The History of Natural Organic Reduction (colloquially referred to as human composting)

Terramation — now called natural organic reduction (NOR) — did not appear from nowhere. The idea of returning a body to the earth through natural decomposition is as old as humanity itself. What changed in the twenty-first century is that science, law, and advocacy converged to make it available as a controlled, legally recognized disposition option. As of 2026, fourteen U.S. states have legalized NOR, and that number continues to grow. This is the story of how we got here.

What is the history of natural organic reduction and how did it become legal?

Natural organic reduction as a legally recognized practice traces to Washington State's SB 5001, signed May 21, 2019 — the first NOR law in the world. The law grew from WSU research led by Dr. Lynne Carpenter-Boggs and advocacy by Katrina Spade, who founded the first commercial NOR facility. By April 2026, 14 U.S. states have legalized NOR, built on Washington's regulatory template, with the first commercial terramations performed in 2021.

Natural decomposition of human remains is as old as humanity — modern NOR is a 21st-century formalization of the same biological reality with regulated, facility-based controls.
The modern green burial movement, beginning with Ramsey Creek Preserve in 1996 and the Green Burial Council in 2005, laid the cultural and regulatory groundwork for NOR.
Washington State's SB 5001, signed May 21, 2019, was the first NOR law in the United States and globally, becoming the template all subsequent state legislation has built on.
WSU researcher Dr. Lynne Carpenter-Boggs and NOR pioneer Katrina Spade provided the scientific validation and legislative advocacy that made Washington's law possible.
The pace of legalization accelerated dramatically — 5 states legalized in 2024 alone, reflecting that each successful state lowers the political barrier for the next.
As of April 2026, 14 states have legalized NOR: WA, CO, OR, VT, CA, NY, NV, AZ, MD, DE, MN, ME, GA, and NJ — with CA, NY, and NJ legal but not yet operationally active.

Was Natural Organic Reduction Always Part of Human History?

In a broad sense, yes. Before the rise of embalming, concrete burial vaults, and sealed caskets, most human burial practices allowed the body to decompose naturally into the soil. Indigenous cultures across every continent maintained traditions centered on the idea that the body belonged to the earth — that death was a passage, not a termination, and that physical remains could nourish the land.

Ancient agricultural communities recognized the fertility of decomposed organic matter, including animal remains. The philosophical and spiritual frameworks varied enormously — sky burials in Tibetan Buddhism, forest burials across sub-Saharan Africa, simple earth interment in rural Europe — but the underlying biological reality was the same: human remains, given time and the right conditions, become part of the soil.

Modern natural organic reduction is not a revival of any single tradition. It is, instead, a contemporary answer to a question that ancient peoples never had to ask: what do we do when industrialized burial practices impose costs — environmental, financial, and spatial — that we can no longer ignore?

How Did the Environmental Movement Reshape Burial Practices?

The modern green burial movement emerged from the same cultural current that produced the Clean Air Act, the Clean Water Act, and the first Earth Day in 1970. As environmental consciousness grew through the 1970s, 80s, and 90s, a small but persistent community of researchers, advocates, and funeral reformers began documenting the environmental footprint of conventional burial.

The concerns were real and specific. Conventional burial in the United States typically involves embalming with formaldehyde, a known carcinogen. Bodies are placed in metal or hardwood caskets. Those caskets are often lowered into concrete burial vaults designed to prevent ground subsidence. Cemeteries consume significant land — land that is then largely impermeable to natural decomposition.

By the 1990s, some funeral industry observers were asking whether there was a better way. The green burial movement offered an early answer: simple, unembalmed burial in biodegradable containers, in cemeteries designed to allow natural decomposition and support native ecosystems. This was not yet NOR — it was a reform of conventional ground burial — but it planted the intellectual seeds for what came next.

The most significant early milestone was the opening of Ramsey Creek Preserve in Westminster, South Carolina, in 1996. Founded by Dr. Billy Campbell and his wife Kimberley, Ramsey Creek became the first conservation burial ground in the United States. Families could bury their loved ones without embalming, in biodegradable shrouds or simple wooden boxes, in a protected nature preserve. The burial fee helped fund land conservation. It was a model that married death care with ecological stewardship.

The Green Burial Council, founded in 2005, formalized standards for green burial providers and helped legitimize the movement within the mainstream funeral industry. Its certification programs gave consumers a way to identify providers who met defined ecological benchmarks.

For more on how terramation fits within the broader legal landscape, see our complete guide to natural organic reduction.

Where Did the Modern Concept of NOR Come From?

The specific idea of composting human remains in a controlled vessel — what we now call natural organic reduction — emerged from the research community in the first decade of the 2000s. It built on a well-established body of science: large-scale composting of animal remains was already practiced in agriculture, where livestock carcasses were routinely composted with wood chips and other carbon-rich materials.

The key question was whether the same process could work safely, legally, and with the dignity appropriate for human remains. The research program that would eventually answer that question was developed at Washington State University (WSU), in collaboration with advocates who believed that an alternative to conventional burial could be both scientifically sound and ethically meaningful.

The architect-turned-death-care innovator who brought NOR from the research phase to the legislative arena was Katrina Spade, NOR pioneer and founder of the first commercial NOR facility. Her work — including a 2016 TED Talk that reached a broad public audience — transformed a niche research project into a national conversation. For a full account of her role, see our article on Katrina Spade and the origins of NOR.

The WSU research, led by Dr. Lynne Carpenter-Boggs, involved a pilot study in which human remains were composted using a mixture of wood chips, straw, and alfalfa. The study demonstrated that the process could safely reduce human remains to a nutrient-rich soil amendment within several weeks to a few months, depending on the system — and that the resulting material met safety standards for pathogens and contaminants.

