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In a recent paper, an international team of scientists identified how the Orion spacecraft's European Service Module (ESM) could be reused. Rather than letting them burn up in Earth's atmosphere, as planned, they recommend that the ESMs use their power and propulsion capability to conduct valuable scientific research.

Researchers from chemistry, biology, and medicine are increasingly turning to AI models to develop new hypotheses. However, it is often unclear on which basis the algorithms come to their conclusions and to what extent they can be generalized. A publicationnow warns of misunderstandings in handling artificial intelligence. At the same time, it highlights the conditions under which researchers can most likely have confidence in the models.

Do physicians or artificial intelligence (AI) offer better treatment recommendations for patients examined through a virtual urgent care setting? A new study shows physicians and AI models have distinct strengths. The study compared initial AI treatment recommendations to final recommendations of physicians who had access to the AI recommendations but may or may not have reviewed them.

Yes – it is well-documented that in many industries the design of products incorporates a plan for when the product will need to be replaced. A blatant example was in 1924 when an international meeting of lightbulb manufacturers decided to limit the lifespan of lightbulbs to 1,000 hours, so that consumers would have to constantly replace them. This artificial limitation did not end until CFLs and then LED lightbulbs largely replaced incandescent bulbs.

But – it’s more complicated than you might think (it always is). Planned obsolescence is not always about gimping products so they break faster. It often is – products are made so they are difficult to repair or upgrade and arbitrary fashions change specifically to create demand for new versions. But often there is a rational decision to limit product quality. Some products, like kid’s clothes, have a short use timeline, so consumers prefer cheap to durable. There is also a very good (for the consumer) example of true obsolescence – sometimes the technology simply advances, offering better products. Durability is not the only nor the primary attribute determining the quality of a product, and it makes no sense to build in expensive durability for a product that consumers will want to replace. So there is a complex dynamic among various product features, with durability being only one feature.

We can also ask the question, for any product or class of products, is durability actually decreasing over time? Consumers are now on the alert for planned obsolescence, and this may produce the confirmation bias of seeing it everywhere, even when it’s not true. A recent study looking at big-ticket appliances shows how complex this question can be. This is a Norwegian study looking at the lifespan of large appliances over decades, starting in the 1950s.

First, they found that for most large appliances, there was no decrease in lifespan over this time period. So the phenomenon simply did not exist for the items that homeowning consumers care the most about, their expensive appliances. There were two exceptions, however – ovens and washing machines. Each has its own explanations.

For washing machines, the researchers found another plausible explanation for the decrease in lifespan from 19.2 to 10. 6 years (a decrease of 45%). The researchers found that over the same time, the average number of loads a household of four did increased from 2 per week in 1960 to 8 per week by 2000. So if you count lifespan not in years but in number of loads, washing machines had become more durable over this time. I suspect that washing habits were formed in the years when many people did not have washing machines, and doing laundry was brutal work. Once the convenience of doing laundry in the modern era settled in (and perhaps also once it became more than woman’s work), people did laundry more often. How many times do you wear an article of clothing before you wash it? Lots of variables there, but at some point it’s a judgement call, and this likely also changed culturally over time.

For ovens there appears to be a few answers. One is that ovens have become more complex over the decades. For many technologies there is a trade-off between simple but durable, and complex but fragile. Again – there is a tradeoff, not a simple decision to gimp a product to exploit consumers. But there are two other factors the researchers found. Over this time the design of homes have also changed. Kitchens are increasingly connected to living spaces with a more open design. In the past kitchens were closed off and hidden away. Now they are where people live and entertain. This means that the fashion of kitchen appliances are more important. People might buy new appliances to make their kitchen look more modern, rather than because the old ones are broken.

If this were true, however, then we would expect the lifespan of all large kitchen appliances to converge. As people renovate their kitchens, they are likely to buy all new appliances that match and have an updated look. This is exactly what the researchers found – the lifespan of large kitchen appliances have tended to converge over the years.

