Science

WTF Fun Fact 13219 – DNA Sculptures

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An artist named Heather Dewey-Hagborg has created DNA sculptures using genetic material from random items discarded by strangers.

How are DNA sculptures created?

Dewey-Hagborg first collects discarded DNA samples. These come from cigarette butts or hair. She then uses the DNA left on the items to generate 3D-printed portraits. In theory, these sculptures should reflect the physical attributes of the person from whom the DNA was taken.

The process starts with extracting the DNA from the sample. She then amplifies specific regions of the genome that are associated with physical characteristics, like hair color or facial structure. The amplified DNA is then sequenced to determine the individual’s genetic information. This information is used to create 3D models of the person’s face. Those models are then 3D printed for her art installations.

The artist bases the final sculptures of the sculpture on genetic information. But it also relies on assumptions about how genes influence physical appearance. So, in some sense, they are speculative. You likely wouldn’t be able to track down a person based on a sculpture.

In an interview in Interalia Magazine (cited below), Dewey-Hagborg explained her process. “I walked around picking up people genetic material and analysing it, making portraits, to show the coming risks of genetic surveillance. That as our DNA is increasingly legible (fast, easy, cheap to sequence) we are facing new cultural consequences.”

As for her goal:

“My goal, if I have one, is to inspire audiences to critically engage with science and technology in their lives. To be aware of structures around them, of things present or soon coming, and to think and talk about them with others; to discuss what should or shouldn’t be.  I hope that my work invites viewers into a visceral encounter with the near future.”

Genetics and art

By using DNA as a medium, Dewey-Hagborg tries to raise questions about the role of genetics in shaping our identities. Her work also has implications for thinking about advances in biotechnology for privacy and individuality.

Dewey-Hagborg has displayed her work at the World Economic Forum. She has also sold work to the Centre Pompidou, the Victoria and Albert Museum, the Wellcome Collection, the Exploratorium. She has a Ph.D. in Electronic Arts from Rensselaer Polytechnic Institute. — WTF fun facts

Source: “A visceral encounter with the near future” — Interalia Magazine

WTF Fun Fact 13216 – There’s Enough Iron in the Body to Make a Nail

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The average human body contains enough iron to make a 3-inch nail.Well, a healthy body anyway. Some of us probably don’t get enough iron.

Is there really enough iron in the body to make a nail?

Humans require iron for many essential bodily functions. Iron is an essential mineral that helps transport oxygen throughout the body and is found in many foods such as red meat, poultry, fish, and beans. It is also found in food additives and dietary supplements, and is added to infant formula as well.

It’s important to note that iron deficiency is a common problem and can lead to anemia, fatigue, and impaired cognitive functioning. The World Health Organization recommends that people consume 10-20 milligrams of iron per day to maintain optimal health.

The average male body contains approximately 4.5 grams of iron, while the average female body contains approximately 3.5 grams. This means that the total amount of iron found in the human body is enough to make a 3-inch nail. Note: nails generally weigh between 2 to 3 grams.

Of course, no one is going to siphon the iron of your body and smelt it into a nail – hopefully.

What’s the significance of this concept?

Nails are often used as a metaphor for hard work. In that sense, it’s no surprise that the idea of making a 3-inch nail from the iron in the human body is a concept that fascinates people.

Iron can also be used to represent the ability to persevere and overcome difficult challenges. It conjures up images of fortitude and determination, courage, ad the will to succeed. Additionally, iron can also be used as a metaphor for protection. often a symbol of armor or a shield.

The metaphor of making a 3-inch nail from the iron stored in the body also speaks to our strength and resilience of the human body. It emphasizes the importance of how the iron in our bodies is used to help us do hard work.

—WTF fun facts

Source: “There Is Enough of This Metal in the Body To Make a Nail” — Soma Blog

WTF Fun Fact 13212 – The Cat Righting Reflex

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Have you ever wondered why cats always land on their feet? It’s because of something called the cat righting reflex.

What’s the cat righting reflex?

Normally, if you see a cat fall, you’re probably panicking and not trying to pay attention to the physics of the whole situation mid-air. But if you slow down footage of a cat falling (which we hope you don’t set them up for at home!), you’ll see that cats have the ability to reorient themselves in midair to ensure they land feet first.

The cat righting reflex is that innate ability, and it’s made possible by a specialized collar bone (or clavicle) This clavicle is highly flexible, allowing a cat to rotate its body 180 degrees while in the air.

So, when a cat falls, it first extends its legs. Then it rotates its head to face the ground. As it falls, it will then begin to rotate its spine, using its flexible collarbone to control the rotation.

Finally, as a cat reaches the ground, its hind legs will extend to absorb the impact.

And if you’ve seen a cat take a fall, you know its front legs are ready to push off and run away pretty much immediately.

Do cats *always* land on their feet?

While cats can survive falls from great heights, nothing works 100% of the time.

Not all cats can use their righting reflex with the same success. Some may not have the same flexibility or strength as others, especially if they are old or injured. And sometimes the cat righting reflex is not always “right.” They do get hurt…or worse.

