The Future of Life
Autor Edward Osborne Wilsonen Limba Engleză Paperback – 28 feb 2003
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Specificații
ISBN-13: 9780679768111
ISBN-10: 0679768114
Pagini: 256
Ilustrații: 1 ILLUSTRATION
Dimensiuni: 134 x 204 x 18 mm
Greutate: 0.27 kg
Ediția:Vintage Books.
Editura: Vintage Publishing
ISBN-10: 0679768114
Pagini: 256
Ilustrații: 1 ILLUSTRATION
Dimensiuni: 134 x 204 x 18 mm
Greutate: 0.27 kg
Ediția:Vintage Books.
Editura: Vintage Publishing
Notă biografică
Edward O. Wilson is the author of two Pulitzer Prize-winning books, On Human Nature (1978) and The Ants (1990, with Bert Hölldobler), as well as many other groundbreaking works, including Consilience, Naturalist, and Sociobiology. A recipient of many of the world’s leading prizes in science and conservation, he is currently Pellegrino University Research Professor and Honorary Curator in Entomology of the Museum of Comparative Zoology at Harvard University. He lives in Lexington, Massachusetts, with his wife, Renee.
Extras
Chapter 1
TO THE ENDS OF EARTH
The totality of life, known as the biosphere to scientists and creation to theologians, is a membrane of organisms wrapped around Earth so thin it cannot be seen edgewise from a space shuttle, yet so internally complex that most species composing it remain undiscovered. The membrane is seamless. From Everest's peak to the floor of the Mariana Trench, creatures of one kind or another inhabit virtually every square inch of the planetary surface. They obey the fundamental principle of biological geography, that wherever there is liquid water, organic molecules, and an energy source, there is life. Given the near-universality of organic materials and energy of some kind or other, water is the deciding element on planet Earth. It may be no more than a transient film on grains of sand, it may never see sunlight, it may be boiling hot or supercooled, but there will be some kind of organism living in or upon it. Even if nothing alive is visible to the naked eye, single cells of microorganisms will be growing and reproducing there, or at least dormant and awaiting the arrival of liquid water to kick them back into activity.
An extreme example is the McMurdo Dry Valleys of Antarctica, whose soils are the coldest, driest, and most nutritionally deficient in the world. On first inspection the habitat seems as sterile as a cabinet of autoclaved glassware. In 1903, Robert F. Scott, the first to explore the region, wrote, "We have seen no living thing, not even a moss or lichen; all that we did find, far inland among the moraine heaps, was the skeleton of a Weddell seal, and how that came there is beyond guessing." On all of Earth the McMurdo Dry Valleys most resemble the rubbled plains of Mars.
But the trained eye, aided by a microscope, sees otherwise. In the parched streambeds live twenty species of photosynthetic bacteria, a comparable variety of mostly single-celled algae, and an array of microscopic invertebrate animals that feed on these primary producers. All depend on the summer flow of glacial and icefield meltwater for their annual spurts of growth. Because the paths of the streams change over time, some of the populations are stranded and forced to wait for years, perhaps centuries, for the renewed flush of meltwater. In the even more brutal conditions on bare land away from the stream channels live sparse assemblages of microbes and fungi together with rotifers, bear animalcules, mites, and springtails feeding on them. At the top of this rarefied food web are four species of nematode worms, each specialized to consume different species in the rest of the flora and fauna. With the mites and springtails they are also the largest of the animals, McMurdo's equivalent of elephants and tigers, yet all but invisible to the naked eye.
The McMurdo Dry Valleys's organisms are what scientists call extremophiles, species adapted to live at the edge of biological tolerance. Many populate the environmental ends of Earth, in places that seem uninhabitable to gigantic, fragile animals like ourselves. They constitute, to take a second example, the "gardens" of the Antarctic sea ice. The thick floes, which blanket millions of square miles of ocean water around the continent much of the year, seem forbiddingly hostile to life. But they are riddled with channels of slushy brine in which single-celled algae flourish year-round, assimilating the carbon dioxide, phosphates, and other nutrients that work up from the ocean below. The garden photosynthesis is driven by energy from sunlight penetrating the translucent matrix. As the ice melts and erodes during the polar summer, the algae sink into the water below, where they are consumed by copepods and krill. These tiny crustaceans in turn are the prey of fish whose blood is kept liquid by biochemical antifreezes.
