I. Extinction isn't the End of the World and Change is the Only Constant
Professor Chris D. Thomas is an ecologist and evolutionary biologist at the University of York who has written a book that lends scientific support to Rupert Birkin's vision in Women in Love of a far-off future in which biological diversity is even greater than it is now and unimaginable new species of life will have unfolded. Of course, Thomas doesn't share Birkin's misanthropy and long for a world free of humanity, but he does affirm that evolution never ends and that there is thus an infinite array of lovely things still to come (after - but also out of - the Anthropocene period).
Thomas begins by setting out a familiar tale of woe concerning the negative effect that mankind is said to have had on the Earth. Whilst conceding the importance of recognising ways in which human activity threatens the existence of life, he quickly counters this doom-laden narrative of eco-apocalypse and suggests we take a broader view, considering all the evidence and not just those facts that reinforce the moral and political concerns of those who subscribe to a green philosophy based on a desire to save the planet.
Essentially, Thomas is arguing that short-term ecological upheaval and species extinction pales into insignificance when seen from the perspective of evolution. Ultimately, no matter how great the losses, there will be winners; that is to say, species that will not only survive, but thrive; not only thrive, but diversify into an unimaginable variety of new species. Periods when the levels of extinction are high - as they are presently - obviously present setbacks; "but in the end they have provided new opportunities for enterprising creatures that have been able to exploit the new conditions" [7]. Come back in a million years, says Thomas, and you're likely to be astonished at what you'll find.
We might not like it, but never-ending change is the only constant; the world is in a state of permanent flux. Futile attempts to conserve the world as it is - or, even more vainly, to restore it to some earlier, more pristine, more natural state - are not only untenable, but "implicitly dismiss as undesirable the continuing biological gains of the human epoch" [8]. Further, the logic of such a way of thinking can have ugly consequences, such as the call to eradicate alien arrivals and exterminate impure hybrids. Rather than "swim against the tide of ecological and evolutionary change" [9], writes Thomas, we should go with the flow and joyfully facilitate and accelerate biological processes.
II. The Future Walks Among Us
Just to be clear: Thomas isn't arguing that we shouldn't, for example, try to prevent unsustainable fishing and the dumping of plastic into the oceans. But, we need to open our eyes to the evolutionary reality of the world and acknowledge biological gains made. It can also be strangely comforting to realise that we can glimpse the future within the present; that the "inheritors of the future Earth are already among us today" [43], just as birds and mammals were coexistent with the dinosaurs for millions of years and did not "suddenly appear after the asteroid hit" [41] (an idea that greater knowledge of the fossil record plus revolutionary advances in molecular biology has shown to be false).
These inheritors, as Thomas calls them, might not be the wild and charismatic megafauna that most people worry about (tigers, gorillas, pandas, polar bears, etc.), but we should probably get over our sentimental privileging of such beasts and recognise that domestic animals and household pets - as well as cereal crops - have all been incredibly successful by taking advantage of "a gullible primate" [45] in order to ensure their survival and global proliferation.
It's a Lawrentian nightmare, but there are now about 1.5 billion cattle, 1.2 billion sheep, 1 billion pigs and an astonishing 22 billion chickens in the world, all being fed and cared for in addition to the 1 billion cats and dogs, by 7 billion human beings. In other words, "the present is not a dip in the total numbers or combined weight [biomass] of large animals ... it is a substantial increase" [47] and the Anthropocene remains "just as much an age of mammals and birds as it ever was" [47].
Thomas concludes that "it's time to stop yearning for a pristine, wild world ... [as] there is no longer any such thing as human-free nature" [53] and we cannot reverse time. Besides, many species of large non-domestic animal are recovering in number and returning to their former lands; bears, bison, wolves, deer, boar, etc. Such recoveries seem likely to become more widespread (albeit within human-managed spaces) and the chances are "there will be considerably more large wild mammals in existence one hundred years from now than there are today" [51].
III. On Accelerated Evolution
Ecological transformation is one thing; evolutionary change is something else - something, in the long run, far more fundamental. Evolution, as Thomas says, is how life on Earth responds to and recovers from natural disasters, including periods of mass extinction.
People often parrot the phrase sixth extinction and like to blame humanity for it. But perhaps we should also consider whether this will in turn trigger a new flourishing of life. Thomas certainly seems to think so. Further, he argues that new species are already "coming into existence with immodest haste, adapting to new conditions" [118] - such as the Italian sparrow.