Overall, the righting reflex has been an important survival mechanism for cats. It allows them to escape predators and avoid injuries when falling from things they’ve climbed.

Cats are also able to use their righting reflex to perform acrobatic feats, such as jumping through hoops, or climbing up and down vertical surfaces. That’s because their reflexes are typically really fast and precise, allowing them to make rapid adjustments to their body position.

Are cats the only animals with a righting reflex?

The righting reflex is not unique to cats. Other animals, such as squirrels and certain species of primates, also have this ability.

But cats are particularly known for this reflex because they have a very low center of gravity and a flexible spine. This allows them to maintain control of their bodies better than most creatures.

—WTF fun facts

Source: “Why Do Cats Land on Their Feet?” — Live Science

WTF Fun Fact 13211 – Grey Cat Genes

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Grey cat genes are an interesting thing. For example, did you know that most grey cats get their coloring from a “diluted” form of the black fur gene?

It’s kind of like the difference between a tortoiseshell cat and a “dilute tortie.”

Fascinating facts about grey cat genes

The melanocortin 1 receptor (MC1R) gene is responsible for black fur in cats. This gene controls the production of eumelanin in the hair shafts. In cats, there are two versions of this gene. So, an “active” version produces black or brown fur. A “diluted” version results in a grey or “blue” coat color.

The “diluted” version of the MC1R gene is caused by a specific genetic mutation. This mutation turns off the production of eumelanin in the hair shafts.

Grey cats can also have other colors in their fur, such as white, orange, or other shades of grey, and this depends on the specific genetic variations that are present. As you might have guessed, the color of a cat’s coat is determined by the interaction of multiple genes and environmental factors. The genetics of coat color can get pretty complex.

Cat fur color doesn’t tell us a lot

Grey cat fur can come in different shades and patterns. Some grey cats may have a light, silver-gray coat, while others may have a darker, charcoal-gray coat. Some grey cats may have a solid-colored coat, while others may have tabby markings or other patterns.

If you have a grey cat, you can’t necessarily tell what breed they are just by their fur color. But you can likely narrow it down if the cat is entirely grey.

The color and pattern of a cat’s coat can also be influenced by other genetic factors, such as the presence of white spotting or the agouti gene.

Grey domestic cats could be a mix of different breeds, which leads to variations in size, shape, and overall appearance. So, while grey cats share the common characteristic of having a grey coat due to the diluted form of the MC1R gene, each one still has other characteristics to be considered.

Feline parentage

Did you know a female cat is known as a molly (unless she is a purebred, then she is called a Dam). Female cats are called queens when they are pregnant or still feeding babies. Males are called “toms” or “tomcats” (and purebred fathers are Sires).

According to The Cat Fancier’s Association (cited below), there are some general rules about cat genetics.

For example, male kittens always obtain both color genes from their mothers. “The male offspring in a litter will always be either the color of the dam (or one of the colors in the case of parti-colors) or the dilute form of the dam’s color.”

On the other hand, “Female kittens take one color gene from each parent. The color of the female kittens in a litter will always be either a combination of the sire’s and dam’s colors, or the dilute form of those colors.”

We also didn’t realize that “Only the immediate parents determine the color/pattern of a kitten” or that “A kitten’s pattern can be inherited from either parent.”

There’s always something interesting to know about cats, even if it’s technical! —WTF fun facts

Source: “Basic Feline Genetics” — Cat Fancier’s Association

WTF Fun Fact 13208 – A Flamboyance of Flamingos

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A group of flamingos is called a flamboyance. It is also called a “colony” or a “stand,” but as you can imagine, flamboyance is far more popular.

How did it get named a flamboyance of flamingos?

The word “flamboyance” is derived from the French word “flamboyant,” which means “flaming” or “blazing.” It was originally used to describe the flamelike shapes found in the tracery of Gothic architecture, particularly in the late Middle Ages. The term was later used to describe a style of architecture characterized by elaborate and ornate decoration, as well as a flamelike appearance.

In the 19th century, the word began to be used to describe people and things that were showy, flashy, or ostentatious.

What makes flamingos so “fiery”?

Flamingos are social birds, and they tend to live in large groups (or colonies). Their bright pink or orange plumage is caused by pigments in the algae and crustaceans they eat.

The term “flamboyance” was first used to describe groups of flamingos in the 1930s, likely because of the birds’ striking coloration and the way they move in large, coordinated groups.

Their colonies can range in size from a few hundred to several thousand birds. Flamingos also establish a hierarchical social structure. Dominant birds are at the top and are typically larger and stronger. They get the best access to food and breeding sites.

Flamingos are also known for their synchronized behavior. They take off and land together and perform group displays such as head-flagging or wing-saluting during the breeding season. This synchronized behavior is thought to be used for communication and for predator detection.