The ultimate extremophiles are certain specialized microbes, including bacteria and their superficially similar but genetically very different relatives the archaeans. (To take a necessary digression: biologists now recognize three domains of life on the basis of DNA sequences and cell structure. They are the Bacteria, which are the conventionally recognized microbes; the Archaea, the other microbes; and the Eukarya, which include the single-celled protists or "protozoans," the fungi, and all of the animals, including us. Bacteria and archaeans are more primitive than other organisms in cell structure: they lack membranes around their nuclei as well as organelles such as chloroplasts and mitochondria.) Some specialized species of bacteria and archaeans live in the walls of volcanic hydrothermal vents on the ocean floor, where they multiply in water close to or above the boiling point. A bacterium found there, Pyrolobus fumarii, is the reigning world champion among the hyperthermophiles, or lovers of extreme heat. It can reproduce at 235°F, does best at 221°F, and stops growing when the temperature drops to a chilly 194°F. This extraordinary feat has prompted microbiologists to inquire whether even more advanced, ultrathermophiles exist, occupying geothermal waters at 400°F or even higher. Watery environments with temperatures that hot exist. The submarine spumes close to the Pyrolobus fumarii bacterial colonies reach 660°F. The absolute upper limit of life as a whole, bacteria and archaeans included, is thought to be about 300°F, at which point organisms cannot sustain the integrity of DNA and the proteins on which known forms of life depend. But until the search for ultrathermophiles, as opposed to mere hyperthermophiles, is exhausted, no one can say for certain that these intrinsic limits actually exist.
During more than three billion years of evolution, the bacteria and archaeans have pushed the boundaries in other dimensions of physiological adaptation. One species, an acid lover (acidophile), flourishes in the hot sulfur springs of Yellowstone National Park. At the opposite end of the pH scale, alkaliphiles occupy carbonate-laden soda lakes around the world. Halophiles are specialized for life in saturated salt lakes and salt evaporation ponds. Others, the barophiles (pressure lovers), colonize the floor of the deepest reaches of the ocean. In 1996, Japanese scientists used a small unmanned submersible to retrieve bottom mud from the Challenger Deep of the Mariana Trench, which at 35,750 feet is the lowest point of the world's oceans. In the samples they discovered hundreds of species of bacteria, archaeans, and fungi. Transferred to the laboratory, some of the bacteria were able to grow at the pressure found in the Challenger Deep, which is a thousand times greater than that near the ocean surface.
The outer reach of physiological resilience of any kind may have been attained by Deinococcus radiodurans, a bacterium that can live through radiation so intense the glass of a Pyrex beaker holding them is cooked to a discolored and fragile state. A human being exposed to 1000 rads of radiation energy, a dose delivered in the atomic explosions at Hiroshima and Nagasaki, dies within one or two weeks. At 1,000 times this amount, 1 million rads, the growth of the Deinococcus is slowed, but all the bacteria still survive. At 1.75 million rads, 37 percent make it through, and even at 3 million rads a very small number still endure. The secret of this superbug is its extraordinary ability to repair broken DNA. All organisms have an enzyme that can replace chromosome parts that have been shorn off, whether by radiation, chemical insult, or accident. The more conventional bacterium Escherichia coli, a dominant inhabitant of the human gut, can repair two or three breaks at one time. The superbug can manage five hundred breaks. The special molecular techniques it uses remain unknown.
Deinococcus radiodurans and its close relatives are not just extremophiles but ultimate generalists and world travelers, having been found, for example, in llama feces, Antarctic rocks, the tissue of Atlantic haddock, and a can of ground pork and beef irradiated by scientists in Oregon. They join a select group, also including cyanobacteria of the genus Chroococcidiopsis, that thrive where very few other organisms venture. They are Earth's outcast nomads, looking for life in all the worst places.
By virtue of their marginality, the superbugs are also candidates for space travel. Microbiologists have begun to ask whether the hardiest among them might drift away from Earth, propelled by stratospheric winds into the void, eventually to settle alive on Mars. Conversely, indigenous microbes from Mars (or beyond) might have colonized Earth. Such is the theory of the origin of life called panspermia, once ridiculed but now an undeniable possibility.
