Science

WTF Fun Fact 13292 – Earthquake Lights

Earthquakes can generate electromagnetic waves that are detectable by animals hours or even days before the actual event occurs. This phenomenon is known as the “earthquake lights” or “seismic lightning” and is still not fully understood by scientists.

The strange phenomenon of earthquake lights

Have you ever heard of “earthquake lights” or “seismic lightning”? This phenomenon has intrigued scientists for years. The lights appear to be the result of electromagnetic waves. Their faint glow appears to be detectable by animals (and certain forms of technology).

Regardless of its origin, this phenomenon has the potential to provide valuable insights into the physics of earthquakes.

According to National Geographic (cited below), “Earthquake lights can manifest themselves in different ways, from a faint, diffuse glow on the horizon to flame-like streamers emanating from the ground.” They can appear in a variety of colors, including white, blue, yellow, and red.

These lights have been observed in various forms, including:

  • luminous clouds
  • flashes of light
  • glowing balls of light that hover over the ground

Predicting earthquakes

Studies have shown that some animals, including dogs and horses, are able to sense the electromagnetic waves produced by earthquakes. As a result, they may exhibit unusual behavior before an earthquake strikes.

Similarly, some researchers believe that the lights themselves may be an early warning sign of an impending earthquake. Eventually, this could allow us to prepare and evacuate before the shaking begins.

These lights have been observed for centuries. But they remain poorly understood by scientists who are still working to determine how and why they are produced. Some suggest that they are the result of electrical charges building up in rocks and soils under stress. Others propose that they may be related to the release of gases from the Earth’s crust.

In 1965, residents of Matsushiro, Japan, witnessed a spectacular display of earthquake lights before a major earthquake struck the area. The lights appeared as bright, white flashes that seemed to be coming from the ground. The earthquake, which had a magnitude of 7.0, caused significant damage in the region.

— WTF fun facts

Source: “Earthquake Lights – Explained” — National Geographic

WTF Fun Fact 13287 – The First Spacewalk

On March 18th, 1965, Soviet cosmonaut Alexei Leonov made history by becoming the first person to walk in space. Leonov left his spacecraft, the Voskhod 2, and floated in space for 12 minutes and 9 seconds. The first spacewalk paved the way for future space exploration and opened up new possibilities for scientific research in space.

The Soviets made the first spacewalk

The spacewalk was a remarkable achievement for the Soviet space program, which was in competition with the United States at the time to achieve milestones in space exploration. The mission was not without its challenges, however. Leonov’s space suit had inflated in the vacuum of space, making it difficult for him to move and causing him to experience overheating.

Despite these challenges, Leonov successfully completed his spacewalk and returned to the spacecraft, where he faced another problem. The spacecraft’s automatic landing system had failed, and Leonov and his crewmate had to manually steer the spacecraft to a safe landing.

Subsequent spacewalks

Since Leonov’s historic feat, many other astronauts and cosmonauts have followed in his footsteps (or rather, lack of footsteps). Here are some quirky facts about spacewalking:

  • The longest spacewalk in history was conducted by Russian cosmonauts in 2013. They spent 8 hours and 7 minutes outside the International Space Station.
  • Spacewalks are often referred to as “EVA,” which stands for “extravehicular activity.”
  • Spacewalkers wear special suits called Extravehicular Mobility Units (EMUs). These are designed to protect them from the extreme conditions of space.
  • During a spacewalk, astronauts and cosmonauts tether themselves to the spacecraft to prevent them from floating away into space.
  • The first American to conduct a spacewalk was Ed White in 1965, just a few months after Leonov’s historic walk.
  • In 1984, American astronaut Bruce McCandless made history. He became the first person to fly freely in space without being tethered to a spacecraft.
  • The first all-female spacewalk took place in 2019. Astronauts Christina Koch and Jessica Meir conducted a 7-hour walk to replace a failed power controller.

As space exploration continues to advance, it’s likely that we’ll see even more remarkable achievements in spacewalking. But Alexei Leonov’s historic spacewalk on March 18th, 1965 opened up a new world of possibilities for space exploration.

