Original black Lab Billy Bean and its puppy clone. (Monni Must)
Melvin was a special dog. A mixture of Catahoula and Doberman with black and tan markings, he was the office greeter, barking hellos to everyone who visited the Dupont Veterinary Clinic in Lafayette, Louisiana, which is owned by his human companions, Dr. Phillip Dupont and his wife, Paula. The couple say he's the best dog they ever owned.
When Melvin passed away, having two identical replicas helped ease the couple's grief.
He seemed to have an uncanny knack for understanding what they were saying, he could find lost car keys in tall grasses and the Duponts trusted him so much they felt comfortable having him babysit their grandson unattended in the backyard.
So when the 75-pound canine turned 9 and began to show signs of age, the Duponts sent off some of his skin cells to a lab in South Korea, the Sooam Biotech Research Foundation, to have him cloned. The Duponts toured the South Korean facilities and were satisfied that the animals were being treated well. While the first cloned puppy died from distemper, the second attempt produced two healthy animals—which the couple named Ken and Henry. When Melvin did pass away nearly two years later, in 2014, having two identical replicas helped ease the couple's grief. Even though it cost about $70,000 to clone Melvin, it was well worth it. "Melvin gave us a lot of pleasure," says Paula Dupont, "and this was less than the price of a new Land Cruiser."
As the technology improves, costs will tumble, making pet cloning more affordable for the mainstream.
The news has been filled recently with stories of celebrities such as Barbra Streisand or billionaire Barry Diller and his fashion icon wife, Diane von Furstenberg, spending big bucks to preserve their beloved pets—a practice New York magazine called "a laughable, extravagant waste of money." But cloning Fido isn't just for the ultra-wealthy anymore. Texas-based ViaGen now offers a domestic cloning service that will replicate Lassie for $50,000 and Garfield's kittens for a mere $25,000. While the exact number of cloned pets isn't known, the South Korean company says it has cloned about 800 pets while ViaGen has cloned about 100 cats and dogs. And as the technology improves, costs will tumble, making it more affordable for the mainstream, says Ron Gillespie, who heads PerPETuate, a Massachusetts-based outfit that collects and cryo preserves pet DNA, and works closely with ViaGen.
Even if the animals are genetic twins, biologists say, there are no guarantees their personalities will match, too.
While replicating Fido is becoming more feasible, should you? Animal rights organizations like The Humane Society and PETA are sharply critical of the practice, which is largely unregulated, and think it's outrageous to spend $50,000 or more to preserve Fluffy's genetic makeup when millions of cats and dogs are languishing in shelters and millions more are euthanized every year. And even if the animals are genetic twins, biologists say, there are no guarantees their personalities will match, too. Like humans, dogs' personalities are influenced by their environment and there are always variations in how the genes are expressed--although the Duponts say that Ken and Henry seem more like Melvin every day. "Their personalities are identical," says Paula.
Clones Ken and Henry, with Dr. Dupont and 10-year-old Melvin. Though all three dogs are genetic twins, their markings differ because the environment can influence how genes are expressed.
Still, the loss of a beloved pet can be incredibly painful, and in some cases, cloning can help deal with deep psychological wounds. When Monni Must's daughter died suddenly at age 28, the Michigan-based photographer adopted her child's black Lab, Billy Bean. As the dog got older and frailer, Must realized she couldn't handle losing her last link to her daughter—so she ponied up $50,000 to have the animal cloned. "I knew that I was falling apart," Must told Agence France-Presse. "The thought of Billy dying was just more than I could handle."
But these heated disputes miss what bioethicists believe is the real ethical dilemma—the fate of the female animals that provide the eggs and gestate the cloned puppies. "This issue tends to get framed as 'it's their personal choice, it's their money and they can do what they want with it,'" says Jessica Pierce, a bioethicist and author of Run, Spot, Run: The Ethics of Keeping Pets. "But this whole enterprise has all this collateral damage and behind-the-scenes impacts that people ignore. No one is talking about the dogs who are sacrificing themselves for this indulgence, and are suffering and being tormented just to have your clone."
"Even in the best-case scenarios, the cloned pet may go through several rounds of failed reproductive attempts—failed pregnancies, still births, and deformities."