They did not find evidence that the manufacturers of large appliances were deliberately reducing the durability of their products to force consumers to replace them at regular intervals. But this is the narrative that most people have.

There is also a bigger issue of waste and the environment. Even when the tradeoffs for the consumer favor cheaper, more stylish and fashionable, or more complex products with lower durability, is this a good thing for the world? Landfilled are overflowing with discarded consumer products. This is a valid point, and should be considered in the calculus when making purchasing decisions and also for regulation.  Designing products to be recyclable, repairable, and replaceable is also an important consideration. I generally replace my smartphone when the battery life gets too short, because the battery is not replaceable. (This is another discussion unto itself.)

But replacing old technology with new is not always bad for the environment. Newer dishwashers, for example, are much more energy and water efficient than older ones. Refrigerators are notorious energy hogs, and newer models are substantially more energy efficient than older models. This is another rabbit hole, exactly when do you replace rather than repair an old appliance, but generally if a newer model is significantly more efficient, replacing may be best for the environment. Refrigerators, for example, probably should be upgraded every 10 years with newer and more efficient models – so then why build them to last 20 or more?

I like this new research and this story primarily because it’s a good reminder that everything is more complex than you think, and not to fall for simplistic narratives.

The post Is Planned Obsolescence Real first appeared on NeuroLogica Blog.

Any advanced civilisation needs power. Don’t know about you but I’ve been camping lots, even wild camping but the experience is a whole lot easier if you have power! It’s the same for a long-term presence on the Moon (not that I’m likening my camping to a trip to the Moon!) but instead of launching a bunch of solar panels, a new paper suggests we can get power from the lunar regolith! Researchers suggest that the fine dusty material on the surface of the Moon could be melted to provide a type of crystals that can produce solar electricity! This would allow solar panels to be built on the Moon with only 1% of components sent from Earth!

"Just where is that extensive 5000 word longform apology from Adam Cifu over at Sensible Medicine, begging forgiveness for legitimizing Robert F. Kennedy, Jr?"

The post Doctors Who Fluffed RFK Jr.: Here’s What You Own So Far first appeared on Science-Based Medicine.

A research team is developing a 3D-printed skin imitation equipped with living cells in order to test nanoparticles from cosmetics without animal testing.

Physicists have made a novel discovery regarding the interaction of electronic excitations via spin waves. The finding could open the door to future technologies and advanced applications such as optical modulators, all-optical logic gates, and quantum transducers.

Physicists have made a novel discovery regarding the interaction of electronic excitations via spin waves. The finding could open the door to future technologies and advanced applications such as optical modulators, all-optical logic gates, and quantum transducers.

Frans de Waal was one of the world’s leading primatologists. He has been named one of TIME magazine’s 100 Most Influential People. The author of Are We Smart Enough to Know How Smart Animals Are?, as well as many other works, he was the C.H. Candler Professor in Emory University’s Psychology Department and director of the Living Links Center at the Yerkes National Primate Research Center.

Skeptic: How can we know what another mind is thinking or feeling?

Frans de Waal: My work is on animals that cannot talk, which is both a disadvantage and advantage. It’s a disadvantage because I cannot ask them how they feel and what their experiences are, but it is an advantage because I think humans lie a lot. I don’t trust humans. I’m a biologist but I work in a psychology department, and all my colleagues are psychologists. Most psychologists nowadays use questionnaires, and they trust what people tell them, but I don’t. So, I’d much rather work with animals where instead of asking how often they have sex, I just count how often. That’s more reliable.

I cannot ask them how they feel and what their experiences are, but it is an advantage because I think humans lie a lot. I don’t trust humans.

That said, I distinguish between emotions and feelings because you cannot know the feelings of any animals. But I can deduce them, guess at them. Personally, I feel it’s very similar with humans. Humans can tell me their feelings, but even if you tell me that you are sad, I don’t know if that’s the same sadness that I would feel under the same circumstances, so I can only guess what you feel. You might even be experiencing mixed feelings, or there may be feelings you’re not even aware of, and so you’re not able to communicate them. We have the same problem in non-human species as we do in humans, because feelings are less accessible and require guesswork.