In a crucial passage, he continues:
"Remarkable as it might seem, new plant species may be coming into existence faster today than at any time in the history of our planet. A new era has arrived in which we see an acceleration of evolutionary change and the genesis of new life-forms. Given that many of them would not exist but for humans, they challenge us to contemplate the relationship between humanity and nature." [118]
We should abandon our human (all too human) guilt about our place in the world and our influence upon it. We should abandon also our privileging of old species over new and the mad desire to save everything. Life doesn't need saving, it needs accelerating and diversifying and the rapid evolution taking place not just in plants, but in animals, fungi and microbes, is something to marvel at.
"Great replacements have frequently been at the heart of large-scale and long-term evolutionary change ..." [140] and rather than always try to conserve things and weeping over the creatures that disappear into the void, we might seek to "build new biological communities composed of compatible species so that future ecosystems are more robust than those that currently exist" [126].
See: Chris D. Thomas, Inheritors of the Earth: How Nature is Thriving in an Age of Extinction (Allen Lane, 2017).
II. The Future Walks Among Us
Just to be clear: Thomas isn't arguing that we shouldn't, for example, try to prevent unsustainable fishing and the dumping of plastic into the oceans. But, we need to open our eyes to the evolutionary reality of the world and acknowledge biological gains made. It can also be strangely comforting to realise that we can glimpse the future within the present; that the "inheritors of the future Earth are already among us today" [43], just as birds and mammals were coexistent with the dinosaurs for millions of years and did not "suddenly appear after the asteroid hit" [41] (an idea that greater knowledge of the fossil record plus revolutionary advances in molecular biology has shown to be false).
These inheritors, as Thomas calls them, might not be the wild and charismatic megafauna that most people worry about (tigers, gorillas, pandas, polar bears, etc.), but we should probably get over our sentimental privileging of such beasts and recognise that domestic animals and household pets - as well as cereal crops - have all been incredibly successful by taking advantage of "a gullible primate" [45] in order to ensure their survival and global proliferation.
It's a Lawrentian nightmare, but there are now about 1.5 billion cattle, 1.2 billion sheep, 1 billion pigs and an astonishing 22 billion chickens in the world, all being fed and cared for in addition to the 1 billion cats and dogs, by 7 billion human beings. In other words, "the present is not a dip in the total numbers or combined weight [biomass] of large animals ... it is a substantial increase" [47] and the Anthropocene remains "just as much an age of mammals and birds as it ever was" [47].
Thomas concludes that "it's time to stop yearning for a pristine, wild world ... [as] there is no longer any such thing as human-free nature" [53] and we cannot reverse time. Besides, many species of large non-domestic animal are recovering in number and returning to their former lands; bears, bison, wolves, deer, boar, etc. Such recoveries seem likely to become more widespread (albeit within human-managed spaces) and the chances are "there will be considerably more large wild mammals in existence one hundred years from now than there are today" [51].
III. On Accelerated Evolution
Ecological transformation is one thing; evolutionary change is something else - something, in the long run, far more fundamental. Evolution, as Thomas says, is how life on Earth responds to and recovers from natural disasters, including periods of mass extinction.
People often parrot the phrase sixth extinction and like to blame humanity for it. But perhaps we should also consider whether this will in turn trigger a new flourishing of life. Thomas certainly seems to think so. Further, he argues that new species are already "coming into existence with immodest haste, adapting to new conditions" [118] - such as the Italian sparrow.
In a crucial passage, he continues:
"Remarkable as it might seem, new plant species may be coming into existence faster today than at any time in the history of our planet. A new era has arrived in which we see an acceleration of evolutionary change and the genesis of new life-forms. Given that many of them would not exist but for humans, they challenge us to contemplate the relationship between humanity and nature." [118]
We should abandon our human (all too human) guilt about our place in the world and our influence upon it. We should abandon also our privileging of old species over new and the mad desire to save everything. Life doesn't need saving, it needs accelerating and diversifying and the rapid evolution taking place not just in plants, but in animals, fungi and microbes, is something to marvel at.
"Great replacements have frequently been at the heart of large-scale and long-term evolutionary change ..." [140] and rather than always try to conserve things and weeping over the creatures that disappear into the void, we might seek to "build new biological communities composed of compatible species so that future ecosystems are more robust than those that currently exist" [126].
See: Chris D. Thomas, Inheritors of the Earth: How Nature is Thriving in an Age of Extinction (Allen Lane, 2017).
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