Animal cloning, of course, is not new. Dolly, the sheep, made her debut in 1996 as the first cloned mammal. In 2005, Korea's Sooam Biotech cloned the first dog, and cloning horses and cows has become almost routine. Typically, the cloning process for dogs is fairly uncomplicated. It entails the use of a group of female dogs whose hormones are artificially manipulated with drugs to promote them to produce eggs. The eggs are then surgically harvested from donor dogs' ovaries. The immature eggs are stripped of their genetic information and then the pet's DNA is fused with the egg. When the embryo begins to develop, it is then transplanted to the womb of a surrogate dog.
However, cloning can have a high failure rate. When South Korea's Sooam Biotech lab cloned the first dog in 2005, there were 1000 failures—which means that number of eggs were fertilized and began to gestate, but at some point their development failed. And this figure doesn't include the number of dogs born with deformities serious enough that they are incompatible with life and need to be euthanized. "Even in the best-case scenarios, the cloned pet may go through several rounds of failed reproductive attempts—failed pregnancies, still births, and deformities," says Insoo Hyun, a bioethicist at Case Western Reserve University in Cleveland. "You can't do just one egg and one transfer. That won't happen. There is no guarantee that the very first time you will have a healthy animal. They're not miracle workers and you can't fight biology."
"You just have to let your pet go. It's all part of the experience."
But Ron Gillespie, who's been in the animal breeding business for decades, thinks these fears are overblown and that cloning is similar to the selective breeding that goes on all the time with cattle and even with champion racehorses. "We're really the victim of a lot of misinformation and misunderstanding," he says. "Right now, on average, we're dealing with three dogs: two that supply eggs and one to carry the embryo to term."
Still, this debate skirts the hard realities: dogs and cats simply have shorter lifespans than humans, and ethicists and animal rights activists believe there are better ways to deal with that grief. "You just have to let your pet go," says Hyun. "It's all part of the experience."
Sparklers produce a beautiful display of light and heat by burning metal dust, which contains iron. The recent work of Canadian and Dutch researchers suggests we can use iron as a cheap, carbon-free fuel.
Iron as a fuel
Iron is abundantly available and cheap. More importantly, the byproduct of burning iron is rust (iron oxide), a solid material that is easy to collect and recycle. Neither burning iron nor converting its oxide back produces any carbon in the process.
Iron oxide is potentially renewable by reacting with electricity or hydrogen to become iron again.
Iron has a high energy density: it requires almost the same volume as gasoline to produce the same amount of energy. However, iron has poor specific energy: it’s a lot heavier than gas to produce the same amount of energy. (Think of picking up a jug of gasoline, and then imagine trying to pick up a similar sized chunk of iron.) Therefore, its weight is prohibitive for many applications. Burning iron to run a car isn’t very practical if the iron fuel weighs as much as the car itself.
In its powdered form, however, iron offers more promise as a high-density energy carrier or storage system. Iron-burning furnaces could provide direct heat for industry, home heating, or to generate electricity.
Plus, iron oxide is potentially renewable by reacting with electricity or hydrogen to become iron again (as long as you’ve got a source of clean electricity or green hydrogen). When there’s excess electricity available from renewables like solar and wind, for example, rust could be converted back into iron powder, and then burned on demand to release that energy again.
However, these methods of recycling rust are very energy intensive and inefficient, currently, so improvements to the efficiency of burning iron itself may be crucial to making such a circular system viable.
The science of discrete burning
Powdered particles have a high surface area to volume ratio, which means it is easier to ignite them. This is true for metals as well.
Under the right circumstances, powdered iron can burn in a manner known as discrete burning. In its most ideal form, the flame completely consumes one particle before the heat radiating from it combusts other particles in its vicinity. By studying this process, researchers can better understand and model how iron combusts, allowing them to design better iron-burning furnaces.
Discrete burning is difficult to achieve on Earth. Perfect discrete burning requires a specific particle density and oxygen concentration. When the particles are too close and compacted, the fire jumps to neighboring particles before fully consuming a particle, resulting in a more chaotic and less controlled burn.