That said, sometimes I’m perfectly comfortable guessing at the feelings of animals, even though you must distinguish them from the things you can measure. I can measure facial expressions. I can measure blood pressure. I can measure their behavior, but I can never really measure what they feel. But then, psychologists can’t do that with people either.

Skeptic: Suppose I’m feeling sad and I’m crying at some sort of loss. And then I see you’ve experienced a loss and that you’re crying … Isn’t it reasonable to infer that you feel sad?

FdW: Yes. And so that same principle of being reasonable can be applied to other species. And the closer that species is to you, the easier it is. Chimpanzees and bonobos cry and laugh. They have facial expressions— the same sort of expressions we do. So it’s fairly easy to infer the feelings behind those expressions and infer they may be very similar to our own. If you move to, say, an elephant, which is still a mammal, or to a fish, which is not, it becomes successively more difficult. Fish don’t even have facial expressions. That doesn’t mean that fish don’t feel anything. It would be a very biased view to assume that an animal needs to show facial expressions as evidence that it feels something.

At the same time, research on humans has argued that we have six basic emotions based on the observation that we have six basic facial expressions. So, there the tie between emotions and expressions has been made very explicit.

In my work, I tend to focus on the expressive behavior. But behind it, of course, there must be similar feelings. At least that’s what Darwin thought.

Chimpanzees and bonobos cry and laugh. They have facial expressions—the same sort of expressions we do.

Skeptic: That’s not widely known, is it? Darwin published The Expression of the Emotions in Man and Animals in 1872, but it took almost a century before the taboo against it started to lift.

FdW: It’s the only book of Darwin’s that disappeared from view for a century. All the other books were celebrated, but that book was placed under some sort of taboo. Partly because of the influence of the behaviorist school of B.F. Skinner, Richard Herrnstein, and others, it was considered silly to think that animals would have the same sort of emotions as we do.

Biologists, including my own biology professors, however, found a way out. They didn’t need to talk about emotions because they would talk about the function of behavior. For example, they would not say “the animal is afraid” but rather that “the animal escapes from danger.” They phrased everything in functional terms—a semantic trick that researchers still often use.

If you were to say that two animals “love each other” or that “they’re very attached to each other,” you’re likely to receive significant criticism, if not ridicule. So why even describe it that way? Instead, you objectively report that the animals bonded and they benefited from doing so. Phrasing it functionally has, well, functioned as a sort of preferred safe procedure. But I have decided not to employ it anymore.

Skeptic: In most of your books you talk about the social and political context of science. Why do you think the conversation about animal emotions was held back for almost a century?

FdW: World War II had an effect on the study of aggression, which became a very popular topic in the 1960s and 70s. Then we got the era of “the selfish gene” and so on. In fact, the silencing of the study of mental processes and emotions in animals started before the war. It actually started in the 1920s and 30s. And I think it’s because scientists such as Skinner wanted the behavioral sciences to be like the physical sciences. They operated under the belief that it provided a certain protection against criticism to get away from anything that could be seen as speculation. And there was a lot of speculation going on in the so-called “depth psychologies,” some of it rather wild.

However, there are a lot of invisible things in science that we assume to be true, for example, evolutionary theory. Evolution is not necessarily visible, at least most of the time it isn’t, yet still, we believe very strongly that evolution happened. Continental drift is unobservable, but we now accept that it happened. The same principle can be applied to animal feelings and animal consciousness. You assume it as a sort of theory and see if things fit. And, research has demonstrated that things fit quite well.

Skeptic: Taking a different angle, can Artificial Intelligence (AI) experience emotions? Was IBM’s Watson “thrilled” when it beat Ken Jennings, the all-time champion of Jeopardy!? Well, of course not. So what do you think about programming such internal states into an artificial intelligence?