The superbugs have also given a new shot of hope to exobiologists, scientists who look for evidences of life on other worlds. Another stimulus is the newly revealed existence of SLIMEs (subsurface lithoautotrophic microbial ecosystems), unique assemblages of bacteria and fungi that occupy pores in the interlocking mineral grains of igneous rock beneath Earth's surface. Thriving to a depth of up to two miles or more, they obtain their energy from inorganic chemicals. Because they do not require organic particles that filter down from conventional plants and animals whose ultimate energy is from sunlight, the SLIMEs are wholly independent of life on the surface. Consequently, even if all of life as we know it were somehow extinguished, these microscopic troglodytes would carry on. Given enough time, a billion years perhaps, they would likely evolve new forms able to colonize the surface and resynthesize the precatastrophe world run by photosynthesis.
The major significance of the SLIMEs for exobiology is the heightened possibility they suggest of life on other planets and Mars in particular. SLIMEs, or their extraterrestrial equivalent, might live deep within the red planet. During its early, aqueous period Mars had rivers, lakes, and perhaps time to evolve its own surface organisms. According to one recent estimate, there was enough water to cover the entire Martian surface to a depth of five hundred meters. Some, perhaps most, of the water may still exist in permafrost, surface ice covered by the dust we now see from our landers--or, far below the surface, in liquid form. How far below? Physicists believe there is enough heat inside Mars to liquefy water. It comes from a combination of decaying radioactive minerals, some gravitational heat remaining from the original assembly of the planet out of smaller cosmic fragments, and gravitational energy from the sinking of heavier elements and rise of lighter ones. A recent model of the combined effects suggests that the temperature of Mars increases with depth in the upper crustal layers at a rate of 6°F per mile. As a consequence, water could be liquid at eighteen miles beneath the surface. But some water may well up occasionally from the aquifers. In 2000, high-resolution scans by an orbiting satellite revealed the presence of gullies that may have been cut by running streams in the last few centuries or even decades. If Martian life did arise on the planet, or arrived in space particles from Earth, it must include extremophiles, some of which are (or were) ecologically independent single-celled organisms able to persist in or beneath the permafrost.
From the Hardcover edition.
TO THE ENDS OF EARTH
The totality of life, known as the biosphere to scientists and creation to theologians, is a membrane of organisms wrapped around Earth so thin it cannot be seen edgewise from a space shuttle, yet so internally complex that most species composing it remain undiscovered. The membrane is seamless. From Everest's peak to the floor of the Mariana Trench, creatures of one kind or another inhabit virtually every square inch of the planetary surface. They obey the fundamental principle of biological geography, that wherever there is liquid water, organic molecules, and an energy source, there is life. Given the near-universality of organic materials and energy of some kind or other, water is the deciding element on planet Earth. It may be no more than a transient film on grains of sand, it may never see sunlight, it may be boiling hot or supercooled, but there will be some kind of organism living in or upon it. Even if nothing alive is visible to the naked eye, single cells of microorganisms will be growing and reproducing there, or at least dormant and awaiting the arrival of liquid water to kick them back into activity.
An extreme example is the McMurdo Dry Valleys of Antarctica, whose soils are the coldest, driest, and most nutritionally deficient in the world. On first inspection the habitat seems as sterile as a cabinet of autoclaved glassware. In 1903, Robert F. Scott, the first to explore the region, wrote, "We have seen no living thing, not even a moss or lichen; all that we did find, far inland among the moraine heaps, was the skeleton of a Weddell seal, and how that came there is beyond guessing." On all of Earth the McMurdo Dry Valleys most resemble the rubbled plains of Mars.
But the trained eye, aided by a microscope, sees otherwise. In the parched streambeds live twenty species of photosynthetic bacteria, a comparable variety of mostly single-celled algae, and an array of microscopic invertebrate animals that feed on these primary producers. All depend on the summer flow of glacial and icefield meltwater for their annual spurts of growth. Because the paths of the streams change over time, some of the populations are stranded and forced to wait for years, perhaps centuries, for the renewed flush of meltwater. In the even more brutal conditions on bare land away from the stream channels live sparse assemblages of microbes and fungi together with rotifers, bear animalcules, mites, and springtails feeding on them. At the top of this rarefied food web are four species of nematode worms, each specialized to consume different species in the rest of the flora and fauna. With the mites and springtails they are also the largest of the animals, McMurdo's equivalent of elephants and tigers, yet all but invisible to the naked eye.
