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Half-Earth: Our Planet's Fight for Life Hardcover – Illustrated, March 7, 2016
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Half-Earth proposes an achievable plan to save our imperiled biosphere: devote half the surface of the Earth to nature.
In order to stave off the mass extinction of species, including our own, we must move swiftly to preserve the biodiversity of our planet, says Edward O. Wilson in his most impassioned book to date. Half-Earth argues that the situation facing us is too large to be solved piecemeal and proposes a solution commensurate with the magnitude of the problem: dedicate fully half the surface of the Earth to nature.
If we are to undertake such an ambitious endeavor, we first must understand just what the biosphere is, why it's essential to our survival, and the manifold threats now facing it. In doing so, Wilson describes how our species, in only a mere blink of geological time, became the architects and rulers of this epoch and outlines the consequences of this that will affect all of life, both ours and the natural world, far into the future.
Half-Earth provides an enormously moving and naturalistic portrait of just what is being lost when we clip "twigs and eventually whole braches of life's family tree." In elegiac prose, Wilson documents the many ongoing extinctions that are imminent, paying tribute to creatures great and small, not the least of them the two Sumatran rhinos whom he encounters in captivity. Uniquely, Half-Earth considers not only the large animals and star species of plants but also the millions of invertebrate animals and microorganisms that, despite being overlooked, form the foundations of Earth's ecosystems.
In stinging language, he avers that the biosphere does not belong to us and addresses many fallacious notions such as the idea that ongoing extinctions can be balanced out by the introduction of alien species into new ecosystems or that extinct species might be brought back through cloning. This includes a critique of the "anthropocenists," a fashionable collection of revisionist environmentalists who believe that the human species alone can be saved through engineering and technology.
Despite the Earth's parlous condition, Wilson is no doomsayer, resigned to fatalism. Defying prevailing conventional wisdom, he suggests that we still have time to put aside half the Earth and identifies actual spots where Earth's biodiversity can still be reclaimed. Suffused with a profound Darwinian understanding of our planet's fragility, Half-Earth reverberates with an urgency like few other books, but it offers an attainable goal that we can strive for on behalf of all life.
25 illustrations- Print length272 pages
- LanguageEnglish
- PublisherLiveright
- Publication dateMarch 7, 2016
- Dimensions6.5 x 1 x 9.6 inches
- ISBN-101631490826
- ISBN-13978-1631490828
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In a book that I’m going to call “required reading” for everyone within the sound of my voice, Wilson discusses the premise that a huge variety of life-forms on Earth still remain largely unknown to science and that the species discovered and studied well enough to assess, notably the vertebrae animals and flowering plants, are declining in number at an accelerating rate—due almost entirely to human activity. In response to this premise, Wilson very succinctly states: “The global conservation movement has temporarily mitigated but hardly stopped the on-gong extinction of species. The rate of loss is instead accelerating. If biodiversity is to be returned to the baseline level of extinction that existed before the spread of humanity, and thus saved for future generations, the conservation effort must be raised to a new level. The only solution to the “Sixth Extinction” is to increase the area of inviolable natural reserves to half the surface of the Earth or greater. This expansion is favored by unplanned consequences of ongoing human population growth and movement and evolution of the economy now driven by the digital revolution. But it also requires a fundamental shift in moral reasoning concerning our relation to the living environment.”
The hook-line phrase in the above paragraph is “increase the area of inviolable natural reserves (ie Wilderness designated land reserves) to HALF the surface of the Earth,” hence echoing the book’s title. Half of our planet saved as Wilderness or wildlands seems an awful lot given the shrinking size of the planet due to global markets, global population statistics and the internet and social media, but after reading Wilson’s compilation of facts and figures and prescient logic, one can only agree with his compassionate analysis and fears for the future of all species, including humans. His omniscient observations and study of species extinction hit hard and very close to home as he cites our own Great Smoky Mountains National Park as his primary referent example. “It is instructive to proceed to the Great Smoky Mountains National Park, one of the best-studied American reserves, and to reflect briefly on the breakdown of the numbers of known species in each group of organisms. The actual number of recorded species in the Park, especially when all suspected but still unrecorded transient species and microorganisms are added, has been estimated to lie between sixty thousand and eighty thousand,” says Wilson. Very impressive numbers, these are, and those of us living in these western North Carolina mountains are so lucky to be living in such a diverse neighborhood. Yet, we should be humbled by such numbers, or as Wilson goes on to say: “The wildlands (such as the Great Smoky Mountains National Park) and the bulk of Earth’s biodiversity protected within them are another world from the one humanity is throwing together pell-mell. What do we receive from them? The stabilization of the global environment they provide and their very existence are the gifts they give to us. We are their stewards, not their owners. These wildlands of the world are not art museums. They are not gardens to be arranged and tended for our delectation. They are not recreation centers or harborers of natural resources or sanatoriums or undeveloped sites of business opportunities.”
Going further abroad, and contrary to national news sources, Wilson cites places such as the Middle East and that region’s problems of biodiversity sustainability. “In the Middle East, it is becoming clear that hatred and instability are not due so much to religious differences and the memories of historical injustice as they are to overpopulation and the severe shortage of arable lands and water.” As the saying goes “the devil is in the details” and Wilson’s layman-friendly book is full of scientific evidence to support his predictions as well as his solutions to this very real and urgent global crisis we all seem to be ignoring, at our own peril.