— WTF fun facts

Source: “The First Spacewalk” — New Scientist

WTF Fun Fact 13285 – How Blind People Dream

Have you ever wondered what blind people experience in their dreams? You’re not alone – the question of what blind people dream has intrigued researchers for years. More specifically, the question is about the dreams of those who have been blind since birth. These are people who haven’t collected visual images to fuel their dreams.

According to The Conversation (cited below):
“Humans born without sight are not able to collect visual experiences, so they understand the world entirely through their other senses. As a result, people with blindness at birth develop an amazing ability to understand the world through the collection of experiences and memories that come from these non-visual senses.”

Insights into how blind people dream

People who are born blind do dream, despite having never seen visual images. But their dreams seem to be different from those of sighted individuals. For example, instead of visual images, blind people may experience dreams that involve more vivid sensory experiences, such as sounds, smells, and touch.

The article in The Conversation by neuroscientist John J. Foxe and psychologist Andrei Gorea notes, “the visual areas of the brain are not dormant during dream sleep in congenitally blind people, but instead get co-opted for processing other senses.” This means that while blind people may not see images in their dreams, their brains are still processing sensory information. And they do this in much the same way that sighted people process visual information.

One study conducted by the University of Copenhagen found that blind individuals may have more intense and emotional dreams than sighted individuals. That’s because their brains may compensate for a lack of visual stimuli by enhancing other sensory experiences. As Foxe and Gorea explain, “this is thought to be due to the fact that the brain has to work harder to create a sensory-rich environment in the absence of visual input.”

The study also found that people who were born blind may dream more about other people and interpersonal interaction. That makes sense since blind people may rely more heavily on senses like hearing and touch to interact with others. Foxe and Gorea note that “this may result in a greater emphasis on interpersonal relationships in dream content.

Seeing dreams

Interestingly, some blind individuals really do seem to dream in visual images. This phenomenon is called “sighted dreaming.” It has been reported by some blind individuals, and researchers hypothesize that it may be related to the brain’s innate ability to construct mental images based on experiences.

There’s still a lot we don’t know about the dream experiences of those who have been blind since birth. But research has given us fascinating insights into how the brain processes sensory information and uses it during dream sleep. Foxe and Gorea note: “…this research has implications…for our understanding of how the brain adapts to sensory deprivation more generally.”

Overall, the dream experiences of blind individuals continue to intrigue us. As our understanding of the brain and its functions continues to evolve, we may discover even more fascinating facts about the dream experiences of blind individuals and how they differ from those of sighted individuals.

— WTF fun facts

Source: “What do blind people experience in their dreams?” — The Conversation

WTF Fun Fact 13283 – The Color Red

The color red can make you feel hungrier and may even increase physical performance and attention to detail, making it a popular choice in restaurants, gyms, and academic settings.

The psychology of the color red

Color psychology is an interesting field. It explores how different colors can affect our mood, behavior, and perception without us really even noticing. It can even ramp up excitement levels.

As a warm color, red is also thought to stimulate our senses in a way that may increase our heart rate and even our blood pressure.

According to Scientific American (cited below):

“Some of the hue’s significance has a biological basis. Many humans get red in the face from increased blood flow when they are angry. A similar process activates a flush of embarrassment or a more flirtatious blush. Seeing red also triggers some surprising behaviors. For instance, drivers blocked in traffic by a red car react faster and more aggressively than drivers barred by vehicles of other colors.”

Red can evoke feelings of hunger and appetite. That’s why it’s often used in restaurants and food packaging. Studies have shown that people tend to eat more when they are surrounded by the color red.

Next time you drive around town, notice how many fast-food restaurants and other dining establishments use red in their logos and signage.

Red gets us moving – mentally and physically

In addition to its effects on appetite, the color red is also associated with physical performance and attention to detail. In fact, studies have shown that athletes who wear red uniforms or see the color red before a competition tend to perform better. They even have a higher chance of winning. This is because red can increase arousal and improve focus, which can be beneficial in athletic settings.

