The concept of time of emergence (ToE) is defined as the time at which the signal of climate change in a given variable emerges from a measure of the background variability or noise.
—Nathanial L Bindoff et al., “Changing Ocean, Marine Ecosystems, and Dependent Communities,” IPCC Special Report on the Ocean and Cryosphere in a Changing Climate, 2019
Picture this: a cold December night, high up on New Mexico’s Pajarito Plateau. A waning moon reflects off the snow and illuminates a former boys’ school. War has converted the school into a military base, making it a mishmash of architecture: half ponderosa-pine lodges, half asbestos-shingled laboratories—all encircled by high fence and barbed wire. Inside the small and hastily built infirmary, a baby girl is born. For the base employees, she is an immediate marvel. Each day, curiosity seekers stream by the nursery, hoping for a glimpse of the infant. Her parents are rarely to be found. Already infamous for her volatile wit and afternoon cocktails, the baby’s mother claims postpartum exhaustion of her delicate nerves. She decamps to her ancestral home back east, where she will stay for several months. Meanwhile the baby’s father, fueled almost entirely by nicotine and single-mindedness, continues to work around the clock. He places the baby in the care of a neighbor and, after weeks of stilted visits, presses the woman to adopt his child. Shocked by the offer, the woman refuses, saying the scientist and his daughter just need more time to bond. But he knows even then that he’s not the kind of person who attaches.
Months later, and in the midst of an epic thunderstorm, the father drives far out into the desert. This time, it’s lightning illuminating the scene, casting green and purple flashes on a tall metal tower. At its peak sit fourteen pounds of plutonium-239, encased in TNT. When detonated, the trinitrotoluene condenses the radioactive isotopes, triggering a release of energy rivaled only by the sun. The shock obliterates the tower, turns the surrounding sand to glass, renders buildings and animals into brilliant shadow. It unleashes scores of liberated neutrons, which pinball in the atmosphere, causing their own chain reactions as they convert nitrogen into radioactive carbon-14. Ordinarily formed only in trace amounts and by cosmic rays, this new abundance of radiocarbon disperses through the atmosphere. It enters both soil and sea, is taken up and settles into living tissue.
All of this is an inevitable good, the man insists. Proof that science can shape planetary destiny and force a global peace.
The father’s technology becomes the keystone for global security policy. More detonations follow, raining down additional radiation, mostly in the South Pacific. For this, the father and his team are extolled as titans, high priests of technology. His face appears on the covers of magazines, the front pages of newspapers. What they don’t report is this man’s growing doubt and despair. We have made an evil thing, he begins to say. A most terrible weapon that has altered abruptly and profoundly the nature of the world.
Few listen to his warning cry.
Few listen to his warning cry. And so the man and his family escape the high desert for a tony estate in New Jersey. The girl will grow up there. She’ll learn to ride horses, to hunt for four-leaf clovers. In glossy magazines, she’ll be pictured wearing gingham dresses and bobby socks, posed on the couch with her father or tending to greenhouse orchids with her mother. Still a young child, she already rues this blinding exposure. Meanwhile, her mother’s drinking worsens. So too does her father’s despondency.
In 1952, the girl contracts polio. Her doctors prescribe humid warmth. And so that Christmas the scientist takes his family to the Caribbean, where they spend weeks plying the trade winds aboard a two-masted yawl. Eventually they come ashore on the island of St. John. To the few residents there, the father is all knock-kneed and hollow chested, a concave specter of a man. The mother is nothing but sharp angles, both literal and metaphoric. Their daughter is quiet, polite, reserved—a pair of enormous brown eyes, taking in everything.
The family falls in love with this island: its ruggedness, its lack of development, its stunning forests and rich crystalline waters. They design a house—a modest little cottage with three walls. Instead of a fourth, they order a large, tiled porch and three concrete steps that spill into the sand. A contractor’s mistake sites the dwelling perilously close to the ocean. The father shrugs off the error. The sea is his family’s citadel, their protection from curious onlookers, the press, the growing governmental surveillance. What could possibly be the harm?
Picture this: a sultry August evening, just off that same beach. A waning moon reflects off the surface of the water. Just below sits a dense thicket of elkhorn coral, their thick fronds all tangled and golden brown. Once the sun drops below the horizon, these three factors—the specific time of day, the phase of the moon, and the temperature of the ocean—trigger their own chain of events. In near-perfect symphony, the coral polyps broadcast millions of tiny iridescent sacs. The sacs blizzard upwards, turning the otherwise azure water a milky white. At the surface, the sacs burst, intermingling sperm and eggs. Those that successfully fertilize become tiny larvae. As they grow, these planulae begin swimming in search of solid ground. They learn to dive deeper and deeper, looking to attach to rock and existing reef. Once rooted there, they begin taking in carbon and calcium from the seawater, converting both into aragonite crystals—limestone used to build fortresses of their own.