Wilson is not alone with his convincing data and his dire predictions. Many esteemed scientists, economists, social scientists, artists and politicians world-wide agree with Wilson’s findings and predictions that we are, indeed, in the 12th round of this environmental prize-fight. And the prize? It is the very Earth itself and our continued existence upon it. Or as Wilson concludes in his ending chapter “The Solution”: “The pivotal conclusion to be drawn remains forever the same: by destroying most of the biosphere with archaic short-term methods, we are setting ourselves up for a self-inflicted disaster. Across eons the diversity of species has created ecosystems that provide a maximum level of stability. Climate changes and uncontrollable catastrophes from earthquakes, volcanic eruptions, and asteroid strikes have thrown nature off balance, but in relatively short geologic periods of time, the damage was repaired—due to the great variety and resilience of the life-forms on Earth. Finally, during the current Earth period, Earth’s shield of biodiversity is being shattered and the pieces are being thrown away. In its place is being inserted only the promise that all can be solved by human ingenuity. Some hope we can take over the controls, monitor the sensors, and push the right buttons to run Earth the way we choose. In response, all the rest of us should be asking: Can the planet be run as a true spaceship by one intelligent species? Surely we would be foolish to take such a large and dangerous gamble. There is nothing our scientists and political leaders can do to replace the still-unimaginable complex of niches and the interactions of the millions of species that fill them. If we try, as we seem determined to do, and then even if we succeed to some extent, remember we won’t be able to go back. The result will be irreversible. We have only one planet and we are allowed only one such experiment. Why make a world-threatening and unnecessary gamble if a safe option is open?”
Wilson’s option: INCREASE THE AREA OF NATURAL WILDERNESS TO ONE HALF THE SURFACE OF THE EARTH!
It seems EO Wilson has been around for as long as God. (Some biologists think he is God.) Actually, he’ll be 89 this year and this book is a cri de couer. He feels the only way to save the species of the world from the sixth mass extinction is to put aside half the Earth’s surface as nature reserves.
EO Wilson has sufficient credibility to be the one to put such a radical idea forward. He has won the Pulitzer Prize, not once but twice, for his books On Human Nature (1978) and The Ants (1990). While the world’s foremost authority on ants, he has an extensive knowledge of biology. Many of us still have his 1992 tome, The Diversity of Life, on our shelves in which Wilson was already addressing the massive species extinctions taking place in the 20th century, ones caused by human activities.
The dodo is the classic case. It fitted with the first rule of extinction biology: “the first to fall are the slow, the dumb and the tasty”. The poor dodo – fat, earthbound and fearless – evolved on Mauritius in the absence of humans but succumbed to Dutch sailors who had first arrived on the island in 1598.
Humans, on the other hand, can be the very ones to save from extinction those species threatened by human activity. The four remaining Mauritian kestrels, for instance, were captured in 1974 and kept in captivity until numbers had risen sufficiently to be released back into the wild. Indeed, the concept of humans as potential saviours – as well as destroyers – lies at the heart of this book.
Wilson reminds us that conservation biologists use the acronym HIPPO to describe the worst of extinction-causing human activities:
• Habitat destruction
• Invasive species
• Pollution
• Population growth, and
• Overhunting.
Wilson makes the point that, in most extinctions, the causes are multiple and linked, but all related to human activity. For instance, the Allegheny woodrat is endangered through a third of its range because of the extinction of the American chestnut, the seeds of which the woodrat fed on. Added to that was the reduction of habitat by logging and fragmentation of the forests, then invasion of the European gypsy moth, followed by roundworm infection from raccoons.
Human activity is one thing but Wilson is sometimes a bit coy about population numbers per se. He notes that human consumption is likely to rise even more than population numbers by the end of the century. “Unless the right technology is brought to bear that greatly improves efficiency and productivity per unit area, there will be a continued increase in humanity’s ecological footprint…” Later in the book he writes a great deal about new technologies, such as artificial intelligence and the digital revolution, and clearly hopes that these will offset those increases in human numbers and resource use.
So how do we achieve this massive project of allocating half the Earth for nature reserves such that other species might survive and thrive? There are, of course, existing wildernesses that will continue to endure if left alone. Others need restoration. One philanthropist who, through a knowledge and love of his local habitat, as well as courage and persistence, restored his local landscape by bringing back a keystone species earlier destroyed by human activity. MC Davis discovered that the woodlands of the Florida Panhandle were in a seriously degraded condition, largely because of the disappearance of the longleaf pine (Pinus palustris). Because its lumber is of high quality, it had been overharvested after the Civil War. Trees and understorey that came in its place were more susceptible to fire, leading to full-blown wildfires. Davis bought up large tracts of the degraded land, put them into a permanent conservation trust, cleared the land and planted a million longleaf seedlings. The original understorey returned as the longleaf pines grew and the ecosystem restored.
The flaw in this otherwise highly worthy book is that Wilson does not build on this excellent example and tell us how restoration of habitat might be achieved over half the Earth. How do we stop all of the biologically rich island of Borneo being turned over to palm oil plantations, for instance? Half-Earth is a splendid concept and probably the only way we can stop the sixth mass extinction, but we deserve more detail from the author on how we might actually achieve it.
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