WTF • Fun • Fact    ( /dʌb(ə)lˌju/  /ti/   /ef/ • /fʌn/ • /fækt/ )

     1. noun  A random, interesting, and overall fun fact that makes you scratch your head and think what the...

WTF Fun Fact 13441 – Dopamine Reward Prediction Error

The concept of the dopamine reward prediction error is important for understanding the roots of learning, motivation, and even addiction. It’s all about how our brains respond to rewards (and how we get bored with the same reward over time).

What’s the point of dopamine?

Dopamine is a neurotransmitter (or “chemical messenger”) that plays a role in our brains’ reward system. In other words, it’s the star of the show when it comes to feelings of pleasure and satisfaction.

Think about how you feel when you sit down to your favorite meal. Or approach the counter with a long-sought item you saved up money to buy. Happy times! Right?

Well, one particularly interesting (and, frankly, kind of unfair) element of how dopamine functions is that once we already know what a reward will feel like, our brains don’t send out as much dopamine. This is the concept of the dopamine reward prediction error.

What is the dopamine reward prediction error?

Let’s dive a little deeper.

Imagine you’re at a new restaurant for the first time. You order a dish you’ve never tried before. To your pleasant surprise, it turns out to be delicious. Your brain rewards you with a burst of dopamine, creating a sense of pleasure and satisfaction. In essence, your brain is saying, “Good job! Let’s remember this for next time.”

Now, let’s fast-forward to your next visit to the same restaurant. You order the same dish, this time expecting it to be tasty. But here’s the catch – when you take the first bite, your brain’s dopamine release is less intense than the first time. This is because the pleasure derived from the meal was expected. This concept is known as reward prediction error.

Even when you’re eating your favorite meal, it may never taste as marvelous as the first time you had it.

What’s going on in the brain when there’s a dopamine reward prediction error?

Reward prediction error is your brain’s way of comparing the predicted reward (expectation) with the actual outcome. When reality exceeds your expectations, a positive prediction error occurs. And your brain increases its dopamine release.

Conversely, when the actual reward is less than expected (as so often happens in life!), a negative prediction error occurs. Few things are as good as we imagine them to be, and this results in a decrease in dopamine release. (Why did our brains stop playing nice?!)

Why is your brain being a jerk about dopamine?

This dopamine release mechanism seems to play a role in how we adjust our predictions based on outcomes. Technically, it helps us learn from our mistakes and successes. But clearly, it’s not all fun and games. Your brain doesn’t give you a trophy every time you do something good (at least not a big one).

This dopamine-driven learning process can be exploited in harmful ways too. Just think about addiction.

Some drugs generate a significant positive prediction error in our brains. In other words, we take them and (if we survive) we may get a massive release of dopamine that makes us feel great. But this tricks the brain into overvaluing the substance. And this can drive intense cravings and compulsive behavior.

The down side of dopamine

Whether it’s drugs or food or destructive behavior, repeated exposure leads to a decrease in the dopamine response. Unfortunately, this means our bodies require more of the substance to achieve the same effect. That’s addiction.

But here’s the good news – understanding the way our brains respond to reward prediction errors can open up possibilities for new therapeutic approaches. It is helping researchers develop interventions that ‘retrain’ the brain’s reward system to reduce the impact of negative prediction errors and boost our ability to learn from positive experiences.

— WTF fun facts

Source: “Dopamine reward prediction error coding” — Dialogues in Clinical Neuroscience

WTF Fun Fact 13440 – The Independence Day Date

If some of the U.S.’s founding fathers got their way, Americans the Independence Day date would be the 2nd of July.

Why is the U.S. Independence Day date the 4th of July?

On a blistering summer day in Philadelphia in the year 1776, a group of men in the Second Continental Congress convened. These “founding fathers” were ready to sever the bonds with their British overlords. This day was July 2nd, a date largely forgotten in the grand narrative of American independence.

Two of these influential men, Thomas Jefferson and John Adams, were sticklers for precision. They believed that July 2nd, not July 4th, should ring be America’s Independence Day. The Congress voted for independence on this day, – kind of a no-brainer, right?

Jefferson and Adams, who would later become presidents, firmly considered July 2nd to the true birth of American freedom.

Voting for Independence

On July 2nd, the Continental Congress voted in favor of Richard Henry Lee’s resolution for independence from British rule. This momentous decision effectively set the 13 colonies on the path to becoming the United States of America. An event of this magnitude surely deserved to be marked in history.

