stance can be understood - if renewables are incapable of meeting the needs of those lifestyles, then, he argues, nuclear would be less damaging than coal or gas in filling the gap.

    I was also inspired by what the book revealed about James Hansen the human being. His commitment to the scientific process, and to ensuring the implications of its discoveries are heeded. The effort he puts into meeting the challenges of communicating complex ideas to an unresponsive and often suspicious public (including, towards the end of the book, a brief but illuminating sci-fi tale). The quiet pleasure he experiences, returning home from an operation for prostate cancer, to discover that the habitat he has created, with his grandchildren, to help Monarch butterflies on their long migration journey has been successful. And, above all, the responsibility he feels to do what he can to ensure that the environment his grandchildren will inherit as adults will be a livable one.

    'Storms of my grandchildren' was published 4 years ago, and climate science is a fast moving field, so some of the material can seem a bit dated now. But Hansen has set up a website, referenced at the end of the book, which regularly updates the key material. Taken together, book plus internet updates, this is definitely a 5-star package.
  • Stefan Thiesen
    5.0 out of 5 stars Top Experte mit beängstigenden Einsichten
    Reviewed in Germany on September 30, 2010
    Als der Mann, der sich intensiver und länger als die meisten anderen Wissenschaftler seines Forschungsfeldes mit der Stabilität und Evolution der Erdatmosphäre beschäftigt hat, sieht er - auch intuitiv - die Risiken sehr viel deutlicher, als alle anderen. Man stelle sich einen Onkologen vor, der seit 40 Jahren an konkreten Lungenkrebsfällen starker Raucher die Auswirkung des Rauchens erforscht. Man stelle sich vor der Mann hätte tausende qualvoll sterben sehen, und die Politik würde empfehlen es würde zur Gesundheitsvorsorge reichen, wenn Kinder maximal zwei Packungen am Tag rauchen. Kein Wunder also, dass er sich Sorgen um seine Enkel machen würde. Hansens Nähe zur Weltraumforschung verschafft ihm überdies einen globalen Ausblick, wie ihn nur wenige haben - auch wenige Wissenschaftler - jedenfalls wird er selten publiziert. Carl Sagan war auch so jemand. In der Planetologie und Astrobiologie wird unter anderem erforscht und untersucht, wie sich Planetenatmosphären allgemein bilden, entwickeln und wie stabil sie unter welchen Bedingungen sind. Zum einen an konkreten Objekten - den Planeten und Monden des Sonnensystems, inklusive der Erde - zum anderen spekulativ anhand mathematischer Modelle und der beginnenden Fernerkundung von Planeten anderer Sonnensysteme. Für Astrophysiker, Planetologen und Geologen ist das Werden und Vergehen ganzer Welten keine ungewöhnliche Sache. Sterne explodieren, Planetenatmosphären kippen um, Welten kollidieren und zerplatzen. Für den Astrophysiker Hansen ist aus wissenschaftlicher Sicht die Möglichkeit eines Runaway Treibhauseffektes auf der Erde mit einem neuen Temperaturgleichgewicht in Bereichen, die Leben, wie wir es derzeit kennen, nicht ermöglichen, nicht besonders ungewöhnlich. Es gibt keine Berührungsängste mit dem emotional Undenkbaren. Die Erde als Ganzes ist für den Astrophysiker, was für einen Gewässerökologen ein eutrophierter Gartenteich ist. Niemand bezweifelt die Aussagen eines berühmten Limnologen über die Auswirkung von Eutrophierung auf das komplexe System Gartenteich. Die Situation ändert sich dadurch, dass wir alle - auch Jim Hansen und seine Enkel - Bakterien in diesem Gartenteich sind. An diesem Punkt wird Hansen - zurecht - emotional. Ich finde es ebenfalls unerträglich zu einer Spezies zu gehören, die sich und die Welt von der sie lebt, potentiell vollständig vernichtet. Wichtig hierbei ist das Wort potentiell, denn wir haben es mit Risikoabschätzungen - Wahrscheinlichkeiten also - zu tun. An irgend einem Punkt befinden sich Sprungstellen, Kipp Punkte. Wir wissen nicht wo, aber sie existieren. Seltsamer Weise unternehmen wir gigantische Anstrengungen um anderen und häufig sehr viel diffuseren Risiken zu begegnen - Krankheit, angeblicher Terrorismusgefahr, militärischen Bedrohungen oder Kreditausfällen. All diese Dinge sind mit harten wissenschaftlichen Kriterien nicht wirklich zu fassen. Von der Klimaforschung aber wird ständig Perfektion und Fehlerfreiheit erwartet, während etwa in der Wirtschaft jeder Spinner seinen aus den Fingern gesaugten Senf in die Debatte werfen darf. Nach meiner Einschätzung ist Hansens mutiges und wütendes Buch eines der ganz wenigen, die im Raum stehende Gefahr wirklich akkurat erfassen. Der Venus Effekt steht für den völligen Zusammenbruch einer überhitzten Atmosphäre. Und es gibt ihn tatsächlich, gar nicht weit von der Erde entfernt. Der Effekt ist eingetreten, wie jeder Hobby Astronom weiß. Und das Argument unerfahrener Gegner die Erde sei weiter von der Sonne entfernt zieht nicht. Auf der Venus herrscht eine Oberflächentemperatur von bis zu annähernd 500°C. Für eine totale globale Katastrophe auf der Erde reicht aber bereits eine Erhöhung von wenigen bis wenigen 10 °C aus. Auch ein Stabilitätspunkt jenseits der Verdampfungstemperatur von Wasser ist nicht unmöglich. Aber - Geld und Macht im Hier und Jetzt sind natürlich wichtiger als solche globalen Überlegensfragen... Hansen, als Top Experte, befürchtet, der Punkt ohne Wiederkehr könnte bereits überschritten sein. Dass gerade er das sagt ist hochgradig beängstigend.

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