While the term “flamboyance” has come to refer to any group of flamingos, it can also be used to describe any large, brightly colored group of birds or other animals that move and behave in a coordinated, showy manner. — WTF fun facts

Source: “What is a Group of Flamingos Called? (Complete Guide)” — Birdfact

WTF Fun Fact 13207 – The Headless Chicken Monster

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Have you heard of the headless chicken monster of the sea? Well, it’s slightly less exciting than it sounds, but we’re going to tell you about it anyway.

What is the headless chicken monster?

The headless chicken monster is actually a type of sea cucumber. And as you may have guessed, “headless chicken monster” isn’t its real name.

The sea cucumber was discovered in the Southern Ocean near East Antarctica in 2017 and made headlines in 2018. It is called the “headless chicken monster” because it has long, feathery appendages that resemble a chicken’s legs. Oh, and it doesn’t have a head. It uses appendages to move along the seafloor and filter feed on plankton. It has a mouth on the underside of its body.

The scientific name of this species is Enypniastes eximia.

Discovering a “monster”

The creature was seen using an underwater camera system. It’s thought to be the first sea cucumber of its kind to be observed in the Southern Ocean and has yet to be fully studied by scientists.

According to Smithsonian Magazine (cited below):

“While conducting a video survey of the deep, dark waters of the Southern Ocean, Australian researchers recently captured footage of a host of funky creatures that swim about near the sea floor. But the team was particularly surprised when a pink, blob-like animal fluttered into shot, propelled by a little pair of fins. It looked “a bit like a chicken just before you put it in the oven,” Dirk Welsford, the program leader for the Australian Antarctic Division, tells Livia Albeck-Ripka of the New York Times. The researchers had no idea what it was.”

Interestingly, scientists seem to have known about the creature since the 19th century, it’s just rarely sighted. It wasn’t named its own species until the recent footage.

The future of E. eximia

The Southern Ocean is a remote and inhospitable environment, and scientists know very little about the sea creatures that live in this region. The discovery of E. eximia is important because it highlights the diversity of life in the Southern Ocean and the need for further research in this region.

Due to its remote habitat and deep waters where it lives, wildlife officials don’t consider the species endangered. CNN reported that the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) proposed creating three large protected areas along East Antarctica to study the unique marine life there. However, Russia and China have blocked the proposal. — WTF fun facts

Source: “A Rare Sighting of the ‘Headless Chicken Monster‘ of the Sea” — Smithsonian Magazine

WTF Fun Fact 13206 – The Bombardier Beetle

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You may have heard of the Bombardier beetle since they have a rather interesting ability. Or as National Geographic (cited below) puts it, “the infamous ability to synthesize and release rapid bursts of stinky, burning-hot liquid from their rear ends.”

Tell me more about the bombardier beetle!

There are actually over 500 species of bombardier beetle (and about 40 in the US alone). These creatures live in many different types of ecosystems. The boiling hot chemicals they can shoot out of their rears as a defense mechanism can reach temperatures up to 212 degrees Fahrenheit. And the beetle can shoot the spray multiple times in quick succession. The spray can also produce a loud popping noise as it is released, adding an extra deterrent.

The details are even more fascinating.

In the bombardier beetle, special cells produce hydroquinones and hydrogen peroxide which then collect in a reservoir. In order to spray, the beetle has to open a valve controlled by a muscle in order to release the chemicals into a separate “reaction chamber.” This chamber is lined with cells that catalyze the chemical reaction that makes the compounds hazardous to the beetle’s predators.

The catalases and peroxidases lining the chamber also aid in the reaction that generates enough heat to bring the mixture to the boiling point (though some of it becomes vapor). The pressure created by the gases closes the valve and expels the chemicals at high speed. Amazing, right?!

Should I be afraid of this creature?

People don’t need to be afraid of the bombardier beetle. They’re too small to hurt humans (about the size of a fingernail), and they don’t go around indiscriminately spraying. They use that function only as a defense mechanism against predators.

Bombardier beetles usually keep to wooded areas and fields and don’t roam around places with lots of humans. They typically have dark abdomens and reddish legs, antennae, and heads, in case you want to keep an eye out.

How on Earth did this beetle feature evolve?

Funny you should ask. Some creationists like to use the bombardier beetle’s two-chamber system as an example of their theory of irreducible complexity. They insist that since the beetle’s defense mechanism wouldn’t operate without two complex parts, they could not have evolved via small modifications and are therefore a product of “intelligent design.”

Most of the creationist rhetoric masquerading as science gives an incomplete or sloppy description of the beetle’s inner workings.

In fact, a step-by-step evolution of the beetle is pretty straightforward (even if it does seem weird to us). The beetle likely developed its ability to secrete chemicals as a defense mechanism that was released via the epidermis to make it distasteful to predators. While the steps in between are all hypothetical since we didn’t see the creature evolve, the development of the beetle we know now is easily broken down into tiny evolutionary steps we’ve seen in other species.

