Everything alive is borrowed. The carbon in your hands was a forest once; the calcium in your bones has been through stars and stone. A life is a loan of matter, drawn from the world and owed back to it.
There are more of us than there have ever been, and most of us are getting old. Around sixty million people die each year, and that number will climb as the largest generations reach the ends of their lives. Every death is a grief. Every one is also a physical event: a body, roughly a hundred pounds of nutrients, and a decision about where all of it goes. At the scale of one funeral that decision looks small. At the scale of a planet short of soil, clean water, and unbuilt land, it is not.
We have mostly chosen to spend energy and material locking that mass away from the living world rather than returning it. The conventional funeral seals a body inside metal and concrete, pumps it with formaldehyde to delay the very process that would return it, and calls the refusal respect. Cremation gives nothing back and burns fossil fuel every time. Neither is the clean choice most people assume.
The better options already exist. Water can do the work of fire at a fraction of the carbon. A body can be returned to the earth on purpose and become a cubic yard of clean soil in weeks. A coffin can be grown from mushrooms rather than built. Ashes can seed a reef or a tree. None of it is theoretical, and none of it requires permission from a funeral home.
What stops us was never the science, and rarely the cost. It is fear, and taboo, and the long habit of not looking. We inherited the concrete and the chemistry because choosing otherwise meant looking directly at death, and we would rather look at almost anything else.
So the ecological case, in the end, is not really about carbon. It is about courage: whether a culture that claims to love the natural world can find the nerve to rejoin it at the end. The generation now making these decisions is the largest in history, facing a world that can no longer afford unexamined defaults. The old practices deserve to be revisited, not out of disrespect for the past but out of respect for what we now know and what the earth now needs.
A body is a hundred pounds of nutrients. It can be a gift to the living world, or it can be sealed away from it at real cost. That has always been the choice. What is new is that we can finally see it clearly, and no longer have the luxury of looking away.