Presently, the rate at which powdered iron particles burn or how they release heat in different conditions is poorly understood. This hinders the development of technologies to efficiently utilize iron as a large-scale fuel.
Burning metal in microgravity
In April, the European Space Agency (ESA) launched a suborbital “sounding” rocket, carrying three experimental setups. As the rocket traced its parabolic trajectory through the atmosphere, the experiments got a few minutes in free fall, simulating microgravity.
One of the experiments on this mission studied how iron powder burns in the absence of gravity.
In microgravity, particles float in a more uniformly distributed cloud. This allows researchers to model the flow of iron particles and how a flame propagates through a cloud of iron particles in different oxygen concentrations.
Existing fossil fuel power plants could potentially be retrofitted to run on iron fuel.
Insights into how flames propagate through iron powder under different conditions could help design much more efficient iron-burning furnaces.
Clean and carbon-free energy on Earth
Various businesses are looking at ways to incorporate iron fuels into their processes. In particular, it could serve as a cleaner way to supply industrial heat by burning iron to heat water.
For example, Dutch brewery Swinkels Family Brewers, in collaboration with the Eindhoven University of Technology, switched to iron fuel as the heat source to power its brewing process, accounting for 15 million glasses of beer annually. Dutch startup RIFT is running proof-of-concept iron fuel power plants in Helmond and Arnhem.
As researchers continue to improve the efficiency of burning iron, its applicability will extend to other use cases as well. But is the infrastructure in place for this transition?
Often, the transition to new energy sources is slowed by the need to create new infrastructure to utilize them. Fortunately, this isn’t the case with switching from fossil fuels to iron. Since the ideal temperature to burn iron is similar to that for hydrocarbons, existing fossil fuel power plants could potentially be retrofitted to run on iron fuel.
This article originally appeared on Freethink, home of the brightest minds and biggest ideas of all time.
Leaps.org talks with Dr. Tom Oxley, founding CEO of Synchron, a company that's taking a unique - and less invasive - approach to "brain-computer interfaces" for patients with ALS and other mobility challenges.
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In our conversation, Dr. Oxley talks about “Bluetooth brain”; the critical role of AI in the present and future of BCIs; how BCIs compare to voice command technology; regulatory frameworks for revolutionary technologies; specific people with paralysis who’ve been able to regain some independence thanks to the Stentrode; what it means to be a neurointerventionist; how to scale BCIs for more people to use them; the risks of BCIs malfunctioning; organic implants; and how BCIs help us understand the brain, among other topics.
Dr. Oxley received his PhD in neuro engineering from the University of Melbourne in Australia. He is the founding CEO of Synchron and an associate professor and the head of the vascular bionics laboratory at the University of Melbourne. He’s also a clinical instructor in the Deepartment of Neurosurgery at Mount Sinai Hospital. Dr. Oxley has completed more than 1,600 endovascular neurosurgical procedures on patients, including people with aneurysms and strokes, and has authored over 100 peer reviewed articles.
Links:
Synchron website - https://synchron.com/
Assessment of Safety of a Fully Implanted Endovascular Brain-Computer Interface for Severe Paralysis in 4 Patients (paper co-authored by Tom Oxley) - https://jamanetwork.com/journals/jamaneurology/art...
More research related to Synchron's work - https://synchron.com/research
Tom Oxley on LinkedIn - https://www.linkedin.com/in/tomoxl
Tom Oxley on Twitter - https://twitter.com/tomoxl?lang=en
Tom Oxley TED - https://www.ted.com/talks/tom_oxley_a_brain_implant_that_turns_your_thoughts_into_text?language=en
Tom Oxley website - https://tomoxl.com/
Novel brain implant helps paralyzed woman speak using digital avatar - https://engineering.berkeley.edu/news/2023/08/novel-brain-implant-helps-paralyzed-woman-speak-using-a-digital-avatar/
Edward Chang lab - https://changlab.ucsf.edu/
BCIs convert brain activity into text at 62 words per minute - https://med.stanford.edu/neurosurgery/news/2023/he...
Leaps.org: The Mind-Blowing Promise of Neural Implants - https://leaps.org/the-mind-blowing-promise-of-neural-implants/
Tom Oxley