The McMurdo Dry Valleys's organisms are what scientists call extremophiles, species adapted to live at the edge of biological tolerance. Many populate the environmental ends of Earth, in places that seem uninhabitable to gigantic, fragile animals like ourselves. They constitute, to take a second example, the "gardens" of the Antarctic sea ice. The thick floes, which blanket millions of square miles of ocean water around the continent much of the year, seem forbiddingly hostile to life. But they are riddled with channels of slushy brine in which single-celled algae flourish year-round, assimilating the carbon dioxide, phosphates, and other nutrients that work up from the ocean below. The garden photosynthesis is driven by energy from sunlight penetrating the translucent matrix. As the ice melts and erodes during the polar summer, the algae sink into the water below, where they are consumed by copepods and krill. These tiny crustaceans in turn are the prey of fish whose blood is kept liquid by biochemical antifreezes.
The ultimate extremophiles are certain specialized microbes, including bacteria and their superficially similar but genetically very different relatives the archaeans. (To take a necessary digression: biologists now recognize three domains of life on the basis of DNA sequences and cell structure. They are the Bacteria, which are the conventionally recognized microbes; the Archaea, the other microbes; and the Eukarya, which include the single-celled protists or "protozoans," the fungi, and all of the animals, including us. Bacteria and archaeans are more primitive than other organisms in cell structure: they lack membranes around their nuclei as well as organelles such as chloroplasts and mitochondria.) Some specialized species of bacteria and archaeans live in the walls of volcanic hydrothermal vents on the ocean floor, where they multiply in water close to or above the boiling point. A bacterium found there, Pyrolobus fumarii, is the reigning world champion among the hyperthermophiles, or lovers of extreme heat. It can reproduce at 235°F, does best at 221°F, and stops growing when the temperature drops to a chilly 194°F. This extraordinary feat has prompted microbiologists to inquire whether even more advanced, ultrathermophiles exist, occupying geothermal waters at 400°F or even higher. Watery environments with temperatures that hot exist. The submarine spumes close to the Pyrolobus fumarii bacterial colonies reach 660°F. The absolute upper limit of life as a whole, bacteria and archaeans included, is thought to be about 300°F, at which point organisms cannot sustain the integrity of DNA and the proteins on which known forms of life depend. But until the search for ultrathermophiles, as opposed to mere hyperthermophiles, is exhausted, no one can say for certain that these intrinsic limits actually exist.
During more than three billion years of evolution, the bacteria and archaeans have pushed the boundaries in other dimensions of physiological adaptation. One species, an acid lover (acidophile), flourishes in the hot sulfur springs of Yellowstone National Park. At the opposite end of the pH scale, alkaliphiles occupy carbonate-laden soda lakes around the world. Halophiles are specialized for life in saturated salt lakes and salt evaporation ponds. Others, the barophiles (pressure lovers), colonize the floor of the deepest reaches of the ocean. In 1996, Japanese scientists used a small unmanned submersible to retrieve bottom mud from the Challenger Deep of the Mariana Trench, which at 35,750 feet is the lowest point of the world's oceans. In the samples they discovered hundreds of species of bacteria, archaeans, and fungi. Transferred to the laboratory, some of the bacteria were able to grow at the pressure found in the Challenger Deep, which is a thousand times greater than that near the ocean surface.
The outer reach of physiological resilience of any kind may have been attained by Deinococcus radiodurans, a bacterium that can live through radiation so intense the glass of a Pyrex beaker holding them is cooked to a discolored and fragile state. A human being exposed to 1000 rads of radiation energy, a dose delivered in the atomic explosions at Hiroshima and Nagasaki, dies within one or two weeks. At 1,000 times this amount, 1 million rads, the growth of the Deinococcus is slowed, but all the bacteria still survive. At 1.75 million rads, 37 percent make it through, and even at 3 million rads a very small number still endure. The secret of this superbug is its extraordinary ability to repair broken DNA. All organisms have an enzyme that can replace chromosome parts that have been shorn off, whether by radiation, chemical insult, or accident. The more conventional bacterium Escherichia coli, a dominant inhabitant of the human gut, can repair two or three breaks at one time. The superbug can manage five hundred breaks. The special molecular techniques it uses remain unknown.
