Science

WTF Fun Fact 13374 – The Basal Meristem

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Have you ever wondered why most grass is able to stand straight up without flopping over until it’s very long? It’s because of something called the basal meristem.

Anatomy of grass – the basal meristem

Gras is much more than a simple ground cover. This seemingly humble plant boasts a remarkable adaptation that allows it to thrive even in the face of grazing and cutting. The basal meristem is grass’s unique way of growing from the base.

The basal meristem, located at the base of the grass plant, is a specialized tissue responsible for its continuous growth and regenerative capabilities. Many other plants rely on apical meristems at the tips of their shoots. But grasses have evolved to grow from the base, giving them an edge in challenging environments.

The benefits of a basal meristem

This adaptation is particularly beneficial in the context of grazing and cutting. When herbivores nibble on the aboveground parts of the grass, they remove the exposed leaves and stems. However, the basal meristem remains intact, allowing the plant to bounce back quickly. It is from this resilient meristem that new shoots emerge, ensuring the ongoing growth and survival of the grass.

The ability to regrow from the base makes grass an ideal choice for grazing pastures, where animals feed on the vegetation. The constant nibbling from herbivores triggers the basal meristem to produce new shoots, providing a continuous food source for livestock and wildlife.

Reasons to mow your lawn

Grass’s remarkable regenerative abilities are not limited to grazing situations. Lawn maintenance, such as mowing, also benefits from the basal meristem’s unique growth pattern. When a lawnmower cuts the visible blades of grass, the basal meristem remains untouched, ready to initiate the regrowth process. This allows lawns to maintain their vibrant appearance, quickly recovering from the trimming.

The frequency and height at which the lawn is mowed can indirectly affect the health and growth of grass. Regular mowing at the appropriate height promotes a healthier lawn by removing the top portion of the grass blades and stimulating lateral growth. This encourages the development of a denser and more resilient turf. Mowing also prevents the grass from becoming too tall and promotes the allocation of resources to the basal meristem, where new shoots originate.

However, it’s important to note that cutting the grass too short, known as scalping, can have negative effects on the basal meristem and overall grass health. Scalping can damage the meristem and hinder regrowth, leading to a weakened lawn.

Restoring grasslands

The basal meristem’s resilience also plays a crucial role in the restoration and management of grasslands. Whether it’s rehabilitating degraded landscapes or controlling invasive species, understanding the basal meristem’s mechanisms is essential. By cutting the aboveground parts of unwanted plants, resource managers can harness the regenerative power of the basal meristem to encourage the growth of desired grass species and promote ecosystem health.

In addition to its regrowth capabilities, the basal meristem contributes to the overall hardiness of grasses. This adaptation enables grass to endure and recover from environmental stresses such as drought, fire, and physical disturbances. The continuous growth from the base allows grasses to maintain their vigor, even when exposed to challenging conditions. This resilience makes them essential players in stabilizing soil, preventing erosion, and providing valuable habitat for numerous plant and animal species.

—WTF fun facts

Source: “Grass Biology” — Grasses of Palm Beach and Martin Counties

WTF Fun Fact 13373 – Moon Garden

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Sometimes it takes shedding a little moonlight on your garden to give it a magical quality. To fully appreciate the ethereal allure of the night, garden enthusiasts have embraced the concept of the moon garden.

These specially designed spaces are adorned with a selection of plants that come alive in the moon’s gentle glow, offering a captivating sensory experience after dusk.

Why build a moon garden?

The idea behind moon gardens is to create a place outdoors that naturally shines under the soft light of the moon. Sure, sunlight showcases vibrant colors, but moonlight can reveal delicate hues, silhouettes, and textures that go unnoticed during the day.

Moon gardens capitalize on subtleties, creating a serene and contemplative atmosphere for those seeking a different kind of garden experience.

When planning a moon garden, it’s essential to consider plants that thrive in low light conditions and reflect the moon’s glow. White or pale-colored flowers, for instance, take center stage in these nocturnal spaces.

What to plant in your nighttime landscaping

There are plenty of plants to choose from for a night garden. Blossoms such as white roses, moonflowers, evening primroses, and jasmine emit a sweet fragrance to enhance your sensory journey.

The foliage in moon gardens is equally important, as it provides contrasting textures and shapes. Plants with silver or gray leaves, like lamb’s ear or dusty miller, stand out under the moonlight. Other options include plants with variegated foliage, which adds visual interest even when the moon is hidden behind clouds.

To enhance the atmosphere, moon garden enthusiasts often incorporate plants with night-blooming flowers. One such example is the night-blooming cereus, a cactus species that displays stunning white flowers only after the sun sets. Another favorite is the angel’s trumpet, a fragrant flower that releases a sweet scent in the evening hours.

Adding more senses

Besides the visual and olfactory delights, moon gardens also embrace the symphony of sounds that come alive at night. The gentle chirping of crickets, the occasional hoot of an owl, or the rustling of leaves can all contribute to the ambiance. So, including elements like a small water feature or wind chimes can amplify the auditory experience, creating a soothing and meditative environment.

