Science

WTF Fun Fact 13458 – Taxidermied Bird Drones

Researchers often look to nature for inspiration when designing machines and devices – now scientists from the New Mexico Institute of Mining and Technology are taking this concept a step further, building taxidermied bird drones.

Why use taxidermy bird drones?

The idea might seem disturbing or bizarre at first. A decade ago, a Dutch artist, Bart Jansen, had stirred conversation by turning a deceased, taxidermied cat into a furry quadcopter. However, the researchers from New Mexico Tech have a practical reason for their unique approach to creating ornithopters—drones that fly by flapping their wings like a bird.

Their aim is to harness the flight capabilities of birds whose lightweight bodies and flexible feathers give them remarkable maneuverability that outmatches the most sophisticated aircraft we’ve built.

According to a study presented at the American Institute of Aeronautics and Astronautics SciTech 2023 Forum, using actual bird parts can offer significant advantages over artificial materials engineered to mimic bird behavior.

The researchers believe that their bird-built drones can effectively camouflage in the air, being more likely to be ignored due to their realistic appearance. These drones may not excel in performing complex aerial maneuvers like a living bird, but they could become an essential tool in espionage or wildlife study.

From stealth to espionage

One unique advantage of using bird feathers in these taxidermied bird drones is the stealth capabilities they offer. Unlike the noticeable hum of an electric motor propelling a typical drone, a bird drone with flapping feathered wings could potentially sneak up on targets quietly without alarming them. This would be particularly useful in studying and observing wildlife in their natural habitats, without disturbing their normal behaviors. Military applications could also benefit from the stealth properties of these feathered drones, providing an innovative approach to surveillance and reconnaissance.

The current bird-built drones, however, have limitations. Unlike real birds that use their muscles to flex and shape their wings for executing intricate aerial maneuvers, these drones can only flap their stiff wings up and down to stay airborne. The challenge for the researchers lies in advancing the technology to imbue their bird drones with greater agility in flight.

The research from New Mexico Tech presents an intriguing intersection of biology and technology, pushing the boundaries of how we perceive and utilize drones. As they continue to refine their design, these bird-built drones could revolutionize areas from espionage to wildlife observation. Yet, ethical considerations, including the use of taxidermied birds, will undoubtedly be part of the ongoing discourse as this technology evolves.

— WTF fun facts

Source: “Researchers Are Turning Taxidermied Birds Into Drones” — Gizmodo

WTF Fun Fact 13457 – Crocodile’s Virgin Birth

In a scientific breakthrough, researchers have recorded the first known instance of a crocodile’s virgin birth. The female American crocodile lived in isolation for 16 years at a zoo in Costa Rica.

What’s the story behind the crocodile’s virgin birth?

This incredible discovery has revealed a surprising reproductive capability in crocodiles and could provide insight into their prehistoric relatives.

In 2018, the female American crocodile, despite her solitary existence, laid 14 eggs in her enclosure, which is not an uncommon occurrence among captive reptiles. However, things took an unexpected turn when, after three months of incubation, scientists discovered a fully formed, stillborn baby crocodile in one of the eggs.

Genetic analysis of the fetus revealed that this was a result of facultative parthenogenesis (FP), a type of reproduction that occurs without the genetic contribution of males. Essentially, the mother’s egg cell developed into a baby without being fertilized by a male’s sperm cell.

Facultative parthenogenesis explained

In FP, the process of egg cell formation divides a precursor cell into four cells. One of these becomes the egg cell, retaining key cellular structures and the gel-like cytoplasm, while the others contain extra genetic material. Interestingly, one of these cells acts like a sperm cell, fusing with the egg to facilitate fertilization.

While this type of reproduction, colloquially known as a “virgin birth,” has been documented in various species of fish, birds, lizards, and snakes, this is the first-known instance in a crocodile.

The American crocodile is a vulnerable species at risk of extinction. According to one hypothesis, FP may be more prevalent among species on the brink of extinction. The discovery of this unusual reproductive strategy could have significant implications for the conservation of endangered crocodile populations.

A glimpse into the prehistoric past

This astounding discovery in Costa Rica could also open new windows into the ancient past. As the study suggests, the “virgin birth” phenomenon might offer insights into the possible reproductive capabilities of extinct archosaurian relatives of crocodilians and birds, specifically members of Pterosauria and Dinosauria that roamed the earth during the Triassic Period about 250 million years ago.

