HBM152: Dirt Becomes You

Image by Jeff Emtman. Digital render.

 

What do you want to happen to your body when you die?  It’s a touchy topic where tradition, religion and death denial all come into play.  But across much of the world, there are just two options: burial and cremation, which both have substantial ecological impacts

In 2019, Washington State passed SB 5001, which legalized several new options for deathcare. 

In this episode, host Jeff Emtman visits Return Home, a facility in Auburn, Washington that’s using one of those new options, called “Natural Organic Reduction” (NOR) which is commonly called “human composting”.  

Return Home has built the world’s largest NOR facility to date, with 74 available individual vessels.  Their process (which they’ve trademarked as “Terramation”) takes about two month to complete, and involves dressing a deceased person in a pressed cotton gown and placing them a bed of organic material, and left to naturally break down using active composting techniques that bring the contents of the vessel to well above 100° Fahrenheit for much of the composting period. 

 
 

The techniques used by Return Home were largely inspired by Katrina Spade, a death activist and the owner of Recompose, another NOR facility located near Seattle.  Spade was one of the people who strongly advocated for the passage of SB 5001.

There’s currently one other NOR facility in Washington State: Herland Forrest in Wahkiacus.  Currently two other states, Colorado and Oregon have legalized NOR.  

NOR’s future isn’t known.  It’s new and still relatively rare. Do enough people want to be composted to have it be a viable business model? Each of these companies have different approaches to their process.  

 
 

Return Home’s model relies on scale.  They wouldn’t disclose the exact cost of building their facility, or how many simultaneous descendants they’d need in their facility to be profitable.  As of publishing, they charge $4,950 for their process and they have 15 of their 74 slots occupied.  

And in some ways, the full ecological benefits for Return Home’s process also rely on scale.  In a follow up email, CEO Micah Truman stated:

We calculate our inputs as follows. Our electricity bill each month is about $1,700, and is sufficient to Terramate 74 bodies. This comes to $22 per body. In current gas terms ($5 a gallon at present) that is roughly 4 gallons of gas, which is about 1/8 the amount of gas used for cremation. The number is actually quite a bit better than that, as our electricity bill also powers our entire facility, not just the Terramation equipment.

When asked about the relative emptiness of the facility, Katey Houston (Return Home’s Services Manager) said,

The funeral industry is so slow to change. When cremation became a thing, it took sixty years to become mainstream.  The fact that we’ve served just over thirty families now in four months, is quite amazing.  And we’ve continued to grow month-over-month, and that’s all I can ask for.

Thank you Hannah Suzanna for help with research for this episode. 

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Producer: Jeff Emtman
Music: The Black Spot and Serocell

 

 

Sleep With Me is a podcast that helps you fall asleep. Host Drew Ackerman tells tangential stories, reads old catalogs, makes metaphors about washing machines, and does other calming things all in pursuit of slowing your mind down and letting you drift off to sleep more peacefully.

 

HBM147: Chasing Tardigrades

Image by Jeff Emtman. Kaleidoscope collage of moss microscopy photos.

 

With much of the world shut down over the last year, HBM host Jeff Emtman started wondering if there were smaller venues where the world still felt open. 

In this episode, Jeff interviews Chloé Savard of the Instagram microscopy page @tardibabe about the joy of looking at small things, and whether it’s possible to find beauty in things you don’t understand.  

Chloé also gives Jeff instructions for finding tardigrades by soaking moss in water and squeezing out the resulting juice onto slides.

Producer: Jeff Emtman
Music: The Black Spot

 

Jeff’s Microscopy Pics

Student microscope and smartphone. Click to enlarge and read descriptions.

 
 
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HBM143: Laughing Rats and Dawn Rituals

Image by Jeff Emtman. Photo of sage grouse by Bob Wick of the Bureau of Land Management. Orange sky elements are the spectrogram of the sound of the mouse courtship call heard in this episode.

Image by Jeff Emtman. Photo of sage grouse by Bob Wick of the Bureau of Land Management. Orange sky elements are the spectrogram of the sound of the mouse courtship call heard in this episode.

 

Animals sometimes make noises that would be impossible to place without context.  In this episode, three types of animal vocalizations—described by the people who recorded them. 

The monkey who lost their mother. Photo by Stephanie Foden.