Deinococcus radiodurans and its close relatives are not just extremophiles but ultimate generalists and world travelers, having been found, for example, in llama feces, Antarctic rocks, the tissue of Atlantic haddock, and a can of ground pork and beef irradiated by scientists in Oregon. They join a select group, also including cyanobacteria of the genus Chroococcidiopsis, that thrive where very few other organisms venture. They are Earth's outcast nomads, looking for life in all the worst places.
By virtue of their marginality, the superbugs are also candidates for space travel. Microbiologists have begun to ask whether the hardiest among them might drift away from Earth, propelled by stratospheric winds into the void, eventually to settle alive on Mars. Conversely, indigenous microbes from Mars (or beyond) might have colonized Earth. Such is the theory of the origin of life called panspermia, once ridiculed but now an undeniable possibility.
The superbugs have also given a new shot of hope to exobiologists, scientists who look for evidences of life on other worlds. Another stimulus is the newly revealed existence of SLIMEs (subsurface lithoautotrophic microbial ecosystems), unique assemblages of bacteria and fungi that occupy pores in the interlocking mineral grains of igneous rock beneath Earth's surface. Thriving to a depth of up to two miles or more, they obtain their energy from inorganic chemicals. Because they do not require organic particles that filter down from conventional plants and animals whose ultimate energy is from sunlight, the SLIMEs are wholly independent of life on the surface. Consequently, even if all of life as we know it were somehow extinguished, these microscopic troglodytes would carry on. Given enough time, a billion years perhaps, they would likely evolve new forms able to colonize the surface and resynthesize the precatastrophe world run by photosynthesis.
The major significance of the SLIMEs for exobiology is the heightened possibility they suggest of life on other planets and Mars in particular. SLIMEs, or their extraterrestrial equivalent, might live deep within the red planet. During its early, aqueous period Mars had rivers, lakes, and perhaps time to evolve its own surface organisms. According to one recent estimate, there was enough water to cover the entire Martian surface to a depth of five hundred meters. Some, perhaps most, of the water may still exist in permafrost, surface ice covered by the dust we now see from our landers--or, far below the surface, in liquid form. How far below? Physicists believe there is enough heat inside Mars to liquefy water. It comes from a combination of decaying radioactive minerals, some gravitational heat remaining from the original assembly of the planet out of smaller cosmic fragments, and gravitational energy from the sinking of heavier elements and rise of lighter ones. A recent model of the combined effects suggests that the temperature of Mars increases with depth in the upper crustal layers at a rate of 6°F per mile. As a consequence, water could be liquid at eighteen miles beneath the surface. But some water may well up occasionally from the aquifers. In 2000, high-resolution scans by an orbiting satellite revealed the presence of gullies that may have been cut by running streams in the last few centuries or even decades. If Martian life did arise on the planet, or arrived in space particles from Earth, it must include extremophiles, some of which are (or were) ecologically independent single-celled organisms able to persist in or beneath the permafrost.
From the Hardcover edition.
Recenzii
“Wilson, perhaps our greatest living scientist . . . offers the most powerful indictment yet of humanity as destroyer.” –San Francisco Chronicle Observer
“His book eloquently makes one thing clear: . . . we know what we do, and we have a choice.” –The New York Times Book Review
“The Future of Life makes it clear once again that Wilson is one of our most gifted science writers.” –The Washington Post
“[An] elegant manifesto. . . . [A] nuanced and evocative explanation of just why biodiversity matters.” –The New Yorker
“Wilson writes with a magisterial tone. . . . The Future of Life is the work of a man with deep convictions who is also utterly reasonable.” –Bill McKibben, The Boston Globe
“A critical report card for planet Earth, an urgent manifesto on global action, an eloquent plea . . . A literate, even poetic recounting of current scientific information that is readily accessible to lay readers. A more engaging and persuasive single volume on this crucial subject is difficult to imagine.” –Seattle Post-Intelligencer