What Was the Legislative Breakthrough That Made NOR Legal?

Washington State Senate Bill 5001 was the law that opened the door. Signed by Governor Jay Inslee on May 21, 2019, and effective May 1, 2020, SB 5001 made Washington the first jurisdiction in the world to legally authorize natural organic reduction as a disposition option for human remains.

The bill’s path through the legislature was not without opposition. Religious organizations raised concerns about bodily dignity. Some funeral industry stakeholders questioned the regulatory framework. Advocates responded with the scientific research from WSU and testimony from families who wanted NOR as an option.

The result was a carefully crafted law that established a regulatory framework for NOR providers: requirements for permits, training, facility standards, and handling of the resulting soil. It treated NOR as a dignified, regulated disposition method — not a loophole or an experiment.

You can read more about the full story of Washington’s legislative history in our article on how Washington became the first state to legalize terramation.

How Quickly Did Other States Follow Washington’s Lead?

The spread was faster than many observers expected.

Colorado became the second state in 2021, authorizing NOR through SB 21-006. Oregon followed the same year with HB 2574. Vermont passed H.244 (Act 169) in 2022, becoming the fourth legal state.

Then the pace accelerated. Between 2022 and 2025, ten more states — California, New York, Nevada, Arizona, Maryland, Delaware, Minnesota, Maine, Georgia, and New Jersey — passed NOR legislation. As of 2026, 14 states have legalized natural organic reduction: Washington, Colorado, Oregon, Vermont, California, New York, Nevada, Arizona, Maryland, Delaware, Minnesota, Maine, Georgia, and New Jersey.

It is worth noting that legal status does not always mean operational availability. California, New York, and New Jersey have passed their laws but NOR services are not yet operational in those states. Families in those states should check current availability before making plans. For state-by-state details, see our state guides for NOR availability.

The legislative pattern across these states reflects a common template: advocacy organizations working alongside research institutions, bringing scientific evidence and family testimony to state legislatures. The Washington model — with its clear regulatory framework — gave other states a blueprint to adapt. For a year-by-year breakdown of how each state reached legalization, see our NOR legislation timeline.

Where Does Natural Organic Reduction Stand in 2026?

Natural organic reduction has moved from fringe concept to recognized disposition method in roughly a decade. NOR providers are operating in multiple states, serving families who want an alternative to conventional burial or cremation. The national cremation rate reached 63.4% in 2025 (NFDA 2025 Cremation & Burial Report), reflecting a broad cultural shift away from traditional ground burial — and NOR is emerging as the next step in that evolution.

The history of natural organic reduction is, at its core, a story about rediscovering something ancient through the lens of modern science and law. Humans have always returned to the earth. What’s new is the choice — and the growing number of states where that choice is legally available.

If you’re interested in learning more about NOR providers in your area, or want to understand what the process involves for families, we invite you to explore further.

Learn more about terramation providers near you

How long has natural organic reduction been practiced historically?

In its most basic form — returning a body to the earth through natural decomposition — human burial that allows composting is as old as humanity. Controlled, vessel-based natural organic reduction as a legally regulated practice dates to Washington State’s 2019 law, which became effective in 2020.

Who invented modern natural organic reduction?

No single person invented NOR, but Katrina Spade is most credited with developing the modern concept and driving the legislative effort that made it legal in Washington State. The scientific foundation came from research at Washington State University, led by Dr. Lynne Carpenter-Boggs.

What was the first state to legalize natural organic reduction?

Washington State was the first. Governor Jay Inslee signed SB 5001 on May 21, 2019, and the law took effect May 1, 2020. Washington became the first jurisdiction in the world to legally authorize natural organic reduction for human remains.

How many states have legalized NOR as of 2026?

As of April 2026, 14 states have legalized natural organic reduction: Washington, Colorado, Oregon, Vermont, California, New York, Nevada, Arizona, Maryland, Delaware, Minnesota, Maine, Georgia, and New Jersey. Note that California, New York, and New Jersey are legal but not yet operationally available to families.

Is natural organic reduction the same as green burial?

They are related but distinct. Green burial typically refers to unembalmed burial in a biodegradable container, allowing natural decomposition in the ground. Natural organic reduction (NOR) is a controlled process that takes place in a vessel, accelerating decomposition through managed temperature, moisture, and microbial activity. Both share the goal of minimizing environmental impact.

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Sources

Green Burial Council — greenburialcouncil.org — https://www.greenburialcouncil.org/
Ramsey Creek Preserve — Green Burial Council — https://www.greenburialcouncil.org/
Washington State SB 5001 (2019) — Washington State Legislature — https://app.leg.wa.gov/billsummary?BillNumber=5001&Year=2019
Washington State University — NOR Research Overview — https://www.wsu.edu/
Washington State Department of Health — NOR Provider Licensing — https://doh.wa.gov/
Colorado SB 21-006 — Colorado General Assembly — https://leg.colorado.gov/bills/sb21-006
Oregon HB 2574 (2021) — Oregon Legislative Assembly — https://olis.oregonlegislature.gov/liz/2021R1/Downloads/MeasureDocument/HB2574
NFDA 2025 Cremation & Burial Report — National Funeral Directors Association — https://nfda.org/news/statistics
Green Burial Council — History of the Green Burial Movement — https://www.greenburialcouncil.org/
Katrina Spade TED Talk (2016) — TED.com — https://www.ted.com/talks/katrina_spade_when_i_die_recompose_me