Ashley Ahearn: Journalist and producer of Grouse, from Birdnote and Boise State Public Radio

Joel Balsam: Journalist and producer of the upcoming podcast Parallel Lives.  Joel co-created a photo essay for ESPN about the “pororoca”, an Amazonian wave chased each year by surfers. 

Kevin Coffey, Ph.D.: Co-creator of DeepSqueak and researcher at VA Puget Sound and the University of Washington.  Kevin co-authored the paper DeepSqueak: a deep learning-based system for detection and analysis of ultrasonic vocalizations in Nature’s Neuropsychopharmacology journal. 

Also heard: calls of the Indies Short Tailed Cricket (Anurogryllus celerinictus), which may be the perpetrator of the so-called “sonic attacks” recently reported in Cuba.  Sound sent in by HBM listener Isaul in Puerto Rico.  

Producer: Jeff Emtman
Music: The Black Spot

 
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Chas Co welcomes pets with special behavioral and medical needs, including those that other services have turned away.  They offer dog walking, cat visiting, and custom care arrangements too. 

Look, it’s Kane!

HBM142: The Vastness of the Universe

Image by Jeff Emtman with source material from the 2016 frequency allotment poster and Greg Zaal’s Dikhololo Night via HDRI Haven.

 

1,420,405,751* hertz is a very important frequency.  It’s the frequency that hydrogen radiates at, creating radio waves that can be detected far away.  And astronomers can learn a lot about the history and shape of the universe by observing this “hydrogen line” frequency with radio telescopes

Extraterrestrial research astronomers also take a lot of interest in the hydrogen line...and it’s for the same exact reason, though the context is different.  It’s thought that if an alien species is capable of communicating with us, wouldn’t they also have figured out the importance of the hydrogen line?  And is it possible that just maybe, they’d use it (or frequencies near it) to communicate with us?  The theory being that the hydrogen line could be used as a kind of universal hailing channel for intelligent species—a representation of a shared understanding of physics. 

Talk of the hydrogen line was front and center in 1977, when an American astronomer named Jerry R Ehman found a very strong signal on the printout from a radio telescope dubbed “The Big Ear” at the Ohio State University.  The signal he found was close to the hydrogen line.  He noted the abnormality of the strong the signal by writing “Wow!” in red ink on the margins of the printout.  The so-called “Wow! Signal” has long been cited as potential evidence for alien communication. 

But Dr. Seth Shostak (senior astronomer at The SETI Institute and co-host of Big Picture Science) isn’t convinced.  His organization searches for extra terrestrial intelligence across the universe with a high degree of skepticism.  And he’s experienced a false positive or two over the years.  Seth thinks the Wow! Signal (and other related anomalous signals) are almost always tied back to human interference

 

An excerpt from the 2016 frequency allotment poster created by the USA’s Department of Congress. Near the middle, we’ve circled the protected hydrogen line frequencies.

 

In 1979 (not long after the Wow! Signal), frequencies near the hydrogen line became protected when a group called the International Telecommunication Union (ITU) created a 1000+ page document that included a worldwide recommendation to keep these channels clear for astronomy and SETI purposes, citing the “special importance to mankind to determine the existence of extraterrestrial civilizations.” (see page 920 of the Finals Acts of the World Administrative Radio Conference, Geneva, 1979)  

Despite this protection, Seth Shostak says there’s still interference on the hydrogen line from human sources.  That interference draws the ire of radio astronomers everywhere. Seth says, “It’s like turning on a bright light in a movie theater—you don’t ingratiate yourself with the patrons.”

Producer: Jeff Emtman
Music: The Black Spot

*Give or take some fractional hertz.

 
 
 
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HBM138: Did Neanderthals Bury their Dead?

Foreground: Flowers drawn by 16th century naturalist Ulisse Aldrovandi. Midground: The reconstructed skull of Shanidar 1. Photo by James Gordon. Background: View from mouth of Shanidar Cave, photo by Graeme Barker. Digital composite by Jeff Emtman.

 

There’s a large cave in the foothills of Iraqi Kurdistan. It looks out over green and yellow fields and a river far below. Starting in the 1950’s, the American archaeologist Dr. Ralph Solecki led a team who excavated a trench in Shanidar Cave, discovering the remains of ten Neanderthals who died about 50,000 years ago. 

