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Deep Future

Implementing Science Fiction

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Helium Airships (Short)

Short opinion piece about these helium airships and the need to preserve helium.

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Helium Airships (Short)
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 Back before there were memes as we know them, the meme for a disaster was the Hindenburg. The Hindenburg was this giant Zeppelin, an Airship filled with hydrogen gas that’s lighter than air. Like a helium balloon. So it would just float but it had a huge passenger compartment. This is back in. 1937, so 80 years ago, the Hindenburg famously ignited and turned into a giant flame in the sky and scared the shit out of everyone forever and these things have not gotten a lot of attention since then.

I think they’re cool. But there’s a real problem with trying to make a lot of hydrogen next to actual humans and somehow imagine that it’s going to be safe. So since then, people have played around with things like blimps and things that don’t have passengers and stuff like that. But these things don’t, aren’t very popular. I have seen a little bit of news lately about this group called Lighter Than Air Research, which is trying to create air ships today.

These are in part probably safer because they don’t fill them with hydrogen, they fill them with helium. So this is a massive craft. They call Pathfinder one. I’m going to link to an article in IEEE Spectrum about this and I’m just going to give you, the highlights.

Pathfinder 1 is 120 meters, long, 20 meters in diameter. I think biggest Goodyear blimp right now is 75 meters. So this is like the biggest air ship ever made. I think.

LTA Research staff maneuver Pathfinder 1 while the airship is under construction at the company’s Moffett Field facility, near San Francisco.  LTA RESEARCH

The idea is to carry about four tons of cargo. It sounds like a lot, but if you’re not familiar with a ton, four tons is about one Humvee. Or, maybe four tons might be a good size Amazon delivery van fully loaded. That’s four tons of cargo. There’s still, also a crew, there’s what’s called water ballast, which is, water you carry for weight. So if you have a problem, descending too fast, you could drop the water and it would slow your descent to make it safe. And then fuel, cause you still need fuel in order to propel the thing. The idea is this thing would go 65 knots. So that’s about 120 kilometers an hour, which I think about 70 miles an hour. That’s about as fast as these things seem to ever really be able to go, but the, average cruising speed probably maxes out at more like two-thirds of that. This is a modern Airship probably worth revisiting it to see if it can be done better. The old ones were built with, a lot of wood. They were built with a lot of aluminum which is, good strength to weight ratio, but incendiary. In the sense that it melts at a low temperature. Modern crafts could be built with carbon fiber and titanium and all these modern materials that we can coat to make them less inflammatory,

So that’s the frame and then you also have this covering and the coverings gonna be made of not cotton the way we used to do it, but we’re going to make that out of some modern polyvinyl from DuPont called Tedlar. So obviously those materials have advanced a lot in our lifetime. If you sense a little bit of a dubiousness in my voice, I’m going to tell you why that is in a little bit here.

That’s the basic idea. There’s also a lot that’s advanced in weather prediction. There’s a lot that’s advanced in electric motors for propulsion. There’s a lot that’s advanced in autonomous flying and driving. And so we have lidars and we have things that can figure out how to make these things dramatically safer. I buy all that. Here’s what bothers me.

The world has unlimited hydrogen on earth, more or less. We have a lot. We can make more. Hydrogen’s awesome. What the world does not have on earth is very much helium. We have very little helium. We have very little helium left. We’ve been able to find a few new helium mines in the last decade, but there’s just not much of it.

And that is a super valuable element that we really need for lots of different things. We need it for making computer chips. We need it for figuring out how to make fusion reactors and things like that. We’re just running out of helium and I’m pretty disappointed in any plan that involves using a lot of helium as it’s lighter than air substance.

Because of that, I’m really having a hard time getting excited about these modern airships that want to use helium. Helium is not flammable, so it won’t burn up the way that hydrogen does. If you remember your periodic table, if you look at the very beginning, the reason you’ve probably heard of hydrogen and helium is they’re numbers one and two. They are the lowest weight elements in the world.

And hydrogen is a lot lighter than helium, but it also, combined with oxygen just fucking blows up, which is great, amazing amount of energy in hydrogen. We have a lot of use for that. But what’s happening with helium is, we’re just letting it go. We’re giving it away in party balloons which is a terrible disaster. It makes me practically cry when I see helium balloons, which is sad. I grew up with them. I love them. I want my kid to have them. They’re fun, but that’s a waste of good helium. We just don’t have enough and we don’t have a way of making more. And that’s the really important thing to understand.

Until we get real good control of fusion reactors, and have extra ones to deploy at the job, we don’t even have any way of making helium. When you do have a fusion reactor, it makes a little bit of helium, but not much. Maybe someday fusion reactors will be able to be designed to put out a lot of helium for balloons, but right now they don’t.

They don’t do anything right now, but they don’t do that. So the point is. We should be really careful about how we deplete the helium that we do have here on earth. Maybe someday we’ll get a highway to the moon and we’ll be able to go get a lot more helium. But right now this is this is a really important resource that I think we should be careful about. I don’t want to see it used on airships, which require a lot.