However, the document Americans now revere as the Declaration of Independence was finalized and formally adopted two days later on July 4th. This date engraved on the top of the document created a longstanding association with the birth of American independence. It was the date that was eventually printed in newspapers, establishing the Fourth of July in the collective consciousness of the public.

Arguing over the Inependence Day date

Jefferson and Adams harbored their beliefs passionately. Adams even went to the extent of reportedly turning down invitations to participate in Fourth of July events as a form of silent protest. He firmly believed that the celebrations were simply on the wrong day.

In a bizarre twist of fate, both Adams and Jefferson died on the same day, July 4, 1826, on the 50th anniversary of the adoption of the Declaration of Independence. The coincidence of their deaths on this date further romanticized the idea of July 4th as Independence Day.

Over the years, the debate has lost much of its steam. Americans now celebrate the Fourth of July Independence Day. The story of July 2nd remains a fascinating footnote in the saga of American independence, a testament to the complex and sometimes contentious process that birthed the nation we know today.

Does the Independence Day date really matter?

In the grand scheme of things, whether Independence Day falls on the second or fourth of July might seem trivial. Still, this tale serves as a potent reminder of the spirited debates and diverse perspectives that shaped the foundation of the United States.

And the next time you’re watching fireworks light up the night sky on the Fourth of July, remember the tale of July 2nd.

— WTF fun facts

Source: “When is the real Independence Day: July 2 or July 4?” — National Constitution Center

WTF Fun Fact 13439 – The Dog Days of Summer Explained


Does the phrase “Dog Days of Summer” conjure images of lethargic canines lazing in the heat? Well, the origins of this term reach far beyond our four-legged friends and into space.

What are the dog days of summer?

Ok, technically, it does have to do with a dog – Sirius, the Dog Star. Sirius is part of the constellation Canis Major, and it’s the brightest star in the Earth’s night sky.

The term “Dog Days” stems from the ancients, both Greeks and Romans, who noticed the coincidence of the hottest time of the year with the period when Sirius rose and set with the Sun. They hypothesized that the added radiance of Sirius was the cause of the intensified summer heat. Thus the phrase “Dog Days” in reference to Sirius’s constellation.

But the “Dog Days” are more than just a celestial phenomenon and a synonym for summer swelter. They have cultural and historical significance dating back thousands of years. The Greeks, for instance, saw the period as a time of potential disaster, heralding fever, catastrophe, and even the downfall of empires.

Wobbling dog days

Fast forward to the present, and the “Dog Days” still persist in our lexicon. However, due to a phenomenon called precession (the slow wobble of Earth’s rotational axis), the dates during which Sirius rises and sets with the Sun have slowly shifted over centuries. Yet, the phrase “Dog Days” remains tethered to the heart of the summer. It’s recognized in the Northern Hemisphere primarily from July 3 to August 11.

The warmest days of summer, those long afternoons that stretch languidly towards the evening, are connected to a distant cosmic spectacle occurring about 8.6 light-years away. That is the beauty of astronomy and the power of human observation, linking us to the stars and the seasons in unexpected ways.

So, next time you’re feeling the heat of summer bearing down, spare a thought for Sirius and its ancient connection to these sultry days. The “Dog Days” are a cosmic link, a reminder that even on the hottest days of summer, we are all under the same sky.

— WTF fun facts

Source: “Stars and canines collide in ‘dog days’” — Christian Science Monitor

WTF Fun Fact 13438 – Killer Whales are Dolphins

Here’s a bit of trivia that might just turn your marine world upside down: killer whales, also known as orcas, aren’t whales. They’re actually the largest dolphins in the sea! That’s right, Shamu, the poster child for what we envision when we think of whales, is really more Flipper than Moby Dick.

Are orcas whales or dolphins?

Orcas, known for their black bodies, striking white patches, and formidable size, are a sight to behold. However, despite their common name – killer “whale” – these majestic creatures are more closely related to their smaller, playful dolphin cousins.

Now, this might seem like a marine biologist trying to mess with you, but it’s all in the scientific classification. Orcas are part of the oceanic dolphin family, known as Delphinidae, which includes other well-known species like the bottlenose dolphin and the common dolphin. Essentially, all killer whales are dolphins, but not all dolphins are killer whales.

In fact, the orca’s scientific name, Orcinus orca, loosely translates to ‘demon from hell’, a nod to their reputation as fierce hunters. But don’t let the ominous name scare you, these creatures are incredibly intelligent and social.

