The Resomator stands monolithic in the corner of a room on the ground floor of a building at UCLA. It’s as sterile as a hospital in here, but every patient is already dead. This is the penultimate stage of their time under the care of Dean Fisher, director of the Donated Body Program at the UCLA David Geffen School of Medicine. After dissection, bodies are wheeled in under crisp sheets for disposal in Fisher’s alkaline hydrolysis machine, which turns them into liquid and pure white bone. Later, their air-dried bones will be pulverized and scattered off the coast by nearby Camp Pendleton, the Marine Corps base, where they will float and then disperse, because pure calcium phosphate dissolves very slowly. From a Coast Guard helicopter, it looks like drug lords flushing their stash.

The machine is mid-cycle, emitting a low hum like a lawnmower several gardens away. It’s a rectangular box as big as a van, and its stainless steel panels neatly hide pipes, a panel of flashing lights and fuses, and the cylindrical tank that holds the body. All that’s visible from the outside is a touchscreen and four lit-up buttons: three green, one red. Bodies enter through the same kind of circular steel door that Britain’s defense ministry uses on nuclear submarines.

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April 2018. Subscribe to WIRED. Nik Mirus

Fisher explains what’s happening inside the high-pressure chamber: Potassium hydroxide is being mixed with water heated to 302 degrees Fahrenheit. A biochemical reaction is taking place, and the flesh is dissolving off the bones. In the course of about four hours, the strong alkaline base breaks down everything but the skeleton into the original components that built it: sugar, salts, peptides, and amino acids. DNA unzips into its nucleobases—cytosine, guanine, adenine, thymine. The body becomes a sterile watery liquid that looks like weak tea. The liquid shoots through a pipe into a holding tank in the opposite corner of the room, where it will cool, reach an acceptable pH, and be released down the drain.

Fisher, gray-haired and beaming in light-green scrubs, says I can step outside if it all gets to be too much, but it’s not actually that terrible. The human body, liquefied, smells like steamed clams.

Cremation and burial, the most common ways that bodies are disposed of after death, haven’t fundamentally changed in quite some time. The modern act of embalming, popularized during the American Civil War, is a physically violent one in which blood goes down the drain, untreated, after being pushed out by embalming fluid pumped through the vascular system. Full of dyed-pink carcinogenic formaldehyde and other chemicals, the body is put in the ground, where its decomposition is delayed, but not entirely so. The chemicals seep out as the corpse putrefies, along with any drugs that were present at the time of death. In the US alone, more than 800,000 gallons of embalming fluid are buried every year.

In 2015, the popularity of cremation fractionally outpaced burial in the US for the first time in history—but few ask what it entails. They don’t know that an hour into the process, a crematory operator will open the door and use a rake to hook the skeleton by the ribs and move it around to ensure the whole body is touched by flame. They don’t know that, despite the best efforts of crematory operators, bone dust catches in the bricks of the retort (the chamber in which the deceased is burned); cross-­contamination of bodies is inevitable. Instead of chemicals leaking out into the soil, they end up in the clouds.

Alkaline hydrolysis avoids all that. It was conceived in the mid-’90s to solve Albany Medical College’s problem of research rabbit disposal—the bodies were radioactive and therefore could not be burned or buried affordably—and in 2003 Minnesota became the first US state to allow its use on human remains. (The business of body disposal is highly regulated at the state level, and authorities are generally wary of novelty.) In the years since, a growing number of independent funeral homes have added alkaline hydrolysis to their list of services, and last October, California became one of a dozen or so states to legalize it. Jack Ingraham, CEO of Qico, a San Diego startup that’s joined the two established players in the field—the UK’s Resomation (creator of Fisher’s machine) and Bio-Response Solutions in Indiana—expects Utah to be next, with more states to follow as awareness spreads and demand grows. “Our goal is that, in 10 or 20 years, the term ‘cremation’ will be thought of entirely as a water-based process,” he says.