Moon gardens are not limited to plants alone. The hardscape elements play a crucial role in enhancing the overall atmosphere. A white or pale-colored pathway, for instance, provides a radiant contrast against the dark soil, guiding visitors through the garden. Stone or marble sculptures, strategically placed under moonlight, evoke a sense of mystery and invite contemplation. Another popular feature is the inclusion of reflective surfaces, such as mirrors or metallic accents.

These elements capture and amplify the moonlight, adding a touch of shimmer to the garden. Illumination through softly lit lanterns, solar-powered lights, or strategically positioned candles can enhance the dreamlike quality of the moon garden.

—WTF fun facts

Source: “Night Blooming Plants for Moon Gardens: White Flowers That Shine in the Moonlight” — The Spruce

WTF Fun Fact 13372 – Plant Sounds

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Nature holds a hidden symphony of plant sounds. While we typically associate sound with animal communication, recent scientific research has revealed that plants also possess the ability to produce acoustic signals.

Plants have found their own unique way of vocalizing their discontent, even without possessing mouths. Recent research has revealed that stressed plants emit audible sounds that correspond to the type of adversity they are experiencing. These sounds, resulting from cavitation, occur when tiny bubbles burst and produce mini-shock waves within the plant’s vascular system. The plants make different complaints that match their specific stresses, such as dehydration or physical damage. While humans cannot hear these high-pitched sounds, they fall within the hearing range of other animals, raising questions about potential plant-to-plant communication. This discovery highlights the surprising sophistication of plants and opens up avenues for further exploration in plant bioacoustics.

The field of bioacoustics

The field of plant bioacoustics investigates the sounds produced by various plant species and their ecological significance. By studying plant sounds, scientists aim to unravel the ecological functions, adaptations, and potential communication mechanisms of these silent but expressive organisms.

Plants produce sounds through a variety of mechanisms. For instance, when certain plants experience mechanical disturbances such as wind or touch, their leaves or stems can generate rustling or creaking sounds from within. The release of gases during certain plant processes, such as photosynthesis, can produce ultrasonic vibrations.

Plant sounds as communication

Plants may use sound as a means of communication and signaling. Research has shown that some plant species emit ultrasonic clicks or vibrations in response to environmental cues. One example is the presence of insect pollinators or approaching herbivores. These acoustic signals may attract or repel certain organisms, aiding in pollination, seed dispersal, or defense strategies. During water stress or drought, some plants emit high-frequency sounds that can potentially attract predators of herbivorous insects, helping to protect the plant from excessive damage.

Studying plant acoustics

The study of plant sounds also has practical applications. Monitoring and analyzing acoustic emissions from plants can provide valuable insights into their health, growth, and stress levels. By detecting subtle changes in plant sounds, scientists and farmers can identify potential issues, assess the impact of environmental factors, and optimize cultivation practices.

The notion that plants produce sounds challenges our traditional understanding of the acoustic landscape. From the rustling of leaves to the ultrasonic vibrations emitted during crucial plant processes, the sounds of plants carry hidden messages and ecological significance

—WTF fun facts

Source: “This Is What It Sounds Like When Plants Cry” — New York Times

WTF Fun Fact 13370 – The Origin of Cheetos

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When you think of Cheetos, the first thing that comes to mind is probably the cheesy, crunchy snack that leaves your fingers orange. However, what many people don’t realize is that the origin of Cheetos is tied to the military.

The origin of Cheetos

Cheetos were invented by an unexpected source—military food scientists at the United States Department of Agriculture (USDA). In the early 1940s, during World War II, scientists were tasked with finding a way to utilize surplus cornmeal. These products also needed to be shelf-stable, lightweight, and provide nutrition to soldiers on the frontlines.

The driving force behind the creation of Cheetos was food scientist Colonel Bob, a.k.a. Colonel Edward Blewett. His objective was to find a cheese that could be transformed into a powder, providing a burst of flavor when added to various food products.

In the early 1940s, Colonel Bob and his team succeeded in developing a breakthrough process that transformed cheese into a powdered form. This cheese powder became the key ingredient for what would eventually become Cheetos. However, it wasn’t until the 1950s that the cheese powder was combined with cornmeal and shaped into the signature Cheetos form we know today.

From rations to snacks

In 1961, Fritos, the well-known corn chip brand, acquired the rights to Cheetos. Frito-Lay, the company behind Fritos, recognized the immense potential of Cheetos as a snack food. They further refined the recipe, improved the manufacturing process, and launched Cheetos into the snack food spotlight.

Cheetos quickly became a sensation. Cheetos’ popularity soared with the introduction of different flavors. For example, Flamin’ Hot Cheetos became a cultural phenomenon in their own right.

The military’s pursuit of portable, and long-lasting food options for soldiers led to the creation of Cheetos. So next time you enjoy a bag of Cheetos, take a moment to appreciate the military origins behind the snack.

—WTF fun facts

Source: “How the US Military Helped Invent Cheetos” — Wired

WTF Fun Fact 13369 – Bombing the Moon

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During the height of the Cold War in the 1950s, when tensions between the United States and the Soviet Union were at their peak, a truly audacious plan was proposed: bombing on the moon. This controversial proposal was known as “Project A119.” It was a testament to the extreme lengths humanity was willing to go to demonstrate power and assert dominance during this era.