FdW: I think researchers developing AI models are interested in affective programs because of the way we biologists look at emotions. Emotions trigger actions that are adaptive. Fear is an adaptive emotion because it may trigger certain behaviors such as hiding, escaping, etc., so we look at emotions as being the stimulus that elicits certain specific types of behavior. Emotions organize behavior, and I think that’s what the AI people are interested in. Emotions are actually a very smart system, compared to instincts. Someone might argue that instincts also trigger behavior. However, while instincts are inflexible, emotions are different.

Let’s say you are afraid of something. The emotion of fear doesn’t trigger your behavior. An emotion just prepares the body for certain behaviors, but you still need to make a decision. Do I want to escape? Do I want to fight? Do I want to hide? What is the best behavior under these circumstances? And so, your emotion triggers the need for a response, and then your cognition takes over and searches for the best solution. It’s a very, very nice system and creators of AI models are interested in such an organizational system of behavior. I’m not sure they will ever construct the feelings behind the emotions—it’s not an easy thing to do—but certainly organizing behavior according to emotions is possible.

Skeptic: Are emotions created from the bottom-up? How do you scale from something very simple up to much higher levels of complexity?

FdW: Humans have a complex emotional system—we mix a lot of emotions, sort them, regulate them. Well, sometimes we don’t actually regulate them and that is something that really interests me in my work with animals. What kind of regulation do they have over their emotions? People often say that we have emotions and we can suppress them, whereas animals have emotions that they have to follow. However, experiments have demonstrated that’s not really the case. For example, we give apes the marshmallow test. Briefly, that’s where you put a child in a situation in which he or she can either eat a marshmallow immediately, or wait and get a second one later. Well, kids are willing to wait for 15 minutes. If you do that same experiment with apes, they’re also willing to wait for 15 minutes. So they can control their emotions. And like children, apes seek distractions from the situation because they’re aware that they’re dealing with certain specific emotions. Therefore, we know that apes have a certain awareness of their emotions, and they have a certain level of control over them. This whole idea that regulation of emotions is specifically human, while animals can only follow them, is wrong.

The emotional farewell between the chimpanzee Mama and her caretaker, Jan van Hooff (Source)

That’s actually the reason I wrote Mama’s Last Hug. The starting point of the book was when Prof. Jan Van Hoff came on TV and showed a little clip that everyone has seen by now, where he and a chimpanzee called Mama hug each other. Both he and I were shocked when the clip went viral and generated such a response. Many people cried and wrote to us to say they were very influenced by what they saw. The truth is Mama was simply showing perfectly normal chimpanzee behavior. It was a very touching moment, obviously, but for those familiar with chimps, there was nothing surprising about the behavior. And so, I wrote this book partly because I noticed that people did not know how human-like the expressions of the apes are. Embracing, and hugging, and calming someone down, and having a big smile on your face are all common behaviors seen in primates and are not unique to humans.

Skeptic: Your famous experiment with capuchin monkeys, where you offer them a grape or a piece of cucumber, is along similar lines. When the monkey got the cucumber instead of the grape, he got really angry. He threw the cucumber back, then proceeded to pound on the table and the walls … He was clearly ticked off at the injustice he felt had been done him, just as a person would be.

A still from the famous capuchin monkey fairness experiment (Source: Frans de Waal’s TED Talk)

FdW: The funny thing is that primates, including those monkeys, have all the same expressions and behaviors as we do. And so, they shake their cage and throw the cucumber at you. The behavior is just so extremely similar, and the circumstances are so similar … I always say that if related species behave in a similar way under similar circumstances, you have to assume a shared psychology lies behind it. It is just not acceptable in this day and age of Darwinian philosophy, so to speak, to assume anything else. If people want to make the point that it’s maybe not similar, that maybe the monkey was actually very happy while he was throwing the stuff … they’ll have a lot of work to do to convince me of that.

Skeptic: What’s the date of the last common ancestor humans shared with chimps and bonobos?