“A no-nonsense appraisal of the problem of species extinctions and a pragmatic road map for renewal. . . . The Future of Life takes the reader on a fascinating and ultimately hopeful journey.” –San José Mercury News
“Our contemporary Thoreau, Wilson elegantly and insistently makes the case that to choose biodiversity is to choose survival.” –Atlanta Journal-Constitution
“Wilson knows his subject too well. It behooves the rest of us to listen.” –San Diego Union Tribune
“One of the most clear-eyed pictures of how bad things have gotten.”–Minneapolis Star-Tribune
“The Future of Life offers an encouraging vision that solutions to the environmental problems facing humanity are within reach. . . . A refreshing change from the doom-and-gloom rhetoric that marked much environmentalism in the past.”–American Scientist
“A landmark new book.” –Houston Chronicle
“The biosphere’s Paul Revere defines the incalculable value and fragility of ‘the totality of life.’” –Outside
“Wilson is a member of an important but very rare species: the world-class scientist who is also a great writer.” –Nature
“A short book of breathtaking scope. . . . Wilson brings genuine authority to these weighty pronouncements.”–New York Observer
“[A] readable gem. . . . Wilson manages to avoid dark gloom while still cataloguing the damage we have wrought.” –Toronto Star
“Takes the reader on a fascinating and ultimately hopeful journey. . . . A concise primer remarkable in its breadth and clarity.”–Austin American-Statesman
“His book eloquently makes one thing clear: . . . we know what we do, and we have a choice.” –The New York Times Book Review
“The Future of Life makes it clear once again that Wilson is one of our most gifted science writers.” –The Washington Post
“[An] elegant manifesto. . . . [A] nuanced and evocative explanation of just why biodiversity matters.” –The New Yorker
“Wilson writes with a magisterial tone. . . . The Future of Life is the work of a man with deep convictions who is also utterly reasonable.” –Bill McKibben, The Boston Globe
“A critical report card for planet Earth, an urgent manifesto on global action, an eloquent plea . . . A literate, even poetic recounting of current scientific information that is readily accessible to lay readers. A more engaging and persuasive single volume on this crucial subject is difficult to imagine.” –Seattle Post-Intelligencer
“A no-nonsense appraisal of the problem of species extinctions and a pragmatic road map for renewal. . . . The Future of Life takes the reader on a fascinating and ultimately hopeful journey.” –San José Mercury News
“Our contemporary Thoreau, Wilson elegantly and insistently makes the case that to choose biodiversity is to choose survival.” –Atlanta Journal-Constitution
“Wilson knows his subject too well. It behooves the rest of us to listen.” –San Diego Union Tribune
“One of the most clear-eyed pictures of how bad things have gotten.”–Minneapolis Star-Tribune
“The Future of Life offers an encouraging vision that solutions to the environmental problems facing humanity are within reach. . . . A refreshing change from the doom-and-gloom rhetoric that marked much environmentalism in the past.”–American Scientist
“A landmark new book.” –Houston Chronicle
“The biosphere’s Paul Revere defines the incalculable value and fragility of ‘the totality of life.’” –Outside
“Wilson is a member of an important but very rare species: the world-class scientist who is also a great writer.” –Nature
“A short book of breathtaking scope. . . . Wilson brings genuine authority to these weighty pronouncements.”–New York Observer
“[A] readable gem. . . . Wilson manages to avoid dark gloom while still cataloguing the damage we have wrought.” –Toronto Star
“Takes the reader on a fascinating and ultimately hopeful journey. . . . A concise primer remarkable in its breadth and clarity.”–Austin American-Statesman
Cuprins
List of Endangered and Extinct Species and Races
Prologue: A Letter to Thoreau
Chapter One: TO THE ENDS OF EARTH
Chapter Two: THE BOTTLENECK
Chapter Three: NATURE’S LAST STAND
Chapter Four: THE PLANETARY KILLER
Chapter Five: HOW MUCH IS THE BIOSPHERE WORTH?
Chapter Six: FOR THE LOVE OF LIFE
Chapter Seven: THE SOLUTION
Notes
Glossary
Acknowledgments
Index
Prologue: A Letter to Thoreau
Chapter One: TO THE ENDS OF EARTH
Chapter Two: THE BOTTLENECK
Chapter Three: NATURE’S LAST STAND
Chapter Four: THE PLANETARY KILLER
Chapter Five: HOW MUCH IS THE BIOSPHERE WORTH?
Chapter Six: FOR THE LOVE OF LIFE
Chapter Seven: THE SOLUTION
Notes
Glossary
Acknowledgments
Index
Descriere
From preeminent scientist and two-time Pulitzer Prize-winning author Wilson comes his most important book to date--a thoroughly documented assessment of the dismal state of our biosphere and a vision for a more hopeful future.
Premii
- ALA Notable Books Winner, 2003