The presence of this radioactive isotope in the coral’s structure should be just a whisper.
Each year, this building process is guided by the seasons: The polyps lay down dense bands of calcium carbonate in the winter and lighter, more porous bands in the spring. In time, scientists will begin to study these bands as they do the rings of ancient trees. Using the presence of carbon-14, they can date reef formations born thousands of years ago. The presence of this radioactive isotope in the coral’s structure should be just a whisper—and it is, in band after band, going back eons. But trace those same bands forward, halfway into the last century, and its presence becomes a bellow—a dramatic and unprecedented spike. There is only one explanation. Scientists call it the bomb pulse: a brief but indelible mark heralding the moment humanity seized the power to alter planetary systems. Clear proof, they say, of what a signal looks like when it emerges from noise.
After that second Great War comes the Cold War. Increasing nuclear detonations on both sides annihilate temporary political alliances. In their place comes an era of savage isolationism. Accusations are made; damning lists are drawn. The father in our story becomes an obvious target. He has associated with radicals, both known and unknown; he has made contributions to their cause. Worst of all, he now opposes every aspect of the technology that made him immortal. He is cast out as a pariah, as are any colleagues who shares his views. This, they agree, is the true fallout. Their wings have melted; they have plummeted back to earth.
Forever vanquished, the scientist and his family retreat once again to the Caribbean island. With only a single dirt road and very few permanent dwellings, the island’s power lies in its invisibility: no phones to be tapped, no newspapers to be read. This is not enough to comfort the girl’s mother. At night, she shrieks in drunken anger, smashes dishes and vases. The island residents are discrete: They accept the scientist’s money for the damage wreaked by his wife; they tacitly agree to ignore her obvious instability.
It is, he assumes, one of the safest places to be in the event of nuclear fallout.
In time, the girl matures, becomes fluent in Creole. She soon adds German, along with Spanish, French, and eventually Russian. A contemporary and friend of her father, a chemical engineer newly emigrated, teaches the girl Finnish as well. At night, the two men sit out under the Caribbean moon, discussing the increasing possibility of nuclear winter. The father finds comfort in the region’s prevailing winds and currents. It is, he assumes, one of the safest places to be in the event of nuclear fallout.
Barely thirty nautical miles to their west, however, preparation for a new war has begun. Off the coast of Culebra, there’s a new round of apocalyptic testing. Artillery rains down upon the reef. A naval destroyer, once used as a target for the very atomic experiments first designed by the father, is towed to the region and sunk there, a gleaming and radioactive bull’s-eye for bombers to pelt with the toxic ingredients of contemporary warfare.
The language of nuclear weapons can feel ekphratic on the tongue: Cobalt-60. Strontium-89. Ruthenium-103. Said aloud, they conjure the lyricism of thick oil paints, imagistic portraits of the grotesque. The same can hardly be said for the chemical components used in battle. Toxins like dinitrobenzene, nitrotoluene, hexahydro-1,3,5-trinitro-1,3,5-triazine do not hide behind the appearance of poetry. But they, like the radioactive isotopes, become a part of all calcified coral’s structure. They can be found in a lobster’s shell, a shark’s eye, the ear bone of an anadromous fish. They fall as marine snow into the ocean’s deepest trenches, coming to rest in the guts of shrimp thirty-seven thousand feet below the surface. They drift, banking and accumulating in the reefs surrounding Caribbean islands.
War is one of the greatest emitters of carbon. Studies have found a clear connection between military ordnances and the declining health of a coral reef: Those reefs with the highest concentration of bombs and bomb fragments also have the greatest rates of damage, disease, and death. Perhaps not surprisingly, the organisms closest to these ordnances have the greatest levels of toxins in their cells. That is particularly true for species unable to relocate or distance themselves from the source.
The same can be said for people.
From the time he was a young adolescent, our scientist was rarely seen without a cigarette in hand. As an adult, he is rumored to chain-smoke a hundred a day, taking in what must have been pounds of carbon, along with benzene, uranium, and polonium. He understands actions and reactions, so how could he have been surprised when these disruptors attacked his DNA, turning it into a monstrous thing?
What does surprise him is the scientific limits of radiation: All that energy—enough to obliterate entire cities—can’t quell an aggressive tumor’s growth.
They are so overcome with shared grief, it’s all they can do to toss the urn overboard, unopened.
In his final days, the scientist asks that his remains be scattered among his beloved Caribbean staghorn coral. Days after the funeral, his wife and daughter are ferried out to the reef aboard a neighbor’s skiff. They are so overcome with shared grief, it’s all they can do to toss the urn overboard, unopened. No one remembers just how long the boat circled the bobbing cannister, waiting for it to sink below the surface.