Orcas, like their dolphin relatives, are known for their intelligence and complex social structures. They live in tight-knit groups known as pods, led by a matriarch, often the oldest female. Within these pods, they communicate using a series of clicks, whistles, and body movements.

What’s fascinating about orcas is that different pods can have different cultures, dialects, hunting techniques, and even dietary preferences. This level of cultural diversity is virtually unheard of outside of human societies, further cementing their place in the pantheon of intelligent life on Earth.

Classifying creatures

However, their classification as dolphins doesn’t make them any less ‘killer’. They are apex predators, the top of the food chain, preying on seals, fish, squid, and even other whales. Their name, ‘killer whale’, is actually a bit of a misnomer. It originates from the term ‘whale killer’, coined by sailors who observed these dolphins attacking larger whales.

Despite being top predators, orcas face a host of challenges in the modern world, ranging from pollution and loss of prey to climate change and captivity. Our understanding of orcas, their behaviors, and their needs, is crucial for their protection.

Perhaps one of the best ways we can appreciate orcas is to realize that they’re not so different from us. They’re intelligent, they’re social, they’re diverse, and they’re vulnerable. They’re dolphins that have adapted to their environment in remarkable ways, rising to the top of the oceanic food chain.

So next time you hear the term “killer whale”, remember, these magnificent creatures are actually the ocean’s largest dolphins. Just another example of how the natural world continues to surprise and inspire us!

— WTF fun facts

Source: “Is an orca (killer whale) a whale or a dolphin?” — WDC

WTF Fun Fact 13437 – Nuclear Pasta

Luckily, nuclear pasta is not coming to a dinner plate near you.

Imagine the densest material in the universe. It’s far harder than a diamond. In fact, this stuff is ten billion times stronger. Nestled in the heart of a neutron star, there’s a material that goes by the name: nuclear pasta.

Why is it called nuclear pasta?

Welcome to the most outlandish, mind-boggling part of astrophysics. Neutron stars, the remnants of massive stars that exploded as supernovae, pack twice the mass of our sun into a sphere just 20 kilometers in diameter. As a result, these objects have some truly wild properties.

If you were to dig into the heart of a neutron star, you’d see layers of complexity. As you delve deeper, things get denser and denser. Around halfway to the center, the density of the material becomes so great that the atomic nuclei become squished into a variety of shapes. Scientists believe they resemble pasta types, hence the nickname.

But what makes this stuff special?

According to research, these are likely the densest and hardest substances in the universe. In fact, one sugar cube of nuclear pasta would weigh as much as a mountain.

Theoretical physicists and astrophysicists have been trying to simulate nuclear pasta to better understand its properties. According to a 2018 study, nuclear pasta may be the strongest material in the universe. It’s not only incredibly dense but also has a shearing resistance tougher than steel’s.

This immense density results in intense gravitational fields, causing the pasta shapes to align themselves into an incredibly tight lattice structure. This structure could play a crucial role in various neutron star phenomena, including starquakes, glitches, and even gravitational waves.

Interestingly, nuclear pasta doesn’t exist naturally on Earth, and for a good reason – it’s way too dense and strong for our environment. But the fact that it exists in the universe opens up a whole new realm of physics.

Discovering the existence of nuclear pasta is also vital for understanding neutron stars better. These stars are not only fascinating in their own right but also play a crucial role in the life cycles of galaxies. Understanding more about neutron stars could, therefore, lead to insights about how galaxies, including our own Milky Way, evolve over time.

There’s still so much to learn about neutron stars. But one thing’s for sure – the universe is full of fantastic and surprising structures!

— WTF fun facts

Source: “What is nuclear pasta?” — BBC Sky at Night Magazine

WTF Fun Fact 13436 – Vertical Forests

Do you know about the urban jungles called vertical forests? These towers of lush greenery stretch skyward, a testament to man’s ingenuity and nature’s adaptability.

The original vertical forest – Bosco Verticale

Vertical forests stem from the inventive mind of Italian architect Stefano Boeri. His vision for a greener planet led to the creation of Bosco Verticale, a pair of residential towers in Milan. These living, breathing structures showcase over 900 trees, 5,000 shrubs, and 11,000 floral plants. The foliage acts as an urban lung, absorbing carbon dioxide and pumping out oxygen, offering a breath of fresh air in a bustling metropolis.