You’ve got to wonder why a creationist would assume God created this beetle specifically to shoot chemicals out its rear end. — WTF fun facts

Source: “Bombardier beetles” — National Geographic

WTF Fun Fact 13205 – The Immortal Jellyfish

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The immortal jellyfish (Turritopsis dohrnii) is a specific species of jellyfish that has the ability to revert back to its youthful, immature state after it reaches maturity. It’s a very small species that reaches a diameter of about 0.18 inches. It’s found in the Mediterranean Sea and in the waters around Japan.

This creature gets its nickname from its ability to undergo a process called transdifferentiation. This allows it to revert back into a polyp and start its life cycle over again.

Wait, seriously? There’s a jellyfish that can reincarnate itself and live forever?

Ehhh, kind of. But jellyfish don’t live their lives by the same rules that we do. Their brains and community structures don’t operate in the same ways. It’s not like their memories live on forever (that we know of).

The process of transdifferentiation in this jellyfish acts kind of like a reset button.

Turritopsis dohrnii begins life as a fertilized egg that then hatches a larva (or planula). According to the American Museum of Natural History (cited below):

“A planula swims at first, then settles on the sea floor and grows into a cylindrical colony of polyps. These ultimately spawn free-swimming, genetically identical medusae—the animals we recognize as jellyfish—which grow to adulthood in a matter of weeks.”

Anyway, during the medusa stage, the jellyfish will reproduce sexually, releasing eggs and sperm into the water. There, they will fertilize and develop into the next stage, known as a polyp. Some jellyfish species will alternate between a medusa stage and a polyp stage in their life cycle, while others will only have a medusa stage.

Here’s the key: Once the medusa reaches maturity, it can reproduce and then die, but the immortal jellyfish is able to undergo transdifferentiation, reverting back to its polyp stage, and starting the life cycle again.

The AMNH explains:

“The cellular mechanism behind it—a rare process known as transdifferentiation—is of particular interest to scientists for its potential applications in medicine. By undergoing transdifferentiation, an adult cell, one that is specialized for a particular tissue, can become an entirely different type of specialized cell. It’s an efficient way of cell recycling and an important area of study in stem cell research that could help scientists replace cells that have been damaged by disease.”

Why isn’t this a bigger deal? Can we study jellyfish to become immortal?

Undoubtedly, some billionaire has a tank full of immortal jellyfish and a geneticist at hand to try to discover that particular secret of life. But it’s important to keep in mind – again – just how different a jellyfish’s life cycle is from our own. And there’s A LOT we don’t understand about underwater creatures, which may actually hold a lot of cool secrets about life, the universe, and everything.

So, it’s important to note that it is not completely understood how or why this process of transdifferentiation occurs. It’s only unclear if these jellyfish truly can live forever or not. (I mean, what is “forever” anyway, and how do humans even measure it?)

But it is a pretty cool trick.

The immortal jellyfish is also known to be a hardy species. It can survive in a wide range of conditions, allowing it to spread and colonize new areas. Of course, there’s a downside to being hearty and potentially immortal. It’s also known to be an invasive species in many parts of the world. That means it can cause serious damage to native ecosystems. In that sense, its potential immortality is a bit of a nuisance.

In any case, the immortal jellyfish is a fascinating creature that scientists are still trying to understand.

Now, you may have noticed another fun fact which is that a mature jellyfish is often referred to as a “medusa.” The medusa is the adult, sexually reproducing stage of a jellyfish’s life cycle. The name “medusa” is taken from Greek mythology, and the jellyfish’s trailing tentacles are thought to resemble the head of Medusa.— WTF fun facts

Source: The “Immortal” Jellyfish That Resets When Damaged — American Museum of Natural History

WTF Fun Fact 13202 – Almonds and Peaches Are Related

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Almonds and peaches are two great things that go great together. In fact, we feel hungry just thinking about it (with some vanilla ice cream, perhaps). Anyway, it turns out that they’re not just tasty together, but almonds and peaches are related.

How are almonds and peaches related?

Almonds belong to the family Rosaceae, and the genus Prunus, which also includes other stone fruits such as plums, apricots, cherries, and nectarines. Peaches also belong to the family Rosaceae and the genus Prunus, but they are in a different subgenus and species.

The Rosaceae family is a large and diverse group of plants that includes many economically important fruit trees and shrubs. The family is characterized by having flowers with five petals, sepals, and numerous stamens.

So, almonds and peaches are related in the sense that they are both in the same family (Rosaceae). To top it off, they also belong to the same genus (Prunus).

Genetic relatives

While they are both healthy and delicious, the similarities between the two foods seem to end there. They certainly don’t look alike and one is classified as bitter while the other is sweet.

But according to CRAG News (cited below), which comes from the Centre for Research in Agricultural Genomics:

“The comparison of the genome of the ‘Texas’ almond tree variety…and the peach tree genome places the divergence of both species six million years ago. The results are consistent with the existing hypothesis that places the existence of a common ancestor of these Prunus species in the center of Asia and the subsequent separation of two populations that was brought about when the Himalayas massif was lifted. This geological phenomenon would have left both populations of Prunus exposed to totally different climates in which both species would evolve: the almond tree in the arid steppe of the center and west of Asia and the peach tree in the subtropical climates of the East, in the area that is now South China.”