Similarly, the color red has been shown to improve performance in academic settings. Studies have found that students who are exposed to something red before an exam tend to perform better and have higher levels of concentration. That’s because red can increase attention to detail and improve memory retention.

Despite its many benefits, the color red can also have negative associations. We also tend to associate red with danger, warning signs, and stop signs. These can create feelings of stress and anxiety in some people.

In addition, some people tend to feel aggression and anger around this color. That’s why architects and designers often avoid using red in certain contexts, such as in hospitals and mental health facilities.

— WTF fun facts

Source: “How the Color Red Influences Our Behavior” — Scientific American

WTF Fun Fact 13276 – Hallucigenia

If you’re a fan of bizarre creatures that once roamed the Earth, then Hallucigenia is probably right up your alley. This ancient invertebrate still confounds scientists today with its appearance and mysterious origins. The Hallucigenia lived during the Cambrian period. That’s about 515 to 500 million years ago.

What’s in a name?

We derive its name from its strange anatomy and shape. At the front of its body, it has a pair of tentacles. Next, its long, narrow body was covered in spines and spikes – likely for protection against predators rather than to simply make it look cool.

It also had seven pairs of legs, each with multiple spikes, and a pair of spiky protrusions on its head.

The Hallucigenia’s body ended in a pair of hooks, and it had a thin, flexible skin that may have been used for gliding or swimming. It’s definitely not something you’d want to hug.

With its long spines, claw-like appendages, and worm-like body, some have dubbed it a “nightmare creature.” Scientists are puzzled by this unique anatomy since the creature is not built like animals on Earth today.

Hallucigenia loco-motion

You might think because it has legs that it “walks.” But no, it moves in the creepiest way possible.

Instead of walking or crawling on the ground, the Hallucigenia used its long spines to travel across the sea floor. We call this type of locomotion “arm-leggedness,” and we see it in very few creatures today.

Scientists believe that the Hallucigenia was a simple, bottom-dwelling creature that likely lived in shallow seas. Its long, tubular body could have been an advantage to burrow into the sediment or to probe for food.

Researchers once thought it was a primitive crab, but it is not included in the group called Lobopodia since it’s more likely that it’s an early offshoot of a group of animals called Panarthropoda. This would make it an evolutionary “cousin” of modern-day arthropods such as spiders and insects.

Hallucingenia and the fossil record

The fossil record of Hallucigenia serves as a window into the Earth’s past. It provides a glimpse into how our planet’s ecosystems and organisms have evolved over millions of years. And as researchers continue to make new discoveries, it will be interesting to see how scientists piece together the puzzle of this strange creature and learn more about its story.

It might not be the cuddliest creature in history, but the Hallucingenia is no hallucination. It’s one of the planet’s fascinating mysteries born in a time when nothing like a human existed. The Cambrian period saw an explosion in the evolution of new types of creatures. And we know a lot about it because there were many hard-bodied creatures that got preserved in the fossil records (as opposed to being smashed into goo).

Humans would eventually evolve from the first vertebrates (creatures with a backbone) that emerged during this time. But that was going to take tens of millions more years.

— WTF fun facts

Source: “What is hallucigenia?” — BBC Science Focus

WTF Fun Fact 13273 – Men’s Nipples Lactate

It’s extremely rare unless something is wrong with the body, but technically, men’s nipples lactate. That is, they are capable of producing milk, which is the function of a nipple.

All fetuses develop nipples. Male, female, and intersex fetuses develop nipples during the early stages of fetal development, typically around 6 to 7 weeks gestation. This is because nipples are a fundamental part of the human anatomy. It is only later in fetal development that sex-specific features begin to emerge, such as the development of genitalia.

How, when, and why do men’s nipples lactate?

While lactation in men is a rare occurrence, it is not something that should be dismissed as a mere anomaly. Despite being uncommon, men can and do produce breast milk in certain circumstances. For example, it may happen during hormonal imbalances or after frequent stimulation of the nipples. This phenomenon has been documented in a variety of mammalian species, including humans. Yet much remains to be understood about the underlying biology and mechanisms driving male lactation.