The origins of Project A119

Project A119 was a top-secret plan devised by a group of American scientists. They were led by physicist Leonard Reiffel, who worked under the direction of the United States Air Force. The primary motivation behind the project was to showcase American technological prowess and military superiority to the world, particularly the Soviet Union.

The plan involved launching a nuclear bomb toward the moon, targeting its unexplored far side. The idea was to create a massive explosion visible from Earth, serving as a display of military might. The bomb would have been equivalent in power to the atomic bombs dropped on Hiroshima and Nagasaki during World War II.

Why bombing the moon didn’t work out

Despite the audacity of the plan, scientists involved in Project A119 recognized the potential scientific value of the lunar explosion. They believed that the blast could reveal valuable information about the composition of the moon’s surface and the nature of lunar craters.

Although Project A119 was seriously considered, it never came to fruition. Concerns over the potential risks associated with the mission played a significant role in the project’s abandonment. No one knew what the consequences of bombing the moon might be.

The proposal to detonate a nuclear bomb on the moon speaks to the extreme mindset prevailing during the Cold War. It reflects the fervent desire of both the United States and the Soviet Union to showcase their technological advancements.

The plan’s abandonment highlights the importance of responsible decision-making. It’s also a testament to considering the potential environmental impacts and long-term consequences that such actions could have on Earth.

—WTF fun facts

Source: “The crazy plan to explode a nuclear bomb on the Moon” — BBC

WTF Fun Fact 13364 – Honey Never Spoils

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Did you know that – so long as it’s stored correctly and not contaminated – honey never spoils? As long as it’s pure honey and it’s preserved appropriately, it can resist spoiling for thousands of years (if not indefinitely). Its remarkable longevity is evidenced by pots found in ancient Egyptian tombs.

The history of honey

Honey has been cherished since ancient times, with evidence of its consumption dating back thousands of years. The Egyptians, renowned for their mastery of preservation, held honey in high regard and utilized various techniques to ensure its longevity.

Honey’s low moisture content, acidic pH, and the presence of hydrogen peroxide-producing enzymes contribute to its natural preservation properties.

The world’s oldest honey

Archaeologists venturing into the depths of ancient Egyptian tombs in 1922 made a remarkable discovery. In King Tut’s tomb, they found a treasure trove of pots filled with honey over 3,000 years old.

These pots, carefully sealed and preserved within the protective embrace of the tombs, have defied the passage of time, remaining perfectly edible to this day. This is how we know that it’s possible that honey never spoils.

Is it true that honey never spoils?

Honey’s exceptional longevity can be attributed to several factors. Firstly, its low moisture content inhibits the growth of bacteria and other microorganisms, as most harmful pathogens require higher water content to thrive. Secondly, honey’s acidic pH, typically ranging from 3.2 to 4.5, creates an unfavorable environment for many bacteria. Lastly, bees add an enzyme called glucose oxidase to honey, which produces hydrogen peroxide—a natural antimicrobial agent.

While honey possesses incredible preservation properties, it is important to note that improper storage can impact its quality. Exposure to air, moisture, and heat can lead to crystallization, fermentation, and the growth of yeasts or molds. To maintain the freshness of honey, it is crucial to store it in a tightly sealed container at room temperature, away from direct sunlight and excessive heat.

When honey spoils

Just because honey can last “forever,” doesn’t mean it will. Honey’s shelf life can vary depending on its moisture content, acidity, and storage conditions. Raw, unprocessed honey tends to have a longer shelf life compared to processed honey, as it retains more of its natural enzymes and antimicrobial properties. Furthermore, honey with higher acidity levels generally exhibits better preservation qualities.

Honey’s longevity also relies on its quality and source. Pure, unadulterated honey with minimal processing has a higher likelihood of maintaining its freshness over time. Additionally, honey sourced from reliable beekeepers and reputable producers ensures its authenticity and minimizes the risk of spoilage due to contamination or improper handling.

—WTF fun facts

Source: Discover the Oldest Honey Ever Found (From King Tut’s Tomb?) — AZ Animals

WTF Fun Fact 13355 – Importance of Your Stomach Lining

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The mucus in your stomach lining is the unsung hero of your digestive system.

Have you ever wondered why the stomach can digest the things you consume but stops short of digesting itself?

The role of your stomach lining

Mucus may not be something you think about often, but it plays a vital role in our digestive system. And it’s particularly important in the stomach. The mucus lining in our stomach is essential for protecting its delicate tissues from the harsh acidic environment needed to digest food.

Obviously, our stomachs are responsible for breaking down the food we eat. This process involves hydrochloric acid and digestive enzymes, which work together to break down proteins and other food components.

These acids and enzymes are necessary for digestion, but they can also pose a risk to the stomach’s tissues.

And that’s where the stomach lining comes in. If it weren’t for that protective mucus layer, the stomach’s corrosive contents could cause real damage.