In other words, these trees are now much more distinct from one another because they adapted to different climates. The genes that changed places on their chromosomes are known as “transposons.” They move around in order to help organisms adapt better to their environments (among other things).

—WTF fun facts

Source: “The sequence of the almond tree and peach tree genomes makes it possible to understand the differences of the fruits and seeds of these closely related species” — CRAG News

WTF Fun Fact 13201 – The Power of Looking at Cute Animals

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Have you ever fallen down the rabbit hole (no pun intended) of looking at cute animals on the internet or social media? It’s hard to look away!

Well, it turns out, looking at them could be good for you.

There is evidence to suggest that your cute cat meme fixation can boost both focus and concentration. Studies have also found that looking at pictures of baby animals can improve attention and task performance.

The benefits of looking at cute animals

There is some evidence to suggest that looking at cute animals can boost both focus and concentration.

Researchers published a study in the International Journal of Environmental Research and Public Health. It found that looking at pictures of baby animals can improve attention and task performance. In fact, participants who viewed images of cute animals performed better on tasks requiring attention and fine motor skills. At least compared to those who viewed images of adult animals or inanimate objects.

Another study conducted by researchers at Hiroshima University in Japan found that looking at pictures of cute animals can increase activity in the brain’s prefrontal cortex, which is responsible for attention, problem-solving, and decision-making.

According to the Association for Psychological Science (cited below), “Led by researcher Hiroshi Nittono, the team conducted three experiments with 132 university students and concluded that cute images may facilitate improved performance on detail-oriented tasks that require concentration.”

We’ve long known that humans are attracted to looking at things that look juvenile. “Baby schema” includes things like a large head and protruding, large eyes – and they just seem “cuter” to us. Baby humans and baby animals often have these characteristics.

But now there’s proof that cute things might make our brains operate a bit better. Nittono and colleagues wrote in their paper:

“This study shows that viewing cute things improves subsequent performance in tasks that require behavioral carefulness, possibly by narrowing the breadth of attentional focus.”

Puppy power

Additionally, looking at cute animals can also release oxytocin, a hormone that is associated with feelings of love and bonding, which can lead to increased feelings of positive emotion and well-being.

It’s worth noting that these studies are still in the early stages, and more research is needed to understand the full extent of the effects of looking at cute animals on focus and concentration.

Of course, looking at cute animals is great and all, but is not a replacement for getting professional help if you have serious attention and focus issues.

—WTF fun facts

Source: “The Power of Puppies: Looking at Cute Images Can Improve Focus” — Association for Psychological Science

WTF Fun Fact 13194 – Goosebumps Muscle

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Did you know you have a goosebumps muscle? We get goosebumps when tiny muscles in our skin’s hair follicles called arrector pili pull our hair upright. Goosebumps evolved when humans had enough body hair for this “hair-raising” action to keep them warm. We still get goosebumps, but they no longer serve a purpose in humans.

How do the goosebumps muscles work?

The arrector pili muscle is a small muscle located at the base of each hair follicle. When this muscle contracts, it causes the hair follicle to stand upright, resulting in the characteristic “goosebumps” or “gooseflesh” that many people experience in response to cold temperatures, emotional arousal, or certain stimuli.

The contraction of the arrector pili muscle can also cause the hair follicle to become more sensitive to the surrounding environment, which may help to protect the skin from cold temperatures or other environmental factors. This contraction is also mediated by the sympathetic nervous system, which is activated in response to certain stimuli such as cold, fear, anger, or pleasure.

Why do we get goosebumps?

Goosebumps occur as a response to a variety of stimuli. The most common trigger is a change in temperature, such as feeling cold. Goosebumps also occur in response to emotional stimuli such as fear, awe, or pleasure. This is because the contraction of the arrector pili muscle is mediated by the sympathetic nervous system. That is activated in response to these stimuli.

Another reason why we get goosebumps is an evolutionary one. When our ancestors had more hair on their bodies, the contraction of arrector pili muscles would make the hair stand up. This created a thicker layer of insulation to help them stay warm in cold temperatures. This response is still present in humans, even though most of us have less body hair.

Goosebumps can also occur when listening to music. This is because the emotional response to music can activate the sympathetic nervous system, which triggers the contraction of the arrector pili muscle.

Overall, goosebumps are a physiological response to a variety of stimuli that can be triggered by both environmental and emotional factors. —WTF fun facts

Source: “What Goosebumps Are For” — National Institutes of Health

WTF Fun Fact 13188 – Geckos Turn Off Sticky Feet

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People have long wondered how geckos manage to stick to the sides of structures without falling off. The short answer is that they have sticky feet. But did you know geckos turn off sticky feet when they need to run faster?

How do geckos turn off sticky feet?

Geckos use toe hairs to turn the stickiness of their feet on and off. Oregon State University (OSU) discovered the details of this mechanism in 2014. They published their results in an article that appears in the Journal of Applied Physics.