Vertical forests in Asia

Hot on Milan’s heels, Nanjing, China, unveiled its vertical forest concept in 2018. Nanjing Green Towers mirror their Italian counterparts, cocooning a hotel, office, museum, school, and a rooftop club in a verdant embrace. Greenery cloaks the buildings, forming a dynamic ecosystem that provides shade, reduces noise pollution, and creates a habitat for birds and insects.

Across the globe in Ho Chi Minh City, Vietnam, Vo Trong Nghia Architects has a vision. With the city’s greenspace dwindling, they proposed a series of condominiums swathed in bamboo-filled concrete planters. They’ve named it the “House for Trees,” with each building designed to accommodate a tree on its roof.

A burgeoning trend

But, vertical forests aren’t solely for the concrete giants of the world. Medium-sized cities have jumped on the bandwagon too, with Eindhoven, a quaint city in the Netherlands, unveiling its own verdant vision. Trudo Vertical Forest is an affordable housing project designed to provide low-income families with sustainable homes wrapped in the embrace of 125 mature trees and countless shrubs.

In Quito, Ecuador, the urban jungle takes a different form. The IQON is Latin America’s first vertical forest, with plans to feature over 300 tree species, some of which are in danger of extinction. It’s an ambitious project, and one that aims to reconcile the city with its biodiverse surroundings.

Finally, let’s take a trip to the desert. In the heart of Egypt’s New Administrative Capital, Stefano Boeri strikes again. He proposes a series of seven vertical forest buildings and three green residential complexes. The design aims to combat desertification while creating a bio-diverse urban ecosystem.

These are just a few examples of the burgeoning trend of vertical forests, a unique solution to urbanization’s challenges. As the world’s cities continue to expand, it’s this kind of innovative, nature-centric architecture that will help keep our urban environments breathable, sustainable, and beautiful.

— WTF fun facts

Source: “9 Vertical Forests Around the World That Look like Jungles in the City” — Interesting Engineering

WTF Fun Fact 13435 – Namibia’s Dead Vlei

Dead Vlei is a fascinating expanse of parched land that delivers a raw, unfiltered taste of nature’s ironies. Located in the Namib-Naukluft Park in Namibia, this peculiar terrain is quite a spectacle to behold.

What is Dead Vlei?

The name “Dead Vlei” evokes mystery, intrigue, and a tinge of the macabre. It means “dead marsh.” But there are no marshy wetlands here, only a bleak and barren desert forest.

Years ago, the scene was different. The Tsauchab River flowed through, nourishing life. Acacia trees rose from the marsh, drinking from the river’s bounty. The dunes blocked the river’s path about 700 years ago, and the life-source dried up. The trees could not survive, their lives snuffed out by the desert’s harsh reality.

A tree cemetery

Today, they stand as skeletal remains, eerily immortalized in the arid expanse. Scorched black by the sun, the 900-year-old trees defy decomposition. They’re trapped in time, providing a stark contrast against the bleached-white clay pan.

Towering over the land are immense sand dunes that stretch towards the sky. These are some of the tallest dunes in the world, reaching dizzying heights of over 300 meters.

Walking into Dead Vlei feels like entering a surreal painting. The arid, cracked earth underfoot, the blackened trees standing as silent sentinels, the rusty-red dunes in the backdrop – it’s a stark yet mesmerizing display of contrasts. It’s the living and the dead, color and monochrome, life’s vitality and death’s silence.

The place is remote, nestled within the expansive Namib Desert, one of the world’s oldest. To reach Dead Vlei, one must traverse the salt and clay pan of Sossusvlei, another stunning locale, renowned for its red dunes and vivid landscapes. The journey might be long, but the sight that awaits at the end is worth every step.

Dead Vlei has served as the backdrop for various film and television productions and drawn photographers from around the globe.

— WTF fun facts

Source: “Dead Vlei, Namib-Naukluft National Park, Sossusvlei, Namibia” — Atlas Obscura

WTF Fun Fact 13434 – Tanzania’s Lake Natron

Tanzania’s Lake Natron is not your average lake. Imagine a vast shimmering pink and red body of water so caustic that it burns your skin and eyes. It’s rumored to turn animals into stone (though that’s not quite true). I’s both beautiful and creepy.

Lake Natron’s eerie characteristics

Lake Natron, nestled in the Great Rift Valley, is a salt lake. It gets its name from natron, a naturally occurring mixture of sodium carbonate decahydrate and around 17% sodium bicarbonate. Add in some salt and mineral impurities, and you have a lake with a pH as high as 10.5. That’s incredibly alkaline.