The Role of Mucus in Protecting the Stomach

The mucus lining in the stomach acts as a barrier, separating the stomach’s tissues from its acidic environment. It’s made up of water, electrolytes, and glycoproteins, which together form a thick, slippery substance. This mucus coating allows the stomach to carry out its digestive functions without harming its own tissues.

In addition to serving as a physical barrier, the mucus lining also contains substances called bicarbonates, which help neutralize the stomach’s acids. This neutralizing effect further protects the stomach lining from potential damage.

Maintaining a healthy mucus lining

A well-functioning mucus lining is essential for maintaining a healthy stomach. Several factors can contribute to a weakened or damaged mucus lining. These include stress, smoking, excessive alcohol consumption, and certain medications – even common ones like nonsteroidal anti-inflammatory drugs (NSAIDs).

A healthy mucus lining requires a balanced diet and habits that promote overall digestive health. Eating foods rich in fiber, staying well-hydrated, and managing stress can all contribute to a healthy digestive system.

This allows your stomach mucus to create a barrier between the stomach lining and the acidic environment, preventing the stomach from “digesting itself.”

—WTF fun facts

Source: “Watch: Episode 3: Why doesn’t your stomach digest itself?” — STAT News

WTF Fun Fact 13354 – The Longest Breath Hold

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Aleix Segura Vendrell set a record for the breath hold in 2016. To be precise, it was the longest static apnea breath-hold with pure oxygen pre-breathing. This means that Vendrell breathed pure oxygen before holding his breath, which allowed him to extend the duration. This category is separate from the “no oxygen assistance” static apnea records, in which the individual does not use any external oxygen source before holding their breath. As a result, he held his breath for an astounding 24 minutes and 3.45 seconds.

The world record for longest breath hold

Vendrell’s record was set in the static apnea category with pure oxygen pre-breathing, which means he inhaled pure oxygen before holding his breath. This technique saturates the blood and tissues with oxygen, allowing for a longer hold compared to normal air intake. Pre-breathing pure oxygen is not allowed in the “no oxygen assistance” static apnea category. In that category, athletes rely solely on their natural ability to hold their breath.

Freedivers like Vendrell undergo physiological adaptations that enable them to hold their breath for extended periods. One such adaptation is the mammalian dive reflex, a set of responses triggered by immersion in water. This reflex causes the heart rate to slow down (bradycardia), blood vessels in the extremities to constrict (peripheral vasoconstriction), and the spleen to release more oxygen-rich red blood cells into the bloodstream. These adaptations help conserve oxygen and prioritize its delivery to vital organs, such as the brain and heart.

Training for greatness

Another crucial adaptation is the ability to tolerate high levels of carbon dioxide (CO2) in the body. As CO2 levels rise during a breath hold, the urge to breathe becomes more intense. Freedivers train to withstand this urge, allowing them to maintain their breath-hold for longer durations.

Holding one’s breath for an extended period is not without risks. Hypoxia, a state of oxygen deprivation, can lead to loss of consciousness, brain damage, or even death. Therefore, it is essential that freedivers and those attempting long breath-holds take necessary precautions and undergo proper training to minimize these risks.

Safety personnel and medical staff supervise freediving competitions and record attempts to ensure that athletes receive immediate assistance if any complications arise. Additionally, freedivers often follow specific training regimens, gradually increasing their breath-hold durations and practicing techniques to manage the physical and mental challenges associated with this feat.

—WTF fun facts

Source: “What It Takes to Hold Your Breath for 24 Minutes (Yeah, It’s a Thing)” — Wired

WTF Fun Fact 13353 – New Deepfake Research

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New deepfake research is attempting to resurrect victims of crime for the common good. Of course, like all deepfakes, this too raises ethical concerns.

How new deepfake research brings people “back from the dead”

Deepfakes are a technology that uses artificial intelligence to create hyper-realistic images and videos of people. But so far, they’ve largely been misused to spread misinformation.

Now, researchers at the University of Florida and the University of Michigan are now exploring the possibility of using deepfake resurrections to promote the public good.

Their study focuses on “deepfake resurrections.” This refers to bringing deceased individuals virtually “back to life” using AI-generated images and videos. The researchers emphasize that their approach is different from controversial cases of deepfake resurrections, such as the ones used for political manipulation or commercial purposes. Instead, they aim to explore scenarios where deepfake resurrections could have a positive impact on society.

Can this technology be used for good?

The researchers conducted a study involving approximately 2,000 participants to explore the potential applications of deepfake resurrections. In this study, they focused on creating deepfake resurrections of victims of drunk driving and domestic violence. The aim was to examine the reactions of the participants and assess whether such resurrections could effectively raise awareness about these pressing social issues.

By using deepfake resurrections to share the stories of these victims, the researchers sought to humanize the issues and evoke empathy in the audience.

However, the PSA had little effect and a more negative than positive reaction. The researchers chalked this up to the lack of trust in deepfakes overall, noting that this affected the effectiveness of deepfake resurrections in raising awareness about social issues.