FdW: It’s about 6 million years ago.

Skeptic: So, these are indeed pretty ancient emotions.

FdW: Oh, they go back much further than that! Like the bonding mechanism based on oxytocin—the neuropeptides in bonding go back to rodents, and probably even back to fish at some point. These neuropeptide circuits involved in attachment and bonding are very ancient. They’re even older than mammals themselves.

Skeptic: One emotion that seems very uniquely human is disgust. If a chimp or Bonobo comes across a pile of feces or vomit, what do they do?

FdW: When we do experiments and put interesting food on top of feces and see if the chimp is willing to take it, they don’t. They refuse to. The facial expression of the chimps is the same as we have for disgust—with the wrinkly nose and all that. Chimps also show it, for example, when it rains. They don’t like rain. And they show it, sometimes, in circumstances where they encounter a rat. So, some of these emotions have been proposed as being uniquely human, but I disagree. Disgust, I think, is a very old emotion.

If related species behave in a similar way under similar circumstances, you have to assume a shared psychology lies behind it.

Disgust is an interesting case because we know that both in chimps and humans a specific part of the brain called the insula is involved. If you stimulate the insula in a monkey who’s chewing on good fruit, he’ll spit it out. If you put humans in a brain scanner and show them piles of feces or things they don’t want to see, the insula is likewise activated. So here we have an emotion that is triggered under the same circumstances, that is shown in the face in the same way, and that is associated with the same specific area in the brain. So we have to assume it’s the same emotion across the board. That’s why I disagree with those scientists who have declared disgust uniquely human.

Skeptic: In one of your lectures, you show photos of a horse wrinkling up its nose and baring its teeth. Is that a smile or something else?

FdW: The baring of the teeth is very complex because in many primates it is a fearful signal shown when they’re afraid or when they’re intimidated by dominance and showing submission. So, we think it became a signal of appeasement and non-hostility. Basically saying, “I’m not hostile. Don’t expect any trouble from me.” And then over time, especially in apes and then in humans, it became more and more of a friendly signal. So it’s not necessarily a fear signal. Although we still say that if someone smiles too much, they’re probably nervous.

Skeptic: Is it true that you can determine whether someone’s giving you a fake smile or a real smile depending on whether the corners of their eyes are pulled down?

FdW: Yes, this is called the Duchenne smile. Duchenne was a 19th century French neurologist. He studied people who had facial paralysis, meaning they had the muscles, but they could not feel anything in their face. This allowed him to put electrodes on their faces and stimulate them. He methodically contracted different muscles and noticed he could produce a smile on his subjects. Yet he was never quite happy with the smile—it just didn’t look real. Then one day he told a subject a joke. A very good joke, I suppose, and all of a sudden, he got a real full-blown smile. That’s when Duchenne decided that there needs to be a contraction and a narrowing of the eyes for a smile to be a real smile. So, we now distinguish between the fake smile and the Duchenne smile.

Skeptic: So, smiling involves a whole complex suite of muscles. Is the number of muscles in the face of humans higher than other species?

FdW: Do we have far more muscles in the face than a chimpanzee? I’ve heard that all my life. Until people who analyze faces of chimpanzees found exactly the same number of muscles in there as in a human face. So that whole story doesn’t hold up. I think the confusion originated because when we look at the human face, we can interpret so many little details of it—and I think chimps do that with each other too—but when we look at a chimp, we only see the bold, more flamboyant expressions.

Skeptic: Have we evolved in the way we treat other animals?

FdW: The Planet of the Apes movies provide a good example of that. I’m so happy that Hollywood has found a way of featuring apes in movies without the involvement of real animals. There was a time when Hollywood had trainers who described what they do as affective training. Not effective, but affective. They used cattle prods, and stuff like that. People used to think that seeing apes dressed up or producing silly grins was hilarious. No longer. We’ve come a long way from that.

Skeptic: The Planet of the Apes films show apes that are quite violent, maybe even brutal. You actually studied the darker side of emotion in apes. Can you describe it?