Male lactation is also known to occur in response to the hormonal changes brought about by certain medical conditions. For example, in some cases, male lactation is triggered when a man experiences a rise in the hormone prolactin.

The role of prolactin

The hormone responsible for milk production in females plays a similar role in males. Prolactin stimulates milk production in the mammary glands, and in males, it is secreted by the anterior pituitary gland.

However, the prolactin levels in males are much lower than in females. This is why milk production in males is rare, and the amount produced is usually not enough to sustain an infant. The biology involved in male lactation involves the mammary glands, which are present in both men and women.

While these glands are not fully developed in men, they still have the potential to produce milk. The process of male lactation can also be triggered by stress, certain medications, or a tumor in the pituitary gland.

Stimulating lactation in men

Another cause of male lactation is the use of medications that can mimic the hormonal effects of pregnancy and breastfeeding. For example, medications containing estrogen can cause an increase in prolactin production, leading to milk production in men’s mammary glands.

Despite the rarity of male lactation, some men have been able to nurse their infants successfully. One example is a man named Jack Newman. After adopting a child, Newman was able to induce lactation through a combination of hormone treatments and frequent nursing sessions.

Male lactation may seem like a strange and abnormal occurrence. But the rare phenomenon of male lactation is a fascinating subject. And it has captured the interest of scientists and laypeople alike. While much remains to be discovered, continued research into male lactation could have significant implications for our understanding of infant nutrition and lactation science as a whole. The underlying mechanisms that allow men to produce milk could help to improve our understanding of the biology of lactation in general. This could lead to breakthroughs in lactation-related issues such as mastitis and low milk supply.

Despite these potential benefits, male lactation remains a largely unexplored field of study.

— WTF fun facts

Source: “Strange but True: Males Can Lactate” — Scientific American

WTF Fun Fact 13270 – Maggot Therapy

Maggot therapy involves using disinfected fly larvae (maggots) to help remove damaged tissue from wounds. And while it may sound gross, it’s making a comeback in mainstream medicine.

What is maggot therapy?

Maggot therapy, also known as maggot debridement therapy (MDT), is a medical treatment that uses live maggots to clean and heal wounds in humans. Granted, it sounds like an unpleasant approach to wound care. But it actually has a long and fascinating history dating back centuries. For example, maggots were used by the Mayans and other Native Americans.

In the early 19th century, a French surgeon named Jules-Francois Germain found that maggots could clean wounds more effectively than traditional methods like cauterization. Their use could also help avoid amputation.

In and out of style

Throughout the 19th century, doctors and surgeons used the technique to treat a variety of conditions like ulcers, abscesses, and gangrene. But despite its effectiveness, maggot therapy fell out of favor in the mid-20th century. This is partly due to the development of antibiotics. Those are far easier to convince someone to take!

However, in the 1980s, antibiotic resistance became a huge problem thanks to the overuse of antibiotics. This helped revive the interest in using maggots in medicine. Scientists even developed new techniques for sterilizing and breeding maggots so they would pose less risk. This also helps patients see them as lab-created entities rather than something you’d find in a dumpster.

Today, maggot therapy is recognized as a safe and effective treatment for a variety of wounds. It’s used for treating diabetic foot ulcers, venous stasis ulcers, and pressure ulcers.

Maggots today

While still relatively rare, doctors do use maggots in hospitals today. They’re carefully applied to wounds in a special dressing so they can feed on the dead tissue and secrete enzymes to kill bacteria and promote healing. When the maggots are removed after several days, a wound is cleaned and dressed and ready to let the body take over the healing.

Maggots might sound gross, but they’re a cost-effective treatment option. They are also particularly helpful for patients who have not responded well to other forms of wound care. As a result, this therapy is gaining increasing recognition as a valuable tool in the treatment of chronic wounds.

