For most of this book the author is cautiously hopeful that the destruction caused by human and natural disasters is remediable, that when left alone nature can fix what has been broken: barren soil is recolonized by plants and animals, forests regenerate, toxins break down; life finds a way. And then, in the last chapter, the reader is brought up short with the message the world may indeed heal itself, but it might take the the self-extermination of mankind to make it happen, a path we are already far along on. And if it happens we will take a hell of a lot of other species with us when we go.
There is a sad irony in many of the chapters of this book, that only after we have screwed things up so badly that the land or water becomes useless (to us), then can Mother Nature get started restoring things. It reminded me of the situation report from the Vietnam war, “We had to destroy the village to save it.”
The author has a good eye for regeneration, identifying the plant and animal species that make the first tentative steps toward reclamation, increasing the viability of the soil and laying the groundwork for later arrivals to help establish a robust ecology. Although she does not call it homeostasis, evolutionary change, climate conditions, and competing species tend to maintain equilibrium as the landscape is renewed.
One chapter deals with effects of introduced plants in Africa, breaking out of their initial planting sites to run wild, outcompeting local species and destroying the balance of the forests. However, over time they start to be tamed by the local environment: they spread more slowly, and parasites and diseases begin to catch up to them. Eventually they melt into their environment as just another part of the whole. It made me think about Killer Bees; as they were making their way north toward the United States there were endless apocalyptic stories about how they were going to take over, destroying the honeybees and indiscriminately killing people and pets. After all that, now that have arrived they have become a kind of low level chronic condition, making the news only when an unfortunate incident results in someone being attacked.
The author visited Chernobyl to examine the long term effects of the disaster, and provides some helpful statistics to put things into perspective: “Chernobyl is the most contaminated site of all. Though the explosion at its fourth reactor had only a fraction of the force of the atomic bomb dropped on Hiroshima, the nuclear fallout it released is thought to have been 400 times greater, thanks to the huge quantity of nuclear fuel housed within the damaged reactor.” (p. 96) There is still a large exclusion zone around the site, but much of the radiation has faded and plants and animals have rebounded sharply in this nuclear wildlife preserve. Dangers remain to plants and people, but the area is not a science fiction wasteland. “In most of the zone, radiation has now declined to levels similar to what one might experience in an aircraft, due to cosmic rays, or during a medical diagnostic scan. Today, most concern centres around the radionuclides caesium-137 and strontium-90, both of which have a half-life of around thirty years, and are readily taken up by plants, thus making their way through the food chain.” (p. 102)
For a truly nightmarish place to consider, there is the Place à Gaz, deep in the Zone Rouge, an area around Verdun that was so stricken with unexploded ordnance during World War I that entry is permanently forbidden. There, in 1928, 200,000 chemical weapons, mustard gas, phosgene, and the rest of that devil’s brew, were buried and then set alight. Today, decades later, behind razor-wire fences, a terrible scar still remains, a true dead zone. In 2007 Germans scientists examined the soil. “In places, they discovered 17 per cent of the soil’s weight was made up of arsenic. And plenty more of what biologist call heavy metals: up to 13 per cent zinc, 2.6 per cent lead.” (p. 189) And yet, even here, in this patch of hell on earth, nature is working to reclaim the tortured soil. The area is slowly getting smaller, and some hardy plants are starting to return. Life finds a way.
Some parts of the book deal with abandoned land, and others with abandoned people. There are chapters on Detroit, Michigan, and Paterson, New Jersey, once vibrant industrial centers that have fallen into decay and abandonment. Detroit is caught in a vicious negative feedback loop: people leave, so there are fewer tax dollars to provide services for those who remain, so more people leave, further reducing services. On the internet there are some astonishing pictures of then-and-now Detroit, streets in the 1940s and 50s that were shoulder to shoulder with houses and stores, and which are now completely empty of human habitation and have returned to woods and meadows. Paterson lives in the shadow of New York City, with all the ruination and depopulation of Detroit, and additionally suffers from decades of toxic pollution to its waterways. Even so, people live in its devastated areas, castaways, criminals, and hard core drug users, ruined lives in ruined buildings.
In some places nature moves in as soon as humans move out, but in others what we leave behind will poison the air, earth, and water far, far into the future. An example is Arthur Kill in Staten Island, where for decades dioxins were made in vast quantities, sometimes forming heaps in the bay that had to be raked down at low tide. Dioxins are stable chemicals, breaking down so slowly they are considered permanent. And they are deadly, “There is no truly ‘safe’ level of dioxin contamination; it’s one of the most toxic substances known to man. It is 170,000 times more deadly than cyanide. The US Environmental Protection Agency considers water with dioxin levels of 31 parts per quadrillion (this is, 31 in 1,000,000,000,000,000) is too contaminated to drink.” (p. 164-165) Even here a few remarkable species of plants and fish have started to adapt, but these are dead zones for the vast majority of life.
Natural disasters also have their place in this book. Long ago, when I was in the Navy, my ship visited Montserrat, a British possession in the Caribbean. I remember the capital, Plymouth, as a vibrant, colorful town which also had an American medical school, whose students were happy to show us around in return for a hot shower on the ship. A few years later a volcano, long thought dormant, exploded, burying Plymouth and the surrounding areas. When the author visited she found a strange place where occasional buildings poked out of the ground, and then realized, “We are standing 40 feet above what was ground level. The isolated buildings ahead are, in fact, the top floors of what were four- and five-storey buildings.” (p. 281)
The book ends with a visit to the dying Salton Sea in southern California, and the people who live around it, whose lives are as dead-end as the sea itself. This is a place where people go when they have nowhere left to go, or when they want turn on, drop out, and vanish. A community exists even in this blighted place, hardy souls living a kind of post-apocalyptic existence, creating shelter from the detritus of the civilization that once thrived around them. The author recognizes that this could be the future of whatever remains of humankind if we push ourselves and our environment over the edge.
There are hopeful passages in this book, and despairing ones. It is heartening to see nature making a comeback even in the most devastated areas, and disheartening to think that they are devastated because of us, because of what we did in the name of progress. That progress may, in the end, be the death of humankind, but nature will go on with our without us.