Ethical considerations

The exploration of deepfake resurrections for the public good raises several ethical questions. One major concern is consent. Since the deceased cannot provide consent, the researchers suggest obtaining permission from the deceased’s estate or family members. This would require creating guidelines to ensure that deepfake resurrections are used in a manner that respects the individual’s legacy and values.

Another ethical consideration is the potential emotional impact on the deceased’s loved ones. While some may find comfort in deepfake resurrections, others might perceive it as a disturbing or disrespectful act. To address this concern, researchers propose involving mental health professionals in the development of deepfake resurrections to ensure they are created with sensitivity and empathy.

Lastly, there is the question of authenticity. The researchers acknowledge the potential for deepfake resurrections to spread misinformation or perpetuate false narratives. To mitigate this risk, they suggest that deepfake resurrections should be transparently labeled as such and accompanied by disclaimers.

— WTF fun facts

Source: “Dying To Tell You: “Deepfake Resurrections” To Promote Public Good Explored By Researchers” — IFL Science

WTF Fun Fact 13350 – Netherlands Sperm Donor

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A Netherlands sperm donor has been told to stop donating after skirting the law and fathering over 550 children worldwide.

Sperm donation is a valuable service that can help countless couples and individuals realize their dreams of parenthood. However, the story of a man referred to only as “Jonathan” raises crucial questions about the potential consequences and ethical considerations surrounding sperm donation.

His prolific donations eventually led to him being banned from further donations due to concerns about the potential implications of having such a high number of offspring.

Netherlands sperm donor raises issues about genetic diversity

One of the primary issues arising from a single donor fathering a large number of children is the potential lack of genetic diversity within the donor-conceived community. This diversity is essential for maintaining a healthy population and avoiding potential genetic disorders. That’s because a limited gene pool increases the risk of inherited diseases and conditions. This can have long-term implications for the affected individuals and their families.

When a single donor has an excessive number of offspring, it increases the likelihood of his genetic traits being overrepresented within the donor-conceived community. This can lead to unintentional relationships between closely related individuals.

Donor regulations

This case highlights the importance of implementing stricter regulations on sperm donations. This includes limiting the number of offspring per donor and providing greater transparency in the industry. In fact, some countries have already implemented such measures.

In the Netherlands, where the prolific sperm donor’s case took place, they already strict regulations that govern sperm donation. Dutch law dictates that a sperm donor can father a maximum of 25 children.

However, the man managed to father over 550 children by bypassing these rules. He donated sperm at multiple fertility clinics and engaged in private arrangements outside of the Netherlands.

The lack of a centralized system to track donations across different clinics and private agreements facilitated his ability to donate far beyond the legal limit.

—WTF fun facts

Source: “Sperm donor who fathered 550 children ordered to stop” — BBC News

WTF Fun Fact 13349 – Rewatching Your Favorites

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When you truly want to chill out, do you find the latest Netflix show or do you enjoy rewatching your favorites? If you said the latter, you might be interested in a study that says it might be good for you.

Rewatching favorite shows can improve mental health

Studies have shown (and there’s one cited at the bottom for proof) that rewatching your favorite TV shows could help improve your mental health. It turns out the warm feelings of nostalgia we experience from reruns can actually help reduce stress and anxiety. So maybe it’s time to turn on some Lassie, The Munsters, The Jetsons…you get the picture.

Nostalgia is a powerful emotion. It can transport us back to the past. It also evokes fond memories of a time when things seemed simpler and more comfortable. This emotional response has been recognized as an effective coping mechanism against stress and anxiety.

If you’re struggling to deal with the pressures of everyday life, nostalgia can provide a reminder of the good times.

The comforting nostalgia of rewatching your favorites

One reason old reruns are so effective in reducing stress is the sense of familiarity they offer. When we watch a show we’ve seen before, we know what to expect and can anticipate the storyline. This predictability creates a safe and controlled environment that allows us to relax without any surprises or challenges.

One study even showed that when participants viewed familiar television programs, their levels of cortisol (a stress hormone) decreased significantly.

Our connection to familiar characters is also important to the soothing power of TV nostalgia. Over time, we form attachments to the people we see on screen. We may even feel as if we know them personally. These bonds can provide us with a sense of companionship, which is especially important when we’re feeling lonely or isolated.

When we’re feeling stressed, anxious, or overwhelmed, it’s good to find healthy ways to manage the feelings. By providing a comforting escape from reality, old reruns can help us unwind and decompress.

It can even have a meditative effect. The familiarity of the show means we don’t have to pay as much attention. This can help clear our minds, allowing us to focus on the present moment and let go of the worries and concerns that have been troubling us.

So, next time you want to practice self-care without leaving the couch, turn on some reruns of your favorite old show.

—WTF fun facts

Source: “The Temporal and Focal Dynamics of Volitional Reconsumption: A Phenomenological Investigation of Repeated Hedonic Experiences” — Journal of Consumer Research

WTF Fun Fact 13344 – Humans Can’t Feel Wetness

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The fact that humans can’t feel wetness seems ridiculous at first. You may have even read that it’s a misconception. But, technically speaking, we do not have the right “gear” to directly sense wetness – even though we all know when something is wet.