— WTF fun facts

Source: “Entomological Medicine: How One Scientist is Working to Bring Maggot Therapy Into Wider Use” — Entomology Today

WTF Fun Fact 13265 – Loud Music in Restaurants

Have you ever noticed loud music in restaurants during prime dinner or drink hours or on popular nights for socializing? Well, there’s a reason for that. Loud music makes us eat and drink more and do it faster.

Why is there such loud music in restaurants?

Restaurants often play music that is louder and faster-paced during peak hours, such as Friday and Saturday nights. This is done to create a sense of energy and excitement, which can lead diners to eat faster and order more food and drinks.

Studies have shown that loud music can increase consumption by up to 25%.

One study from France (cited below, from EurekAlert) showed how it works:

“Researchers discretely visited two bars for three Saturday evenings in a medium-size city located in the west of France. The study subjects, 40 males 18 to 25 years of age, were unaware that they were being observed; only those who ordered a glass of draft beer (25 cl. or 8 oz.) were included. With permission from the bar owners, observers would randomly manipulate the sound levels (either 72 dB, considered normal, or 88 dB, considered high) of the music in the bar (Top 40 songs) before choosing a participant. After the observed participant left the bar, sound levels were again randomly selected and a new participant was chosen.

Results showed that high sound levels led to increased drinking, within a decreased amount of time.”

Creating ambiance

Restaurants use a variety of strategies to create a certain ambiance and atmosphere for their customers. Music is one of the most effective tools they have. While music can certainly enhance the dining experience by creating a mood or setting a tone, it can also have a subconscious impact on how much and how quickly we eat.

For example, one study found that diners who were exposed to loud, fast-paced music ate their meals more quickly. They also drank more than those who listened to slower, softer music or no music at all. Another study found that diners who were exposed to music with a tempo of 130 beats per minute (the same tempo as many popular dance songs) consumed more food and drinks. People consumed less when they listened to music with a slower tempo.

This effect is not just limited to music. Other environmental factors such as lighting, decor, and the color of the plates and walls can influence our eating habits. People tend to eat less when they are in a relaxing environment with dim light and muted colors.

So next time you’re dining out on a busy night, be aware of the music. It might be influencing your eating habits more than you realize!

— WTF fun facts

Source: “Loud music can make you drink more, in less time, in a bar” — EurekAlert

WTF Fun Fact 13264 – Duck Have Waterproof Feathers

Did you know that ducks have highly waterproof feathers? It makes sense, right? After all, they’d probably freeze in cold weather if something wasn’t helping to insulate them.

How do waterproof feathers work?

A duck’s waterproof feathers are due to the special oil that they produce.

Ducks have a special oil gland called the preen gland (also known as the uropygial gland) that is located at the base of their tail. They spread the oil over their feathers as they preen themselves.

This oil also keeps the duck’s feathers dry and helps it to float in water. And to top it off, it even contains antimicrobial properties that help to keep the duck’s feathers clean and free from harmful bacteria.

Duck feathers also trap air and provide insulation to keep them warm in cold water. And they have a unique structure that helps to repel water.

The feather shaft is made up of a hard, central quill surrounded by a series of barbs and barbules that interlock to create a flat surface. These barbs and barbules are arranged in a particular way that allows them to lock together tightly. This creates a barrier that prevents water from penetrating through the feather to the bird’s skin.

This unique feather structure is what allows ducks to stay warm and dry in wet environments and helps them to regulate their body temperature.

The beauty of duck feathers

Duck feathers aren’t just practical. They’re also beautiful in ways that humans can’t even see. Their colors aren’t always visible to the human eye.

Many duck feathers contain iridescent structural colors that are created by the way that light reflects off of the feather’s surface. This can create a range of different colors and patterns, from bright greens and blues to deep purples and reds.

Male ducks often have brightly colored feathers that are used to attract mates during the breeding season. For example, male mallards have distinctive green heads and necks, while male wood ducks have a colorful pattern of red, green, and white feathers on their faces and bodies. — WTF fun facts

Source: “Waterfowl feathers” – Ducks Unlimited