— WTF fun facts

Source: “Scientists find crocodile ‘virgin birth’ at Costa Rica zoo” — Reuters

WTF Fun Fact 13453 – Shark GPS Tracker Draws Shark

A great white shark with a GPS tracker drew a shark in the waters off the eastern coast of North America. Was he “punking” researchers? Telling us he knows what we’re up to? Do sharks mysteriously swim in shark-shaped patterns? Or are we just seeing what we want to see?

Don’t answer that – it’s not as funny if you do.

The unconventional artist

Art and creativity are typically deemed human endeavors. But perhaps they also belong to the great white shark who unwittingly sketched a self-portrait, using tracking data as its brush.

Our artist is a mature male great white shark, named Breton by the OCEARCH team. He’s a frequent wanderer off the Atlantic Ocean coast of Long Island, New York. As part of the shark tracking initiative, he carries a tracker affixed to his dorsal fin. This tracker collects and relays data whenever the shark surfaces, providing an almost real-time map of the shark’s movement.

Did the shark GPS tracker draw a shark?

A May 2022 observation of Breton’s tracking data offered an unexpected delight to the researchers. It seemed as though Breton had swum in a pattern that mirrored the outline of a great white shark when seen from above.

OCEARCH shared the data on its social media, and the internet quickly took notice.

The tracking path captured not only the body’s curve but also the classic angular shape of the tail and the pectoral fins. It sure looks like a shark!

Coincidence or Design?

As fascinating as Breton’s journey may seem, it is essential to underline that the ‘self-portrait’ was purely coincidental. Sharks navigate based on instincts and sensory information, not a predetermined design. Sorry if you needed to be told that – but people have been studying sharks for a long time. That doesn’t mean we can’t enjoy the coincidence!

While the artistic byproduct is captivating, the primary purpose of tracking sharks like Breton is conservation. By learning about migration patterns, feeding areas, and breeding grounds, scientists can devise effective strategies to safeguard these creatures. The knowledge gained from such tracking can inform the establishment of marine protected areas and fishing regulations.

The good news is that Breton’s self-portrait can serve as a symbol for raising awareness about the threats facing great white sharks.

Issues like overfishing, habitat degradation, and climate change pose significant threats to these magnificent creatures. Breton’s story is an opportunity to engage the public and rally support for shark conservation.

— WTF fun facts

Source: “Great White Shark Accidentally Draws Self-Portrait With Tracking Path” — The Inertia

WTF Fun Fact 13451 – Shape-Shifting Robot

You’ve seen robotic dogs, humanoid robots that can do backflips, etc. – but have you seen the new shape-shifting robots? Just what the world needs, right? Well…maybe!

Do shape-shifting robots really exist?

They do exist, but they’re small – and they’re certainly not a threat. Although we don’t exactly love the headline from EurekAlert “Watch this person-shaped robot liquify and escape jail, all with the power of magnets.” But whatever. Like all robots, they’re pretty cool, aside from their (granted, far-fetched) potential to destroy us all.

This robot can indeed transform, liquefy itself, slip into the smallest crevices, and then reassemble with absolute precision. The shape-shifting robot creators drew inspiration from a sea cucumber.

What do a sea cucumber and a shape-shifting robot have in common?

Sea cucumbers have a unique ability—they can alter their stiffness rapidly and reversibly. This is the fascinating biological phenomenon that the researchers hoped to replicate in their robotic system.

Traditional robots, with their rigid bodies, lack the flexibility to navigate small spaces. There are “softer” robots, but while they’re more pliable, are often weaker and harder to control. So, to overcome these challenges, the team aimed to create a robot that could oscillate between being a solid and a liquid.

The new breed of robot is an alloy of gallium—a metal with a low melting point—and includes embedded magnetic particles. The particles allow the robot to respond to magnetic fields, which scientists can use to control its movement and induce changes in its state—from solid to liquid and vice versa.

The team from Carnegie Mellon University christened their groundbreaking creation the “magnetoactive solid-liquid phase transitional machine.” Catchy!