The researchers noted that the geckos’ “adhesion system mechanism” has long been a curiosity. According to Science Daily (cited below):

“‘Since the time of the ancient Greeks, people have wondered how geckos are able to stick to walls — even Archimedes is known to have pondered this problem,’ said Alex Greaney, co-author and an assistant professor of engineering at OSU. ‘It was only very recently, in 2000, that Kellar Autumn and colleagues proved unequivocally that geckos stick using van der Waals forces.'”

Geckos have a system of hairs called “seta” on their toes. The seta can bend when they come into contact with rough surfaces in order to provide points of contact that keep the sticky surface of the gecko’s toe pads from adhering. Those hairs provide millions of points of contact to allow the creatures to maneuver over terrain without sticking.

Other insects and spiders also have this adhesion system. That’s why they can stick sideways to walls, seeming to defy gravity.

The stickiness system

Greany told Science Direct: “Understanding the subtleties of the process for switching stickiness on and off is groundbreaking. By using mathematical modeling, we’ve found a simple, but ingenious, mechanism allows the gecko to switch back and forth between being sticky or not. Geckos’ feet are by default nonsticky, and this stickiness is activated through application of a small shear force. Gecko adhesion can be thought of as the opposite of friction.”

The stickiness of geckos’ feet has long fascinated scientists seeking to produce material for use in adhesives. The ability of geckos to turn off sticky feet is yet another piece of the materials science puzzle that may come in handy someday in fields like construction and robotics. — WTF fun facts

Source: “Geckos use toe hairs to turn stickiness on and off” — ScienceDaily

WTF Fun Fact 13186 – Medical Term for Ice Cream Headache

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Eating ice cream too fast can hurt! In fact, so many people have experienced the phenomenon of these headaches (also called “brain freeze”) that there’s an official name for them. The medical term for ice cream headache is sphenopalatine ganglioneuralgia.

Why is there a medical term for ice cream headache?

The world loves ice cream. And sometimes we eat it too fast either because 1) it’s so delicious, or 2) we need to eat it before it melts. But we pay the price.

But what we sometimes call an ice cream headache is also referred to as “brain freeze” and can happen without the delicious ice cream.

According to the Cleveland Clinic (cited below), “Brain freeze is a brief but intense pain in the front part of your head. It occurs when you eat, drink or breathe something extremely cold…” So it can include breathing in freezing air as well as eating slushies, ice cubes, popsicles, etc.

While we have lots of colloquial names for the pain, the scientific/medical term for ice cream headache is sphenopalatine ganglioneuralgia.

Who is at risk for getting ice cream headaches?

Anyone can get a brain freeze. Children may be more likely to get brain freeze because they may not have learned to slow down when eating something fun like an ice pop.

Some research has shown that sphenopalatine ganglioneuralgia is more common in people who get migraine headaches.

What is sphenopalatine ganglioneuralgia?

An ice cream headache comes on quickly, but it also goes away relatively fast. It’s often gone in a few minutes, tops, and doesn’t need to be treated with medicine.

Brain freeze doesn’t cause other symptoms either – no nausea or sensitivity to light, for example. It’s just temporary pain that occurs “When your body senses sudden, extreme cold in the mouth or throat” and “tries to react and warm up.”

The headache sets in as “Blood vessels throughout the head expand to let extra blood into the area for warmth. That quick change in blood vessel size causes sudden pain.”

Of course, you can prevent the pain caused by doing that thing by avoiding that thing. But who wants to avoid ice cream and other cold treats? Instead, try warming up your mouth and throat by drinking room-temperature water or pressing your tongue against the roof of your mouth. Or just slow down on the ice cream. — WTF fun facts

Source: “Brain Freeze” — Cleveland Clinic

WTF Fun Fact 13183 – The Gruen Transfer

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We’ve all fallen victim to the Gruen Transfer. In fact, stores, casinos, and malls are built around this theory in order to make us fall victim to it. The payoff is more spending on our part.

What is the Gruen Transfer?

Have you ever gone to a store and just started wandering around? Plenty of us can run in and out for what we need, but it’s hard to not start wandering occasionally, just to see if there’s anything else we might need or want. And that’s the whole point.

Marketers and designers specifically build floor plans and displays that disorient us and lure us in. It’s all designed to give us a general desire to keep shopping and looking at things. If you just go to Target for fun, you’re WAY deep into the Gruen Transfer.

According to Gizmodo (cited below): “The Gruen transfer is the idea that the shopping experience itself was worth doing, and that paying money for something not on any specific agendawasthe agenda.”

Of course, it’s all about getting you to consume more things.

Who was Victor Gruen?

The Gruen Transfer “mind trick” is named after architect Victor Gruen. But he’s probably rolling over in his grave since he hated the idea of disorienting consumers. His goal was to put items people needed in the same general location for convenience.

What his goal WASN’T was to confuse people and make them feel disoriented. In fact, Gizmodo’s article on the Gruen Effect (cited below) brings this to the fore, noting that “Gruen wasn’t a fan of the transfer at all. He railed against confusing, maddening stores that baffled consumers. In fact, his whole idea of a mall was based on efficiency on a very wide scale.”

