Chris D. Thomas (Photo: Allen Lane)
IV. Vive la bio-révolution!
According to Chris D. Thomas, we are today in the midst of a great global interchange; a biological coming together, facilitated by humanity, of previously separated species which will conceivably be "the greatest spur to evolution for a hundred or more million years" [169]. Speciation seems to be unfolding in front of us at a pace that Darwin would have found unimaginable, although, of course, the real proliferation of new species will come in a far-distant future.
In another crucially important passage, Thomas writes:
"These new connections are unlike any previous period in the Earth's history. The explosion that killed off the dinosaurs, and the other four major episodes of mass extinction in the last half-billion years, did not transport vast numbers of the survivors around the planet on a timescale of hundreds to thousands of years. There was no equivalent bringing together of species from different regions. ... Given the geographic distances and rapidity of connections that are taking place in the Anthropocene, there is no precedent since multi-cellular life forms colonized the land." [195-96]
He concludes:
"I find it difficult to imagine a period in the entire history of terrestrial life on Earth when the speed of origination of new evolutionary lineages could have been faster, as a result of the combined forces of populations arriving in new locations and starting to diverge there, the previous residents becoming adapted to the new species that arrive, and new hybrids coming into existence as species meet up for the first time in new habitats and new geographic locations." [196]
In brief: the human era is undoubtedly a time of unusually rapid extinction. But, ultimately, the Anthropocene bio-revolution will almost certainly represent a bright new dawn.
V. On Translating Man Back into Nature
The idealistic separation of man from nature continues to this day, despite the fact that Darwin published his theory of evolution over 150 years ago. Even some philosophers and scientists who really should know better, still insist on the myth of human exceptionalism and regard human abilities and activity as, in some sense, either unnatural or transcendent. Thomas, to his credit, is having none of this:
"When we contemplate the biology and impacts of humans on the Earth, there is no doubting that Homo sapiens is an extremely unusual animal. But at what point in the unbroken sequence of generations should we decide that humans ceased to be part of nature ... There is no scientific or philosophical justification that could be used to separate this continuum of ape-then-human animals into two qualitatively different categories." [207]
Evolution has been going on long enough so that humans and chimpanzees are recognisably different; but we are still primates, just like them, and whilst it is man who exercises dominion over the Earth, this is still essentially the planet of the apes. And everything that happens upon it - including art, agriculture and architecture - is absolutely natural and represents an "indirect product of evolution" [209].
Indeed, even our anthropocentrism has an evolutionary basis; for this will to species self-privileging is shared with other animals: lions, bison, and killer whales, for example, "respond strongly to other members of their own species for exactly the same reasons" [210] we do. When they see others of their own kind, they see potential mates, family members, collaborators, enemies, etc. "Every species is special to itself because the survival of each individual's genes depend on it." [210]
However, whilst evolutionary predisposition encourages us to develop ideas of human uniqueness, it's important to recognise that we are still just animals and that "everything we do ... is natural" [211].
VI. Welcome to Anthropocene Park
Finally, we arrive at the last chapter of Thomas's book, entitled 'Noah's Earth'. Here, and in the Epilogue that follows, he speculates on what we might do today and how the world might look one million years from now. Different, is the answer to the latter question. But difference and becoming isn't something that has been engineered by man. It's built into the very fabric of the universe, including biology.
What we need, therefore, is an environmental philosophy that is based on an acknowledgement of change and the further recognition that change is something beyond good and evil regardless of whether the consequences are beneficial or harmful to human well-being and survival (although, obviously, we will want things to turn out for the best and it's perfectly legitimate for man to attempt to direct life's unfolding in "a desired direction as effectively and efficiently as possible" [230], eradicating deadly new diseases, for example).
As part of this new philosophy, Thomas thinks it worth considering radical conservation projects that don't just try to save a limited number of endangered species in their present location, but dare to move them to new places where they might thrive, just like the yellow-crested cockatoo, for example, which is thriving in Hong Kong, even as it continues a rapid decline in its Indonesian homeland:
"All the many thousands of transported plants and animals that have established populations in new regions have demonstrated time and again that species may flourish outside their historical ranges. In doing so, they normally increase the total number of species that live in each region, they start to evolve into distinct forms and they sometimes hybridize and create new species. Eventually, they will increase the diversity of life on Earth." [235]
And, in the meantime, it means we might get to see African lions hunting in the USA and black rhinos stomping about in Europe. I'm all for that and all for thinking about the creation of new ecosystems and biological communities - including communities made up of deliberately engineered new species (or even extinct species resurrected).
Ultimately, I agree entirely with Professor Thomas that we shouldn't allow those who worry about Frankenstein science prevent us from using all available means to maintain and increase biological diversity in a variety ways that many puritans would regard as not only unconventional, but unnatural and immoral.
Indeed, even our anthropocentrism has an evolutionary basis; for this will to species self-privileging is shared with other animals: lions, bison, and killer whales, for example, "respond strongly to other members of their own species for exactly the same reasons" [210] we do. When they see others of their own kind, they see potential mates, family members, collaborators, enemies, etc. "Every species is special to itself because the survival of each individual's genes depend on it." [210]
However, whilst evolutionary predisposition encourages us to develop ideas of human uniqueness, it's important to recognise that we are still just animals and that "everything we do ... is natural" [211].
VI. Welcome to Anthropocene Park
Finally, we arrive at the last chapter of Thomas's book, entitled 'Noah's Earth'. Here, and in the Epilogue that follows, he speculates on what we might do today and how the world might look one million years from now. Different, is the answer to the latter question. But difference and becoming isn't something that has been engineered by man. It's built into the very fabric of the universe, including biology.
What we need, therefore, is an environmental philosophy that is based on an acknowledgement of change and the further recognition that change is something beyond good and evil regardless of whether the consequences are beneficial or harmful to human well-being and survival (although, obviously, we will want things to turn out for the best and it's perfectly legitimate for man to attempt to direct life's unfolding in "a desired direction as effectively and efficiently as possible" [230], eradicating deadly new diseases, for example).
As part of this new philosophy, Thomas thinks it worth considering radical conservation projects that don't just try to save a limited number of endangered species in their present location, but dare to move them to new places where they might thrive, just like the yellow-crested cockatoo, for example, which is thriving in Hong Kong, even as it continues a rapid decline in its Indonesian homeland:
"All the many thousands of transported plants and animals that have established populations in new regions have demonstrated time and again that species may flourish outside their historical ranges. In doing so, they normally increase the total number of species that live in each region, they start to evolve into distinct forms and they sometimes hybridize and create new species. Eventually, they will increase the diversity of life on Earth." [235]
And, in the meantime, it means we might get to see African lions hunting in the USA and black rhinos stomping about in Europe. I'm all for that and all for thinking about the creation of new ecosystems and biological communities - including communities made up of deliberately engineered new species (or even extinct species resurrected).
Ultimately, I agree entirely with Professor Thomas that we shouldn't allow those who worry about Frankenstein science prevent us from using all available means to maintain and increase biological diversity in a variety ways that many puritans would regard as not only unconventional, but unnatural and immoral.
See: Chris D. Thomas, Inheritors of the Earth: How Nature is Thriving in an Age of Extinction, (Allen Lane, 2017). All the page numbers given above refer to this edition of the book.