But how does that work?

Why humans can’t feel wet

Humans lack dedicated hydroreceptors – the specialized sensory receptors solely responsible for detecting wetness. As a result, wetness is not a distinct sensation for us, but rather an interpretation of multiple sensory inputs.

When a liquid, such as water, comes into contact with the skin, several different types of sensory receptors are activated. These include thermoreceptors, mechanoreceptors, and nociceptors. Thermoreceptors respond to temperature changes and can detect the cooling effect of the liquid on the skin. However, this response alone does not convey the specific quality of wetness.

Mechanoreceptors, responsible for sensing pressure and touch, provide information about the physical presence of the liquid. They detect the pressure exerted by the liquid and signal the brain accordingly. However, the activation of mechanoreceptors alone does not differentiate between wet and dry sensations.

Nociceptors, which detect pain and discomfort, may also play a role in the perception of wetness. If the liquid is extremely hot, cold, or otherwise causes discomfort, nociceptors are activated, contributing to the overall sensation. However, this response is not exclusive to wetness and can be triggered by other stimuli as well.

How we sense “wet”

Due to the absence of dedicated hydroreceptors, the brain must integrate and interpret these various signals to create the perception of wetness. It combines the inputs from thermoreceptors, mechanoreceptors, and nociceptors, along with other contextual cues, to generate the subjective experience of being wet.

While humans can recognize and differentiate wet sensations, it is important to note that wetness itself is not a distinct sensory modality. Rather, it is a perception resulting from the brain’s processing of multiple sensory inputs related to temperature, pressure, and even discomfort.

—WTF fun facts

Source: “Humans Technically Can’t Feel Wetness, And People Are Confused” — IFL Science

WTF Fun Fact 13341 – Parrot Video Calls

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Parrots are social animals. That’s why they don’t always make the best solo pets. However, recently, researchers have given pet parrots a new way to thrive after teaching the birds to use technology to make parrot video calls.

Parrot playtime with video calls

Researchers from Northwestern University, MIT, and the University of Glasgow conducted the study. With the help of some parrot parents, the team successfully trained parrots to communicate with each other.

Over several months, participants taught captive African grey parrots to use a custom-built video-calling system. First, researchers trained the birds to use touchscreens mounted inside their enclosures with easy-to-understand symbols and icons representing different contacts. The researchers rewarded their interactions with food treats. As the birds grew more comfortable with the devices, they were gradually introduced to video calls, first with their handlers and later with other parrots.

Parrots embrace technology

The African grey parrots demonstrated a remarkable ability to learn and adapt to the use of the video-calling system. Not only were they able to initiate calls, but they also showed preferences for specific contacts, indicating that they understood the purpose of the technology and were actively seeking social interaction through the calls.

The study found that the parrots were more likely to engage in video calls when they were alone in their enclosures. This suggests that the video-calling system provided social stimulation and companionship, especially in the absence of human interaction. The introduction of video-calling technology in captive settings could potentially improve the quality of life for these intelligent and social animals.

So, it turns out parrots like to video chat with one another just like humans do, and that it makes them feel less lonely. Many birds in the study stayed on the calls for the maximum allotted time and still choose to call their buddies from the research study over a year later.

According to Northwestern University:

“The most popular parrots were also the ones who initiated the most calls, suggesting a reciprocal dynamic similar to human socialization. And while, in large part, the birds seemed to enjoy the activity itself, the human participants played a big part in that. Some parrots relished the extra attention they were getting from their humans, while others formed attachments for the humans on the other side of the screen.”

—WTF fun facts

Source: “Scientists Taught Pet Parrots to Video Call Each Other—and the Birds Loved It” — Smithsonian Magazine

WTF Fun Fact 13338 – Monkey in the Mirror

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It’s not until we’re around 2 years old that we figure out what the mirror is showing us. And not all animals can recognize their own reflections. But if you train a rhesus monkey in the mirror, it will the first thing it’ll do is check out its genitals.

The monkey in the mirror

A 2015 study found that rhesus monkeys are capable of recognizing themselves in mirrors and engaging in self-exploration behaviors, but only after some training. The research helps shed light on the cognitive abilities of non-human primates and their level of self-awareness.

The researchers trained a group of rhesus monkeys to touch a red dot on their faces after seeing it in a mirror. This task is commonly used to test an animal’s ability to recognize itself in a mirror and is considered a measure of self-awareness. It’s called the “standard mark test.”

It took several weeks of training for rhesus monkeys to pass the standard mark test. But, eventually, they were able to recognize themselves in the mirror and understand that the reflection was a representation of their own bodies.

The first thing the monkeys did after that? Umm. Let’s just say they engaged in a range of self-exploration behaviors.” And they started with their own genitals.

Monkey see

The rhesus monkeys didn’t spend all their time “down there” though. They eventually moved on to the nose and mouth, behavior similar to what has been observed in chimpanzees and orangutans.

The act of inspecting their own genitals may seem amusing, but it actually provides insight into the cognitive abilities of non-human primates. The ability to recognize oneself in a mirror is considered a measure of self-awareness. And that’s a crucial component of consciousness.