“And, because there were only so many ways to design efficiently, many stores would be standardized. But Gruen wanted something more. Shopping places, he thought, should feature gardens, benches, cafes, and courtyards. It should be an experience. Then things like malls wouldn’t just be commercial zones, but would serve as public gathering places, where everyone, from every level of society, could mingle. He wanted to entice people, and get people to interact with each other, not confuse them.”

Making the transfer

Nevertheess, his name became associated with what the marketers and other designers did with his ideas. It became applicable within a store as well – such as a grocery store. Confusion reigns so you can see more things you might want to buy. The same is true of casinos. It’s easy for people to become disoriented, spend more time there, and part with more money.

Gruen just wanted public space for all. Now those places are ones where you can’t go to socialize anymore. You can only be there if you plan to shop.

As Gizmodo notes: “And so the guy who wanted to provide a public space, where everyone could get their shopping done so they could socialize, ended up inventing a system in which socialization equals shopping.” — WTF fun facts

Source: “The cruel irony of the Gruen Transfer” — Gizmodo

WTF Fun Fact 13177 – Nostrils Take Turns

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Did you know your nostrils take turns breathing in air? Well, at least they take turns breathing in the most air, meaning one always takes in a bit more than the other. This also helps explain why nostrils tend to trade off on getting stuffy as well.

How we breathe

According to Dr. Michael Benninger, a head-and-neck doctor at the Cleveland Clinic via Live Science (cited below), “At any given time, people do about 75% of their breathing from one nostril and 25% from the other, said The dominant nostril switches throughout the day. This is called the nasal cycle.”

We even have preferred nostrils. Some of us tend to take in more air through the right and others through the left (this corresponds to your dominant hand). But for the most part, our nostrils trade off about 2 hours.

Why do nostrils take turns?

We typically don’t notice one nostril being stronger than the other during the day. We also don’t really notice the trade-off unless we’re stuffy. But, in general, the nasal cycle continues throughout the day, even at our healthier, with one nostril becoming slightly more congested (and therefore taking in less air) than the other.

Why does this occur? No one knows for sure. However, Benninger told Live Science there’s one popular theory: “Some people have speculated that it has to do with allowing moisture to build up on one side so that it doesn’t get too dry.”

You may notice your nasal cycle more when you sleep, especially if you’re a side sleeper. When sleeping on your side, gravity will cause the lower nostril to become less congested. But this plays into the nasal cycle as well. If it’s your right nostril’s “turn” to be less congested, laying on your right side will simply even things out. But if you lay on the side of your more congested nostril, you may experience extra congestion.

Things aren’t quite the same when you have a cold that stuffs up both nostrils. In that case, your nasal cycle will have little influence over congestion. — WTF fun facts

Source: “Why don’t we breathe equally out of both nostrils?” — Live Science

WTF Fun Facts 13172 – Drinking Water and Aging

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We’ve been given a lot of contradictory advice about drinking water over the decades. Drink eight glasses of water. Don’t drink eight glasses of water. Drink only when you’re thirsty. Drink as much water as possible. However, too much water can kill you. Well, according to a new study from the National Institutes of Health, it turns out drinking water and aging are related.

The “anti-aging” benefits of drinking water

There’s nothing wrong with aging, of course. We should all be so lucky to be able to do it. But in this case, we’re referring to the diseases and bodily degeneration that accompany age. According to CBS News, the study shows that drinking enough water is “associated with a significantly lower risk of developing chronic diseases, dying early, or being biologically older than your chronological age…”

Study author Natalia Dmitrieva from the Laboratory of Cardiovascular Regenerative Medicine at the National Heart, Lung, and Blood Institute said in a news release.”The results suggest proper hydration may slow down aging and prolong a disease-free life.”

You might be skeptical about that. But when you look at all of the studies on (clean) water consumption, it’s pretty obvious that it can help deliver some health benefits under the right circumstances.

How was the study performed?

Dmitrieva and her lab gathered an impressive amount of data from 11,255 adults over a 30-year period. They compared the subjects’ serum sodium levels (something that reliably goes up when a person doesn’t drink adequate water to meet their body’s needs) to 15 health indicators. These included things like blood pressure, respiratory and immune functioning, blood sugar, cholesterol, etc.

And you can imagine what they found. Adults with high serum sodium levels were more likely to develop chronic diseases. They were also more likely to die younger than those with low serum sodium levels (and therefore, higher water intake).

This helps strengthen the results of a 2022 study that linked poor water intake to heart disease.

How does water affect aging?

Data was gathered from the subjects during five medical visits, two when they were in their 50s and 60s and the last between the age of 70 and 90. They also used relatively healthy subjects who did not already have chronic high serum sodium levels or other factors that could affect results, like obesity. They also adjusted for things like race, sex, and smoking status, since those can affect someone’s overall lifespan.