FdW: Most of the books on emotions in animals dwell on the positive: they show how animals love each other, how they hug each other, how they help each other, how they grieve … and I do think that’s all very impressive. However, the emotional life of animals—just like that of humans— includes a lot of nasty emotions.

We do not treat animals very well, certainly not in the agricultural industry.

I have seen so much of chimpanzee politics that I witnessed those very dark emotions. They can kill each other. One of the killings I’ve witnessed was in captivity. So, when it happened, I thought maybe it was a product of captivity. Some colleagues said to me, “What do you expect if you lock them up?” But now we know that wild chimpanzees do the exact same thing. Sometimes, if a male leader loses his position or other chimps are not happy with him, they will brutally kill him. At the same time, chimpanzees can also be good friends, help each other, and defend their territory together—just like people who on occasion hate each other or even kill each other, but otherwise coexist peacefully.

The more important point is that we do not treat animals very well, certainly not in the agricultural industry. And we need to do something about that.

Skeptic: Are you a vegetarian or vegan?

FdW: No. Well, I do try to avoid eating meat. For me, however, the issue is not so much the eating, it’s the treatment of animals. As a biologist, I see the cycle of life as a natural thing. But it bothers me how we treat animals.

Skeptic: What’s next for you?

FdW: I’m going to retire! In fact, I’ve already stopped my research. I’m going to travel with my wife, and write.

Dr. Frans de Waal passed away on March 14, 2024, aged 75. In Loving Memory.

Sometimes, a brief update is all that is needed to keep the public interested in major projects. That's precisely what John Baker and James Keane of NASA's Jet Propulsion Laboratory provided to the 56th annual Lunar and Planetary Science Conference held in Texas last month. Their brief paper showcased the ongoing development of the Endurance autonomous rover, which was more thoroughly fleshed out in a massive 296-page mission concept study back in 2023. But what has the team been up to since then?

Mars is a cold, dry desert, but it could be possible to rapidly increase the temperature of the planet by releasing particles into the atmosphere. Researchers investigated two possible chemicals: graphene or aluminum. With just two liters per second of release, we could double the Mars greenhouse effect, raising its temperature by +5 Kelvin in only 1.1 years. Once the chemical release is stopped, the planet would cool back to its normal state.

The way bonobos combine vocal sounds to create new meanings suggests the evolutionary building blocks of human language are shared with our closest relatives

Researchers developed a manufacturing technique that rapidly generates large quantities of nanoparticles coated with drug-delivering polymers, which hold great potential for treating cancer. The particles can be targeted directly to tumors, where they release their payload while avoiding many of the side effects of traditional chemotherapy.

A powerful new software platform is set to transform biomedical research by allowing scientists to conduct complex and customized data analyses without advanced programming skills. The web-based platform enables scientists to analyze and visualize their own data independently through an intuitive, interactive interface.

While medical centers use ultrasound daily, so far this technology has not been capable of observing body tissues at the scale of cells. Physicists have now developed a microscopy technique based on ultrasound to reveal capillaries and cells across living organs -- something that wasn't possible before.

New research shows that Sat Nav systems are helping keep older drivers on the roads for longer. The study reveals that over 65s with a poorer sense of direction rely more on help from GPS navigation systems such as Sat Nav or smartphone maps. Those using GPS tended to drive more frequently -- suggesting that the technology helps older people maintain driving independence.

New research shows that Sat Nav systems are helping keep older drivers on the roads for longer. The study reveals that over 65s with a poorer sense of direction rely more on help from GPS navigation systems such as Sat Nav or smartphone maps. Those using GPS tended to drive more frequently -- suggesting that the technology helps older people maintain driving independence.

Ancient humans living in what is now Ukraine 400,000 years ago may have practised or taught tool-making techniques using mammoth tusks, a softer material than bone

A widely used artificial sweetener increases brain activity in regions involved in appetite, suggesting it makes people hungrier