Self-awareness allows animals to engage in complex social behaviors, such as empathy, cooperation, and deception.

Rhesus monkeys’ ability to recognize themselves in mirrors and engage in self-exploration is significant because it suggests that they have a level of self-awareness that we previously thought unique to humans.

The study also has implications for our understanding of animal welfare. Animals that are self-aware are more likely to experience emotions, including pain, fear, and stress. This means that they may be more susceptible to negative welfare impacts, such as confinement and isolation.

If we understand the cognitive abilities of non-human primates, we can work towards improving their welfare.

—WTF fun facts

Source: “Monkeys Learn to Recognize Themselves in a Mirror – And Promptly Check Out Their Butts” — Discover Magazine

WTF Fun Fact 13337 – Light Pollution

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Usually, when we think about pollution, we’re worried about smelling it or ingesting it somehow. Simply seeing it isn’t thought of as dangerous. But did you know light itself could be a sort of “pollutant”? Light pollution is a growing problem that is affecting us and our planet in many ways.

What is light pollution, and how does it hurt us?

Light pollution is the use of artificial light that is excessively bright or misdirected. For example, when streetlights or buildings shine light upwards into the sky. Sure, we need a lot of our street lights to keep us safe on roads and sidewalks, but so many lights and lights that are shining so broadly or brightly can really mess up our sleep and our ecosystem.

For starters, excess and misdirected light has serious consequences for nocturnal animals. It can disrupt their migration patterns, feeding habits, and breeding cycles. And as we know, everything on earth is interconnected in some way.

But light pollution also has a direct negative effect on human health. Our exposure to artificial light at night can interfere with our circadian rhythms. So think about how much light you can still see in your room when you shut off your light fixtures. Can you still see lights from streetlamps? Billboard? Store signs? Neighbors’ holiday decorations?

Exposure to light can lead to a range of health problems, including sleep disorders, obesity, and depression. It can also disrupt our hormones.

A waste of energy

Light pollution also requires energy consumption. And as we know, this can produce greenhouse gas emissions. So by reducing light pollution, we can help our ecosystem, ourselves, and reduce the energy consumption that negatively impacts our future.

What can we do to address the problem of light pollution? One solution is “dark-sky friendly” lighting. This means using lighting fixtures that are designed to minimize the pollution. It wouldn’t involve installing all new light fixtures. Rather, it involves the use of shields or hoods that would direct light downwards (which is where we need it to see roads and sidewalks anyway) instead of upwards. Using these fixtures can reduce the amount of excess and misdirected light while keeping us safe.

Most people don’t even know about light pollution and how it affects them. But once they do, they generally take steps to reduce their own contributions to it. (And we bet the neighbors are grateful!)

Reducing your light output might mean turning off unnecessary lights at night, using lower-wattage bulbs, and making sure outdoor lights only shine downwards.

If you’re seeking some darkness in order to see the stars at night, check out the International Dark-Sky Association. It’s a nonprofit organization that works to preserve and protect the night sky, and it has designated more than 100 Dark Sky Places around the world, including parks, cities, and communities that are committed to reducing light pollution and preserving the beauty of the night sky.

—WTF fun facts

Source: “Light pollution” — National Geographic

WTF Fun Fact 13336 – Oceans with More Plastic Than Fish

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Imagine a world where the oceans have more plastic in them than fish (by weight). Well, if you’re still around in 15 years, you might not have to imagine it.

Do our oceans have more plastic than fish?

According to the WWF (cited below):

“Whilst plastic has revolutionized our way of life since it was invented in the 1950s, the problem is that most of the plastic ever made still exists. The amount of plastic in the ocean is expected to double in the next 15 years, and by 2050 there could be more plastic than fish in the sea (by weight).

There are giant plastic islands floating on the ocean surface, and beaches around the world are increasingly littered with plastic rubbish even in the Arctic. It may come as a shock to know that most of the plastic in the ocean is out of sight, either underwater or on the ocean floor….90% of seabirds have plastic in their stomachs and half of marine turtles have eaten plastic. Sea life chokes on plastic rubbish or gets tangled in it, often causing a painful slow death. And plastic pollution is contributing to the breakdown of coral reefs.”

Wow, that’s depressing.

What’s the problem with plastics?

The problem with plastic is that it doesn’t biodegrade like other materials. Instead, it breaks down into smaller and smaller pieces, called microplastics, which stick around for centuries. Microplastics enter the food chain and accumulate in the bodies of land animals and marine life. This obviously effects humans eventually too.

Our plastics end up affecting over 700 species of marine animals, including sea turtles, dolphins, and whales. These animals can become entangled in plastic debris or mistake plastic for food, leading to starvation or blockages in their digestive systems.

Plastic disrupts the entire ecosystem. For example, plastic debris can alter the flow of water, which can affect the movement and distribution of plankton, the base of the marine food chain. This can have ripple effects throughout the ecosystem, ultimately impacting human populations that rely on the ocean for food and income.

How did we get to this point?