The power of transformation

In a magnetic field, the robot can jump, stretch, climb walls, and even solder a circuit board. Its most impressive trick? The ability to liquefy and squeeze itself out of a mock prison—only to solidify once again on the outside. When in solid state, this robot can bear weights 30 times its own, demonstrating remarkable strength and flexibility.

Interestingly, the shapeshifting robot might have potential applications in the medical field. In a proof-of-concept experiment, the robot successfully removed a ball from a model of a human stomach. It quickly moved to the ball, melted around it, reformed, and exited the model stomach—ball in tow.

Although gallium was the metal of choice in these experiments, other metals could be introduced to adjust the melting point for real-life applications.

Future applications

Looking ahead, the gallium robots could serve a variety of purposes. From assembling and repairing hard-to-reach circuits to acting as a universal screw that melts and reforms to fit any socket, the possibilities seem endless.

The technology might have significant biomedical applications as well. For instance, these robots could deliver drugs inside a patient’s body or remove foreign objects. However, before any in-human application, tracking the robot’s position within a patient’s body is a hurdle scientists need to overcome.

Who knows, maybe a doctor will ask you to swallow a shape-shifting robot someday. What a thing to look forward to!

Wanna see the robot melt and reconstitute? Someone set it to some soothing music on YouTube:

— WTF fun facts

Source: “This Shape-Shifting Robot Can Liquefy Itself and Reform” — Smithsonian Magazine

WTF Fun Fact 13450 – The Hunter Gatherer Woman

Archaeologists have discovered the hunter-gatherer woman. So while our general assumption is that men took on the role of hunters in prehistoric times while women gathered resources and cared for offspring, recent discoveries are challenging this age-old belief. We now have a new picture of gender roles in prehistoric societies.

Archaeological insights into the hunter gatherer woman

The discovery of a 9,000-year-old female skeleton buried with her hunting toolkit in the Andean highlands suggests women might have hunted big game right alongside men. The burial site, located in what is now Peru, was rich in hunting artifacts, from spear points to butchering tools.

Upon examining the skeleton and associated tools, archaeologists concluded that this prehistoric woman was likely a hunter. This conclusion stemmed from the diversity of hunting tools buried alongside her, which would have been used to kill and butcher large game, not just small animals.

Broadening perspectives

The discovery sparked a wider investigation, prompting researchers to reanalyze burials from around the same period. Their analysis yielded more surprises: out of 429 burials from across the Americas, they found 27 individuals associated with big-game hunting tools, and 11 of these were women. This data suggests that in these communities, both men and women were likely to be hunters.

These findings upend the prevailing narrative of prehistoric gender roles. The assumption that men were the hunters while women were the gatherers has shaped our understanding of prehistoric societies for generations. However, these new findings suggest a more equitable distribution of roles than previously thought.

Implications for our understanding of prehistoric societies

These findings have crucial implications for our understanding of social organization and labor division in ancient hunter-gatherer societies. They not only shift our perspective on gender roles but also reshape the way we interpret archaeological data. For instance, when we unearth hunting tools in future excavations, we should consider the possibility that they may have belonged to women.

In the face of new archaeological evidence, we are rethinking long-held assumptions about prehistoric societies. The discovery of women hunters suggests a more egalitarian division of labor than previously assumed. As we continue to unearth clues from our past, we gain a richer, more nuanced understanding of human history.

— WTF fun facts

Source: “Men hunt and women gather? Large analysis says the long-held idea is flat-out wrong” — Live Science

WTF Fun Fact 13446 – Danish AI Political Party

The Synthetic Party is a Danish AI political party led by an AI chatbot named Leader Lars.

How does an AI political party work?

Denmark’s political landscape is making an intriguing pivot towards artificial intelligence. Leader Lars was brought to life by artist collective Computer Lars and the non-profit art and tech organization MindFuture Foundation. Is this a new era in political representation?

The Synthetic Party, established in May 2022, aspires to represent the values of the 20% of Danes who do not vote. This AI chatbot is not just a figurehead. It’s equipped with policies drawn from Danish fringe parties since 1970. And its human members are committed to executing these AI-derived platforms.

Why involve an AI in politics?