Dr. Solecki’s discoveries helped ‘humanize’ Neanderthals, a species of early humans often thought of as the brutish, stupid cousins of our species. In sharp contrast, Solecki believed Neanderthals to be nuanced, technologically adept, interested in art and ritual. Solecki suggested that the bodies at Shanidar Cave were intentionally buried. 

Many of Dr. Solecki’s theories on the complexity of Neanderthal minds seem to be correct. But he also made a famous claim about one of the bodies, named “Shanidar 4.” This individual was found with flower pollen around the body. Solecki suggested this was a ‘flower burial’, an intentional death ritual where flowers were laid on the body, possibly to signify the passing of an important member. This interpretation was not universally accepted, as others pointed out there are several ways for pollen to wind up on a skeleton. 

Half a century later, Dr. Emma Pomeroy from Cambridge University went back to Shanidar Cave with a team of archaeologists. They kept digging, hoping to help contextualize Solecki’s findings. To their surprise, they found more bodies. And their findings seem to support Solecki’s theories. The bodies were likely intentionally buried, and they were discovered in soil that contained mineralized plant remains, meaning that the pollen in Solecki’s findings couldn’t have come from modern contamination. 

 
 

It’s possible that Shanidar Cave may have been a significant spot for Neanderthals. But Dr. Pomeroy believes that further work is still needed. Currently, their excavations and lab work are on hold due to the current coronavirus pandemic. 

Dr. Pomeroy admits to imagining the lives of the Neanderthals she studies. She wonders how they spoke to each other, and what they believed about death and the rituals surrounding it. These things don’t preserve in the fossil record though, so we’re all stuck interpreting from clues, like the source of a bit of pollen or the maker of a tiny piece of string.  These clues have the ability to teach us the “humanity” of some of our closest evolutionary cousins. 

Producer: Jeff Emtman
Editor: Bethany Denton
Music: The Black Spot, Phantom Fauna

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HBM126: Sounding the Deep

Computer-generated terrain in the style of a bathymetry map. Image by Jeff Emtman.

Computer-generated terrain in the style of a bathymetry map. Image by Jeff Emtman.

 

How familiar are you with the shape of the continents? What about the shape of the seafloor?

If you’re unfamiliar with the contours of our planet’s underwater mountain ranges and plateaus and valleys, then you’re not alone. No one really knows what’s down there; at least, not in any great detail. That’s because, well, the water is in the way, and that makes it hard for our mapping satellites to see down there. Even the seafloor maps we now have, the ones that include prominent underwater features, are often based on predictions from satellite observations of the oceans’ surface instead of observed data. At present, as much as 80% of the seafloor has yet to be mapped in detail. Even the Moon and Mars are mapped at a higher resolution than our own oceans.

Dr. Vicki Ferrini wants to change that. She is a marine geologist who specializes in bathymetry, the science of mapping underwater topography, and uses sonar to take measurements of water depth. She uses these measurements and other data to create topographic maps of the seafloor. Vicki is part of a global effort called Seabed 2030, an initiative sponsored by the Nippon Foundation and the General Bathymetric Chart of the Oceans (GEBCO) to create a high-resolution map of the entire ocean by the year 2030. Having a completed map will inform almost everything we do in the ocean, including modelling currents and the climate, exploring for minerals, oil, and gas, and managing fisheries and underwater habitats. Seafloor mapping was essential to the plate tectonics revolution, and some scientists think that a more detailed map could lead to another major shift in oceanography.

 

Vicki isn’t just interested in mapping the deep ocean. In this episode, Vicki tests a small sonar designed for shallow waters. She and her colleagues need it to map a shallow lake in the middle of a crater on a newly-formed island near Tonga in the South Pacific. Mapping this small lake will give Vicki and her colleagues some insight into how the island formed, and why it hasn’t eroded as quickly as other volcanic islands like it.

Producer James Dinneen went to Vicki’s childhood home on Cape Cod in Massachusetts to record as she tested the sonar device she was about to send off to her colleagues in Tonga.

This episode includes archival tape, used with permission from San Francisco Maritime National Park Association.

Producer: James Dinneen
Editor: Bethany Denton, Jeff Emtman
Music: James Dinneen, Lucky Dragons, The Black Spot

 
A preliminary map of the island's shallow waters, made with data from Vicki's sonar. Image provided by Vicki Ferrini.

A preliminary map of the island's shallow waters, made with data from Vicki's sonar. Image provided by Vicki Ferrini.