With these numbers, you might think nothing could survive here. But you’d be wrong. Three species of fish, Alcolapia alcalica, Alcolapia latilabris, and Alcolapia ndalalani, call this caustic lake home. These hardy creatures adapted to Lake Natron’s harsh conditions and live quite happily in its waters.

The myth of Lake Natron

In stark contrast to its resident fishes, the lake has been accused of turning birds and other animals into statues. You heard that right – stone statues. But before you jump to a petrifying conclusion, let’s debunk that myth.

Photographer Nick Brandt published a series of hauntingly beautiful images of calcified animals along Lake Natron’s shores, triggering rumors that its water could turn creatures to stone. But the reality is less fantastical and more scientific.

The animals, likely dead before they touched Natron’s waters, were preserved by its alkalinity. Similar to how ancient Egyptians used natron to mummify bodies, the lake’s water can preserve and give a stony appearance to those unfortunate creatures that end up in its depths. But instant petrification? That’s a myth.

However, that doesn’t mean Lake Natron is all welcoming. With temperatures that can reach up to 60 degrees Celsius (140 degrees Fahrenheit), it’s inhospitable for many species. Touching the water could cause burns, especially to the eyes and skin of unadapted animals and humans. So while it’s not turning beings to stone, it’s not exactly a friendly dip.

Flamingo’s love it!

Yet, despite its harshness, Lake Natron is the chosen breeding ground for more than 2.5 million Lesser Flamingos. The lake’s extreme conditions keep the flamingos safe from predators, while the algae thriving in the salty water serve as a rich food source.

The juxtaposition between Lake Natron’s beauty and harshness is stark. For this reason, it it’s a magnet for both tourists and scientists alike. Its eeriness, the ghostly images of life arrested in time, is a fascinating aspect of its lure. But there’s more to this lake than meets the eye.

Lake Natron is an excellent reminder of how nature is full of surprises and adaptations. Its unique ecosystem underscores the balance between life and death, showcasing how even in the harshest conditions, life finds a way to not just survive, but thrive.

The truth about Lake Natron is far more interesting than myths.

— WTF fun facts

Source: “Lake Natron: Deadly to Most Life, but the Flamingos Love It” — Explorer’s Web

WTF Fun Fact 13433 – The Salt Cathedral of Zipaquirá

If you crave a journey into the depths of the Earth to experience nature’s wonder, head to the Salt Cathedral of Zipaquirá in Colombia. This marvel lies 200 meters (over 600 feet) underground in a former salt mine. And it’s an awe-inspiring symbol of spiritual devotion and architectural brilliance.

Visiting the Salt Cathedral of Zipaquirá

Picture this – you descend into the belly of the Earth. You’re greeted by a long, shadowy tunnel, illuminated by the soft glow of strategically placed lighting. Now, you’ve reached the start of the “Via Crucis”, the Stations of the Cross. Each one represented through imposing sculptures carved directly from the salt. These artworks in themselves offer a mesmerizing spectacle, adding gravitas to the sacred pilgrimage through the mine.

As you journey deeper, you’re led to an expansive cavern. Here, the salt rocks yield to the Cathedral’s majestic centerpiece – a massive cross stretching up toward the ceiling. This 16-meter-tall monolith of salt illuminated from behind. It casts a mystical aura, offering an awe-inspiring sight that leaves visitors marveling at the artistry and devotion it represents.

An active place of worship

The Cathedral is not just a sight to behold, but also a beacon of local culture. In fact, the salt mine has supported the people of Zipaquirá for centuries, its economic significance evolving into spiritual importance with the construction of the cathedral. Today, it continues to be a vibrant place of worship where faith resonates in every salt-strewn corner.

Further adding to its uniqueness, the Cathedral’s acoustics have also been leveraged for musical performances, its echoes amplifying the harmonious notes and making the music a truly immersive experience. Here, the hymns aren’t just heard but felt, resonating with the spirit of the cathedral.

Despite its spiritual significance, the Cathedral also caters to secular tourists. A light show illuminates the cathedral, and a guided tour offers insights into its geological and architectural aspects, emphasizing its universal appeal. It’s a journey of discovery, an exploration of human ingenuity in harnessing nature, and a celebration of the enduring power of faith.

— WTF fun facts

Source: “Colombia’s Salt Cathedral Is A Marvel Of Architecture And A Popular House Of Worship” — NPR