The Synthetic Party seeks to represent data from all fringe parties striving for a parliamentary seat. It’s a novel concept that allows individual political visions, usually limited by financial and logistical constraints, to gain representation. The unique aspect of this political approach is the interaction between citizens and Leader Lars on Discord, a platform where people can speak directly to the AI. This feature fosters a unique form of democratic engagement.

The party’s AI-led political approach raises questions about the viability and accountability of machine learning in government. For instance, can an AI truly grasp and represent human needs and values? How do we hold an AI accountable for its decisions? The Synthetic Party’s response to these questions lies in the transparency and auditability of AI decision-making processes.

Party policy

The Synthetic Party’s policies are bold, to say the least. From establishing a universal basic income of 100,000 Danish kroner per month (equivalent to $13,700, and over double the Danish average salary) to creating a jointly-owned internet and IT sector within the government, the party seeks to innovate and challenge the status quo.

Crucially, the Synthetic Party is not about putting a chatbot in charge. Instead, it’s about exploring the democratic potential of AI and machine learning. The party sees AI as a tool to amplify and understand a wide range of opinions, even if those opinions sometimes contradict each other.

In addition to offering fresh political perspectives, the Synthetic Party aims to raise awareness about the role of AI in our lives and the importance of AI accountability. For example, it advocates for the addition of an 18th Sustainable Development Goal. This would focus on the relationship between humans and AI to the United Nations’ SDGs.

The Synthetic Party seeks to promote a more democratic, accountable, and transparent use of AI in politics. The party needs 20,000 signatures to run in the 2023 November general election. If it gets those, it could introduce a novel form of political representation in Denmark. It would be one that goes beyond a simple figurehead and instead uses AI as a tool for political change.

— WTF fun facts

Source: “This Danish Political Party Is Led by an AI” — VICE

WTF Fun Fact 13444 – Sense of Smell Strongest at Night

Our sense of smell is strongest at night. So if you feel like your pets seem extra smelly, or your bubble bath is a bit too fragrant in the evening hours, you’re not just imagining things. You’re picking up on scents that are somewhat dampened during the day.

Why is smell important?

Smell influences everything from taste perception to memory formation. However, what you may not know is that our ability to detect and discern scents fluctuates throughout the day, peaking during the late hours. This might seem trivial or even surprising, but it is a fascinating aspect of our biology. And it’s linked to our circadian rhythms.

The circadian rhythm is an internal process that regulates our sleep-wake cycle. It repeats roughly every 24 hours and impacts many physiological processes, including hormone release, body temperature, and various neural functions. Interestingly, this includes our olfactory sensitivity – our ability to perceive smells.

During the daytime, our brains process a multitude of sensory inputs. The sights, sounds, and tactile sensations we encounter are processed and analyzed, taking up significant neural resources. Consequently, our sensitivity to smells is somewhat overshadowed by this barrage of information.

Why is our sense of smell strongest at night?

However, the scenario changes at night. As the environmental stimuli decrease and our focus shifts inward, our sensitivity to smells becomes more pronounced. This shift is likely due to changes in body temperature and brain activity that occur during our sleep-wake transition.

The nocturnal enhancement of olfaction has implications beyond being a mere biological curiosity. For one, it directly influences our sleep quality. We are more susceptible to disturbances from unpleasant or potent odors at night. Therefore, the significance of maintaining a fresh and pleasant sleeping environment becomes clear for a good night’s sleep.

Moreover, this increased olfactory sensitivity might have roots in our evolutionary history. Our ancestors needed to be alert to dangers like predators or fires, especially during the night. A heightened sense of smell would have been advantageous in such scenarios, leading to better survival and reproductive success.

On a practical level, this knowledge can be advantageous to various industries, especially those involved in perfume and scent manufacturing. By understanding our olfactory system’s functioning, businesses can tailor their products for maximum impact during the evening hours.

— WTF fun facts

Source: “How Smell Affects Your Sleep” — The Sleep Foundation

WTF Fun Fact 13443 – Dead Fruit Flies

When fruit flies see or smell their dead comrades, their own lives are cut short. Talk about putting a damper on your day!

Fruit flies stress after seeing other dead fruit flies

If you’re a fruit fly, seeing one of your fallen is not just unsettling. It’s downright harmful to your health. Despite their diminutive size, experience stress and negative health effects when they witness the remains of their kin.