According to the NIH, they found:

“They found that adults with higher levels of normal serum sodium – with normal ranges falling between 135-146 milliequivalents per liter (mEq/L) – were more likely to show signs of faster biological aging. This was based on indicators like metabolic and cardiovascular health, lung function, and inflammation...Adults with serum sodium levels between 138-140 mEq/L had the lowest risk of developing chronic disease.”

Correlation and causation

Water intake, health, and aging are correlated in these studies. There appears to be a relationship between them. But you know what they say – correlation does not equal causation. That means there can be other factors involved, and that water intake does not immediately affect any of these disease or aging outcomes.

Of course, maybe water intake is the key. But that’s not something the study can prove. For that, we’ll need a lot more evidence and research into how our bodies develop or stave off specific diseases.

But in the meantime, this information can help guide our choices. Since more than half of adults in the U.S. don’t drink enough water, maybe it’s time to incorporate more into your day. — WTF fun facts

Source: “Drinking lots of water can help reduce the effects of aging” — CBS News

WTF Fun Fact 13165 – The Power of Trees

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Behold the power of trees! In 2015, a study found that having more than 10 trees on their block made people feel as healthy as if they were seven years younger or made an additional $10,000 a year.

The healing power of trees

According to the Washington Post (cited below): “After analyzing two sets of data from Toronto, researchers report that adding just 10 trees to a single city block could improve how healthy a person feels as much as if that person made an additional $10,000 a year or were seven years younger.”

The study also found that people who lived in neighborhoods with more trees were less likely to have hypertension, be obese, or have diabetes. This was true across all demographic and socioeconomic groups, so even trees in a less affluent neighborhood seemed to work their magic on residents.

Of course, this doesn’t mean there’s a causal link between trees and health. This could just be a correlation. But trees not only affected people’s objective health measures but their perceptions of their well-being as well. We feel better around trees.

Perhaps this is why the Japanese art of “forest bathing” is being explored in relation to cancer treatment.

The study looked at 30,000 people in Toronto, which has universal healthcare. That’s important because access to healthcare is not as reliant on one’s socioeconomic status, so it controls for that factor.

Why are trees good for us?

While the correlation found in the study was strong, the researchers still don’t know why trees make us healthier. One possibility is their ability to remove pollutants from the air.

And the more we learn about the effects of air pollution on our overall health, the more sense that makes. However, there are other studies that show even a short time spent among trees can have beneficial effects on our health. — WTF fun facts

Source: “10 more trees on your street could make you feel 7 years younger, study shows” — Washington Post

WTF Fun Fact 13161 – Bats Give Birth Upside Down

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Female bats give birth upside down and catch the baby in their wings.

Interesting facts about bats

We know bats sleep upside down, but we weren’t aware they did much else that way. And you can chalk that up to our clear lack of knowledge about anything bat-related. But thanks to Montana’s Public Radio station (cited below) and their show “Field Notes,” which is produced by the Montana Natural History Center, we now know a lot more!

For example, did you know bats only breed when it’s rainy? Or share the responsibility for nursing baby bats among colony members? Or that the “colony” is actually called a “harem”?!

It turns out that female bats are only fertile during the wet seasons. That’s January or February in the Southern Hemisphere, or March or April in the Northern Hemisphere.

They divide themselves up into harems, territorial groups with one central male bat. However, that bat doesn’t father all the bat babies. Female bats in the harem may mate with other male “harem leaders.” Interestingly, the bat experts note that “it’s very unlikely that they will mate with a non-harem male.” So any lone bats out there are out of luck.

Apparently, the smaller the bat is, the more likely he is to be successful in reproducing. That’s because the males don’t simply go around and mate with harem members at will – they have to work for it. Males have to attract females with a display of flying and hovering prowess. Big bats can’t hover as well.

According to Field Notes, “Smaller males are more successful fathers because they can maneuver more nimbly in the air. Not only can they hover well and display themselves to females, they can maneuver well during actual mating, which happens – you guessed it – upside down.”

How do bats give birth upside down?

Ok, so that’s already more upside-down time than we had imagined.

But what about birth?

Females have only one baby per pregnancy, and those babies gestate for three months. When they are ready to give birth, the mother bat hangs upside down by her feet (occasionally grasping a ceiling or branch with her hands as well). This might sound like a lot of work, but when a bat’s feet grasp something, they are actually at rest (unlike ours). So it would take more energy to be in any other position.

Eventually, the baby bat emerges feet-first and they can even grasp their mother’s fur to pull themselves out. That’s helpful!

The mother then uses her wings to ensure the baby doesn’t fall from whatever she’s hanging from.

Not only do mothers nurse babies upside down, but they even take them on hunting trips when they’re not in baby bat daycare (or small groups of young called “creches”).

The mother bats nurse their young until two weeks before they’re weaned. At this point, they may let other mother bats nurse their babies.

And a final interesting fact – female bats are favored by mothers and more likely to survive. — WTF fun facts

Source: “Bat Moms Do A Lot Of Hanging About” — Montana Public Radio