By then, the young woman is clearly drifting herself. She studied languages and won awards in college, was recruited by the United Nations to become a translator. But her father’s perfidy continues to plague her. She is denied the requisite national security clearances, any hope of political employ, any opportunity to undo the burden of inheritance. So, instead, she marries the Finnish engineer, two decades her senior. Together, they set sail aboard his yacht, Dulcinea. They do not stop until they reach the other side of the world. Only then does she believe she may find an unsettled peace.
It does not last. Five years after the death of the scientist, the girl’s mother enters the Panama Canal Zone, halfway along her own voyage to the South Pacific. While there, a blood clot in her arm explodes, arresting her beating heart. It falls to her daughter to collect the dead woman’s remains, to consign her ashes to the same reef as the scientist. Afterward, the daughter finds she cannot return to her husband and his boat. Instead, she settles, alone, at her family’s island cottage. In time, she invites a calypso band to rehearse there. She falls in love and marries their keyboardist. The band begins to record their first album. She offers them its eventual title: Time Is Running Out.
The marriage ends almost as quickly as it began. The woman invests her savings in a new way to say the same thing: a beach bar she names The Out. It is just days before her twenty-ninth birthday. Already, she is contemplating her own end.
In the parlance of atomic physics, reactive isotopes are known as parents; more stable ones, daughters. It is a generally accepted scientific principle that parents decay into daughters at an exponential and consistent rate constant to each particular pair.
Psychology tells a similar intergenerational story. Experience alters genetic expression—rewriting the very DNA that passes from parent to daughter, from one body to the next. What persists is epigenetic signal with a half-life all its own.
The proverbial frog in the proverbial simmering pot.
Who can say for certain where any chain reaction begins or ends? Is it the moment of coupling? The subsequent fissures? The building up or the inevitable decay? What does seem clear is the point of no return, the threshold at which undeniable destruction emerges.
Picture this: yet another December evening. This one is deliciously mild, tousled by Caribbean breeze and waves. Neither is enough to drown out the relentless sound of military exercise. Testing at the nearby island has reached its zenith, with nearly eight thousand bombs dropped each month—over two tons of explosives detonated each day. Already, millions of pounds of active ordnance litter the surrounding reef. It, like others throughout the region, has been transformed by bands of white lesions that strip the coral to bare skeleton. The proverbial frog in the proverbial simmering pot.
A new year dawns. The coral may still recover. But it is too late for the daughter in our story. She finds some rope, ties a noose around a bedroom rafter. This is clearly more than an experiment: She leaves notes on the bed, instructions for her legacy. To the people of her beloved island, she bequeaths the cottage, the beach, the paltry remainder of her savings for their care.
That money is no match for warming oceans.
Ten years after her death, the costliest hurricane in recorded history rips through the Caribbean. It kills nearly seventy people, destroys thousands of homes. The storm’s surge is the highest to date. It pulls the cottage from its foundation, dragging it into the sea. It splits reefs, turning entire coral formations into little more than sand. A decade after that, another storm of the century batters the region, again with the power of ten thousand nuclear bombs. This one takes the beach itself, leaving the cottage’s three concrete steps dangling awkwardly above bedrock.
By then, the reef has already become pristine desert, the gravesite now not only for consigned parents, but also for an entire ecosystem.
Heat weakens them; disease follows.
Coral survives by precision. The process of forming aragonite tolerates little deviation. Too much dissolved carbon interrupts construction, leaving the limestone thin and fragile. Warm the water by a degree or two and the balance breaks again. Heat stresses the algae living inside the coral’s tissue—the symbionts that feed it, color it, sustain it. Under thermal strain, the algae turn toxic. The polyp is forced to expel it, bleaching itself of both color and nourishment. Each wave leaves reefs more vulnerable than before. Heat weakens them; disease follows.
A coral polyp has no choice but to build its body from what surrounds it. It cannot refuse the water it lives in, only endure it. So too a daughter: shaped by forces she never touched, carrying a history written long before she could read it. This is the quiet truth of fallout—that it does not cascade all at once, but instead continuously accumulates and embeds. Most of it passes for background. One must look closely to see what settles into bone, shell, and stone. At first glance, a flash meant to end all wars leaves just the faintest trace, a narrow band pressed into living matter—an afterimage mistaken for progress. From that moment, however, all baselines shift. Color fades even further and often by seemingly imperceptible degrees. As it does, the future begins to compress into a single airless choice. Neither reef nor life fails suddenly. Instead, there comes a moment when the background falls silent, when variability can no longer mask the cost of accumulation. The signal stands alone then, unmistakable, irreversible.
This is the true moment of emergence. And by then, it no longer functions as warning