Neuroscientists have found that when fruit flies (Drosophila melanogaster) see their deceased fellow flies, specific brain cells are triggered.

And these aren’t just any brain cells. They are neurons that respond to visual stimuli, known as visual projection neurons (VPNs). These cells relay information from the flies’ eyes to their brains, helping them interpret and react to what they see.

What’s going on in a fruit fly’s brain?

But let’s add a pinch of intrigue to the mix. These neuroscientists didn’t stop at merely identifying the type of neurons involved. They zeroed in on the specific group of neurons that reacts to the sight of dead flies. The neurons in question are part of a cluster known as the “globus pallidus.” This is an area associated with movement and learning.

These scientists have discovered the precise neighborhood in the fruit fly’s brain where the “dead fly sighting stress response” takes place.

So, what happens when these neurons fire? In short, they trigger a series of stress responses that have a tangible impact on the fruit flies’ health and lifespan. As the sight of a dead fellow fly becomes ingrained in the fly’s brain, it alters the expression of stress-related genes, tipping the physiological balance and leading to a shorter lifespan.

This discovery has raised intriguing questions about the evolution of empathy and social responses in insects. While fruit flies may not experience empathy in the way humans do, their stress response to seeing dead comrades suggests a level of social awareness. This raises the question: why would such a response evolve? One possibility is that the sight of death serves as a warning signal, indicating the presence of potential threats or diseases, thus prompting the fly to modify its behavior.

However, this remarkable finding does more than just throw light on fruit flies’ stress responses. It could also contribute to our understanding of how human brains process stress and trauma. Humans, like fruit flies, have neurons that respond to visual stimuli. Therefore, these findings could lead to a better understanding of how our brains respond to stressful visual experiences, and potentially inform treatments for stress-related disorders.

— WTF fun facts

Source: “Seeing dead fruit flies is bad for the health of fruit flies – and neuroscientists have identified the exact brain cells responsible” — The Conversation

WTF Fun Fact 13442 – We Have More Bacterial Cells Than Human

The human body contains more bacterial cells than human cells. Weird, right?

The majority of the cells that constitute “you” are, in fact, not human. They are microscopic organisms that are hitching a ride, making a living off your body. It might sound like science fiction, but this is a confirmed scientific fact. The human body contains ten times more bacterial cells than human cells.

How can we contain more bacterial cells than human cells?

Now, before we allow our imagination to scare us into a frenzy, let’s unpack this a bit.

These bacterial cells, collectively known as the human microbiota, live mostly in harmony with our bodies. We provide them with a suitable habitat, and they return the favor by aiding in bodily functions like digestion and immune response. Our gut houses the vast majority of these organisms.

This raises some provocative questions: With our bodies being made up predominantly of non-human cells, what does that imply about our identity? What actually makes us human?

How are we fully human if we contain so many non-human cells?

Biologically speaking, being human is about more than just the number of cells. Human cells, while fewer in number, are much larger and more complex than bacterial cells. So, in terms of volume and genetic material, we are predominantly human.

But the philosophical implications are still fascinating to consider. We ten to link our human identity to our biological makeup. But the massive presence of non-human cells introduces an intriguing paradox.

Science has often categorized organisms based on their cellular composition. However, this fact might prompt us to reconsider such traditional boundaries. We need to acknowledge the complex symbiosis that constitutes our “self.” We are, in essence, a walking, talking microbiome.

Teamwork makes the dream work

These non-human inhabitants of our body have a far-reaching impact on our health and well-being. There’s a dynamic relationship between our human cells and these bacterial cells. When this relationship is in balance, we thrive. But when it’s out of whack, we may face health issues. This fact has driven researchers to explore the potential of microbiota in shaping future treatments for various diseases.

Yet, as we learn more about our microbial inhabitants, we also uncover deeper layers of what it means to be human. Are we individual entities, or are we, as some philosophers might argue, a “superorganism” made up of numerous symbiotic relationships?

Indeed, we might be more ‘alien’ than we ever imagined, yet this very fact underscores our extraordinary complexity as living beings.

So next time you glance at your reflection, remember: You’re not just looking at ‘you.’ You’re seeing an intricate ecosystem.

— WTF fun facts

Source: “NIH Human Microbiome Project defines normal bacterial makeup of the body” — National Institutes of Health