The Atoms We Borrow: From Deep Soil to Deep Space

“As above, so below; as below, so above.”

— The Emerald Tablet

The ground beneath our feet is not dead matter; it is memory. Beneath the soil, beneath the roots and stones, beneath everything we casually call earth, lies an unimaginably old history of rearrangement.

The calcium in our bones, the carbon in our cells, and the sulfur woven into our hair and nails did not begin with us. These elements have travelled through oceans, minerals, plants, animals, microorganisms, the atmosphere, and soil, repeatedly leaving one form only to become another. We inherit the atoms, but we do not inherit their history. And yet, for a brief moment, we give them a brand-new story.

The Earth is not perfectly closed to matter, but on human timescales it behaves remarkably like a vast recycling system, continually exchanging energy with space while endlessly rearranging much of the matter already here. The same elemental building blocks have been moving through planetary cycles for billions of years, meaning what we experience as a single human lifetime is actually just one temporary configuration in a much older planetary journey. Long before there were forests, cities, languages, or human eyes capable of wondering about any of this, there were simple organisms moving through ancient oceans. Life appeared, changed, disappeared, and appeared again in new forms. Evolution did not preserve a particular shape; it preserved the possibility of transformation.

Consider Tiktaalik, living roughly 375 million years ago. Its anatomy occupies an extraordinary threshold between aquatic and terrestrial life, carrying structures that allowed its lineage to explore a world beyond shallow water. Millions of years later, the ancestors of whales underwent an almost inverse transformation, returning from land to water and gradually reshaping their bodies for an aquatic existence. Nature demonstrates a quiet truth through these shifts, proving it is not particularly loyal to outward appearances. It is willing to dismantle a successful design and build something almost unrecognizable from it, transforming a limb into a flipper, a terrestrial mammal into a whale, or a collection of ancient elements into a human being. And eventually, a human being becomes soil again.

Even at a microscopic level, time leaves deep fingerprints that modern science is just beginning to read. Paleoproteomics has shown that under extraordinarily favorable conditions, fragments of ancient proteins can survive within fossils. Scientists can examine chemical changes such as deamidation; molecular alterations that accumulate as proteins age, to help distinguish genuinely ancient material from modern contamination.

A fossil is not merely a stone containing the shape of something that once lived; sometimes, at a molecular level, it is a whisper from the organism itself. Time does not always erase. Sometimes, it leaves fingerprints, and beneath the visible Earth, another story is unfolding. Far below the surface, isolated from sunlight, enormous microbial communities survive using chemical energy derived from rocks and geological processes. The discovery of Earth's deep biosphere reminds us that the surface world we experience is only one thin layer of a much larger living system.

We tend to imagine the Earth as the landscape beneath our feet, though it is better understood as a layered organism of relationships; surface and depth, decay and renewal, life and mineral, organism and environment, each continuously exchanging material with the others. Ancient Indian cosmologies often imagined existence in precisely this kind of layered manner, where visible worlds rested alongside invisible or subterranean realms populated by forces beyond ordinary perception. While the Nagas and the subterranean realms associated with them belong to myth, their philosophical resemblance to modern microbial ecology is indeed intriguing.

Again and again, human beings have sensed that the visible world is only a fraction of reality, and modern science keeps making that fraction smaller.

We now know that beneath apparently lifeless ground, life persists. Inside our own bodies, trillions of microorganisms participate in the processes that sustain us, acting as host and habitat, organism and ecosystem. When the body dies, the relationship reverses, and the organisms that lived alongside us begin dismantling what we once called ourselves, making the boundary between life and environment difficult to defend. We are, in a very literal sense, a temporary community of borrowed materials.

Over time, human beings even learned to intervene consciously in these planetary cycles. Ancient communities in the Amazon created Terra Preta, enriching poor tropical soils with charcoal, organic material, and other nutrients. They did not merely survive within an ecosystem; they altered the conditions under which future life could survive. Something remarkable had happened, matter had begun to become intentional.

For billions of years, chemistry had been organizing itself into increasingly complex structures. Life had emerged from matter and learned to reproduce, adapt, and transform its surroundings until eventually, one branch of life developed the ability to model the world internally and deliberately reshape the world outside itself.

A mind is matter capable of reflecting upon matter, and a civilization is matter capable of reorganizing matter according to an idea. This is where the question becomes cosmic, bringing us to the unsettling heart of the Fermi Paradox. The universe contains an almost incomprehensible number of stars and planets, yet we have not found convincing evidence of another technological civilization. Is intelligent life extraordinarily rare because the conditions required for it are a cosmic accident, or do civilizations tend to destroy themselves before becoming capable of reaching beyond their planetary homes?

Maybe we are simply too early, too quiet, too far, or looking in the wrong way.

Even worlds such as K2-18b remind us how difficult the question remains. Observations from the James Webb Space Telescope have revealed intriguing atmospheric chemistry, including methane and carbon dioxide, but proposed biosignatures remain contested. We are becoming extraordinarily capable of detecting molecules across interstellar distances while still being unable to answer the oldest question; "Is life a rare accident, or a natural consequence of matter under the right conditions?"

We do not know, because maybe we are not supposed to know yet, and because there is another question hiding beneath it. If the atoms composing us are ancient, and if life is an extraordinary way of arranging those atoms, then perhaps individuality itself is more temporary than we imagine.

We spend our lives saying my body, my rules, my bones, my blood, my mind, and my life. But what exactly is mine? The carbon, the calcium, and the water were all here before us, passing through countless other forms like forests, oceans, rocks, and soils. We do not own this matter; we inherit it temporarily, realizing at last that a human being is not a possession but a pattern. For several decades, the Earth gathers ancient atoms into an extraordinarily specific arrangement capable of remembering, loving, suffering, creating, questioning, and looking back at the universe from which it emerged. Later, the arrangement begins to loosen. The body returns its borrowed materials, and the boundaries we defended so fiercely dissolve.

From the perspective of matter, death is not disappearance or a final loss; it is a beautiful redistribution where the end of one arrangement becomes the beginning of another.

Water moves elsewhere, evaporating into the atmosphere, falling as rain, or flowing through the roots of a new forest. The iron in our blood sinks back into the earth to tint the clay.

Molecules are broken apart and reused as a body becomes soil, soil becomes root, root becomes leaf, leaf becomes breath, and breath eventually builds another body in an endless loop of cosmic recycling. We arrive believing the world has given us something we permanently own, only to realize that we were the ones being borrowed all along, existing as brief, beautiful patterns in which the universe temporarily gathers its ancient ingredients to look back and wonder at itself.

Humanity is not a finished masterpiece, but part of an ever-evolving experiment. Every civilization that rises and falls, every species that adapts or vanishes, and every individual life that dissolves back into the cosmos is just another test run in a universe that refuses to stay still. If the experiment is designed to never truly finish, then our purpose is found entirely in the trial itself, in the messy, beautiful act of experiencing, responding, and becoming.

We are the universe trying out new questions, testing the limits of what matter can feel, and endlessly rewriting its own hypotheses through us, one fleeting life at a time.

"We are such stuff as dreams are made on, and our little life is rounded with a sleep.”

— William Shakespeare, The Tempest