Okay. Second thing. I tried playing with helium before, and we do use a lot of helium for weather balloons and things like that. Please use hydrogen. It’s okay if a weather balloon burns. A helium balloon that’s big, it’s just a really hard to manage. Putting a lot of lighter than air gas into a balloon to get it off the ground and float it up into the atmosphere. It’s just unwieldy. I only have a little bit of experience with this early days at Blue Origin, we tried to make some giant helium balloons just to see what potential might be in that. It’s hard cause, you gotta make the balloon out of something light and not too structural. The airships have a frame. We didn’t have frames. We just had big balloons that we made. We made them really light. But, you’ve got to bring tanks and tanks of helium to go, then fill that up to launch it wherever you are. The process of filling it up, it wants to float away while you’re filling it, and you think you could just keep loading gas into it the way that you would with a party balloon, but in practice, the more you load into it, the harder it is to tether the thing and keep the wind from blowing it away.

And maybe you could do that indoors and then have a ceiling the launches, it’s pretty impractical to do. And, with travel, you want to be able to go a lot of different places, obviously with an Airship, you’d try to fill it once and then use your electric motors to move that thing around, up and down and maybe. I give up as little helium as possible, but that’s the other thing about helium. It’s really hard to contain. It leaks through almost everything. It is a very small molecule.

I’m putting this out there just to let you guys know how I feel about it. From what I understand to date. I have not met or talked to the folks that are working on this at Lighter Than Air Research. If you know them, please introduce me and I’m sure that they can tell me how they think about it. I’m sure they have some other perspective and if I get that in my head, I’ll let you know if I change my mind.

Tags: Airships, Helium, Short

Top Sleep Doctor’s Brain Dump – Michael Breus, Ph.D

Sleep is the most natural process that you can do other than breathing. Like breathing, we don’t need technology to help us sleep. The reason many people don’t sleep is because of what’s between their ears – their mental stability, anguish, or stress. Do you fall asleep easily or does the slightest noise wake you up? Dr. Michael Breus, gives me a full brain dump as I try to learn everything I can about sleep in one session. He takes on taboo ideas like polyphasic sleep and the role of nutrition and the microbiome in having a good night’s rest, how melatonin, CBD, and some pharmaceutical interventions such as Zolpidem affect the sleep process, how much sleep we should have, and more.

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Top Sleep Doctor’s Brain Dump – Michael Breus, Ph.D
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Tags: Sleep

Urban Transportation & the Truth about Garbage — Assaf Biderman

About two billion people that are going to move into cities by 2050 and with that growth, the demand for efficient transportation is going to increase dramatically. In an era where we’re already seeing inefficiencies in urban mobility having a massive impact on the economy, public health and environmental health, it’s hard to imagine a future of transportation that doesn’t border utter chaos. Cognizant of these projected problems, Assaf Biderman, is working on solutions that harness the power of artificial intelligence, robotics and other technologies that are already within our reach. Assaf is founder and CEO of Superpedestrian, founder of the Senseable City Lab at MIT and an awesome guy to learn from. I’ll admit, I have been dubious about the rentable scooter business, but Assaf has me convinced there’s an important place for these things in our cities. If you have any interest in urban mobility, this conversation is important.

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Urban Transportation & the Truth about Garbage — Assaf Biderman
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Tags: Transportation, Waste

Reimagining Entertainment, Work & Education — Brent Bushnell

Brent Bushnell is one of the most positive people I know. He’s created Two Bit Circus to reimagine how the newest developments in computing technology can shape the future of entertainment, work, education and human interaction. Brent grew up in the house that built Atari and has been a lifelong hands-on maker that brings a prototyping mindset to everything he does. Listen in to this candid and eclectic conversation and learn about the mass of possibilities that we can bring into fruition with just a little stretch of our imagination.

Deep Future
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Reimagining Entertainment, Work & Education — Brent Bushnell
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Tags: Education

Kids Building Dyson Swarms — Levi Hurt

Probably whatever you were doing with your life as a kid isn’t as cool as building a Dyson swarm. 12 year old Levi Hurt has already decided to devote his life to doing so.

Levi is a delightful kid. It will warm your heart to hear his curiosity and excitement about these ideas. Even with my antagonistic questioning, his sense of wonder is infectious.

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Kids Building Dyson Swarms — Levi Hurt
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Tags: Space

Exosomes, Stem Cells, Ketamine & VR — Dr. Melissa Selinger

My friend, Dr. Melissa Selinger is a Doctor of Neuropsychopharmacology who has done actual research on using psychedelics and virtual reality for treating things like depression, anxiety, and PTSD. A huge frontier where there are all kinds of potential, and very little actual scientific research has been done here so far. It’s an exciting frontier to be able to help a lot of people who we don’t have any real idea how to help otherwise.

I’m super thrilled about that and the potential for it. It’s great to get to talk to somebody who knows what state of the art there is. Melissa knows a lot about all kinds of things that I don’t know anything about. As you guys know, part of what I love to be able to do is sit down with somebody who has a lot of knowledge and experience in something that I don’t know about, pick their brain, try and break it down, see if I can understand it and take you guys along for the ride so that we can all learn.

Carcinogens, teratogens, exosomes, stem cells, cytokines, CRISPR, gene editing, all these are things that we talk about in this conversation. A lot of it is me trying to get her to explain in layman’s terms what this stuff is and how it works. There is incredible potential here. If you were ever interested in what’s possible in stem cell therapy, you’re going to want to learn about exosomes and her experience with that. A couple of biotech startups had some ups and downs in that and learned a lot. I’m thrilled to be sharing our conversation with you. Enjoy this episode.

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Exosomes, Stem Cells, Ketamine & VR — Dr. Melissa Selinger
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Tags: Artificial Intelligence, Birth Tissue, Exosomes, mRNA vaccine, Psychedelics, Virtual Reality

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