Plastic is cheap and convenient and people don’t like to be inconvenienced or have their minds changed. The use of plastic has become ubiquitous and we show no signs of giving it up (soggy paper straws aren’t going to solve the whole problem).

Another problem is that we don’t properly dispose of or recycle plastic. Researchers estimate that we’ve only recycled around 9% of all plastic ever produced, and we send the majority to landfills. So now it’s accumulating.

Addressing industries will be a big step. For example, the clothing manufacturing, carpet, and soft drink industries use huge amounts of plastic. Of course we can reduce our use of single-use plastics, but curtailing the use of plastics in manufacturing is going to have a much bigger effect than banishing your plastic baggies. You can help by supporting policies and regulations that promote sustainable practices and reduce plastic waste.

Another important step is to properly dispose of plastic waste can prevent it from entering the environment and ultimately ending up in our oceans. That’s another job primarily for industries, but we can do our part as individuals as well.

Want to do something immediately to support conservation efforts to reduce plastic pollution in the ocean? You can participate in beach cleanup if you live nearby a body of water. Otherwise, an email or phone call to the politicians you vote for is a good start.

—WTF fun facts

Source: “Will there be more plastic than fish in the sea?” — WWF

WTF Fun Fact 13335 – Fast Fashion Pollution

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Cheap clothing is convenient, and changing out our wardrobes every season might make us feel more fashionable, but fast fashion pollution is a bigger problem than we imagined.

The United Nations named the fashion industry the second most polluting industry in the world. It produces 8% of all carbon emissions, 20% of all global wastewater, and uses about 93 billion cubic meters of water annually. The fashion industry is responsible for more carbon emissions than international flights and global shipping combined.

Fast fashion pollution

According to a study published in the journal Water (cited below), the fast fashion industry is a major contributor to water pollution since these brands produce large quantities of clothing at a rapid pace. This leads to excessive water usage as well as the release of harmful chemicals into our waterways.

The study found that fast fashion brands use up to 2,700 liters of water to produce a single cotton t-shirt. This excessive water usage can lead to the depletion of water resources in areas where water is already scarce.

The industry also contributes to water pollution through the use of hazardous chemicals in the manufacturing process. Many brands use synthetic dyes and chemicals that can be harmful to the environment and human health.

The disposal of fast fashion clothing also contributes to water pollution. Many fast fashion items are made from synthetic materials that do not biodegrade, leading to them ending up in landfills or incinerators. The disposal of these items can release harmful chemicals into the air and leach into nearby waterways.

How to make it stop

Well, money talks. You can always invest in clothing that lasts or repair the clothing you have.

To address the water pollution associated with fast fashion, companies do try to implement more sustainable manufacturing practices. But it’s unclear to what extent this really works if they’re still selling so many garments.

Some fast fashion brands are incorporating recycled materials into their products, reducing the amount of virgin materials needed and the associated water usage. Others are implementing closed-loop systems, which recycle water and chemicals used in the production process.

But in the end, consumers may play the biggest role in reducing the water pollution associated with fast fashion. Choosing to buy clothing made from sustainable materials and produced using sustainable manufacturing practices is an option. But a better one is reducing clothing waste by donating or recycling clothing to keep textiles out of landfills and reduce the pollution associated with textile disposal.

—WTF fun facts

Source: “The Environmental Impacts of Fast Fashion on Water Quality: A Systematic Review” — Water (Journal)

WTF Fun Fact 13334 – Getting Electricity from Mud

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How can you get electricity from mud? Well, it turns out there’s a bacteria for that.

In a fascinating development that could have huge implications for the future of energy production, scientists have discovered a species of bacteria called Geobacter sulfurreducens produce tiny wires called pili that allow them to transfer electrons from mud to metals or other conductive materials.

Pulling electricity from mud

Geobacter sulfurreducens belongs to a group of organisms called electrogenic bacteria. They’re unique in that they are able to transfer electrons from organic matter to metals or other conductive materials. This process is known as extracellular electron transfer. It allows the bacteria to generate electricity using devices called microbial fuel cells (MFC).

Generating electricity from mud could be useful for powering small devices in remote areas where traditional power sources aren’t available. Since the bacteria can be easily cultivated in large quantities, the equipment needed to generate electricity from mud is relatively simple and inexpensive. That can also make it a good option for developing countries or areas where traditional power sources are unreliable.

The bacteria could also be used for environmental cleanup. It’s even an environmentally friendly technology since the bacteria consume organic waste and produce electricity as a byproduct.

A broader trend

While this may all seem beyond belief, scientists have actually been using bacteria to generate electricity for a while. They have experimented with wastewater, food waste, and even human urine. The hope is that these bacterial technologies can eventually help us address climate change, energy security, and environmental degradation.

Of course, there are some serious challenges to face before we can implement this kind of tech. For example, it requires massive amounts of bacteria to generate a decent amount of electricity. So there are valid concerns about the scalability of this technology. Then there are the obvious ethical concerns people have about using living organisms to help clean up messes humans have made.

Despite all this, the potential of bacteria-based electricity generation may play an important role in shaping our future.

—WTF fun facts

Source: “Mud power: how bacteria can turn waste into electricity” — The Conversation