Science

WTF Fun Fact 13008 – Financial Stress Lowers IQ

Fun Fact: “A Harvard study found that our IQs can drop by 13 points when we are under financial stress. This is in part due to the amount of brain power we use to think about any financial burdens we carry, causing distraction.”
Are you surprised to hear that financial stress lowers IQ?

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According to Canada’s CBC News (cited below), “People struggling to pay their bills tend to temporarily lose the equivalent of 13 IQ points, scientists found when they gave intelligence tests to shoppers at a New Jersey mall and farmers in India. The idea is that the financial stress of trying to make ends meet monopolizes thinking, making other calculations slower and more difficult, sort of like the effects of going without sleep for a night.”

Financial stress and IQ

We know IQ tests aren’t reliable indicators of innate intelligence, but they can be used to measure changes in a person’s cognitive capacity under different conditions. In other words, we don’t have to compare a person’s scores to anyone else’s, we can compare their specific scores without making judgments about their overall intelligence.

CBC described the study:

“The scientists looked at the effects of finances on the brain both in the lab and in the field. In controlled lab-like conditions, they had about 400 shoppers at Quaker Bridge Mall in central New Jersey consider certain financial scenarios and tested their brain power. Then they looked at real life in the fields of India, where farmers only get paid once a year. Before the harvest, they take out loans and pawn goods. After they sell their harvest, they are flush with cash.

[Harvard researcher Sendhil] Mullainathan and colleagues tested the same 464 farmers before and after the harvest and their IQ scores improved by 25 per cent when their wallets fattened.”

What the study doesn’t mean

The study does not mean that rich people are smarter than people who are having temporary or long-term financial difficulties. It only means they have more cognitive resources to “spend.” They can think more clearly and concentrate better on other tasks since they’re not worried about money. — WTF fun facts

Source: “Financial stress can induce drop in IQ” — CBC News

WTF Fun Fact 13006 – Brain Cells Learn To Play Pong

Fun Fact: Lab-grown human and mouse brain cells living in a petri dish became sentient enough to learn to play the video game Pong.
That’s right – scientists found that brain cells learn to play Pong, the 1970s tennis-type video game.

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In news that we don’t find even remotely comforting, brain cells grown in a petri dish have been shown to become sentient enough to learn to play video games. And we’re not kidding when we say that their next plan is to get the brain cells drunk and see what happens.

Sentient brain cells living in a dish

To be clear, these are cells that are living in a petri dish – not a person. They are human cells derived from stem cells and mouse cells derived from embryonic cells. There are 800,000 cells in total involved in the experiment.

Not only have the cells learned to play the game Pong, but they keep improving. “They played longer rallies and were aced less often,” reported The Guardian (cited below). Of course, Pong is a very simple game, which is why the researchers chose it in the first place.

The study that revealed the experiment was just published in the journal Neuron.

The researchers hail from Cortical Labs, Monash University, the University of Melbourne, and University College London.

How can brain cells learn to play Pong?

According to The Guardian, the researchers out the cells on something called the “DishBrain,” “a multi-electrode array that can sense cell activity and stimulate the cells, then gave the cells feedback on whether the paddle was hitting the ball.”

Within five minutes the cells started to communicate using electrical activity to operate the game. It sounds like sci-fi, but it’s true.

“Now the researchers will see how the cells perform when they are drunk or given medicines. They hope to use the DishBrain to learn more about conditions such as epilepsy and dementia.”

“This is the new way to think about what a neuron is,” a researcher said. — WTF fun facts

Interested? See for yourself:

Source: “Scientists teach brain cells to play video game Pong” — The Guardian

WTF Fun Fact 13002 – Keeping Secrets

Fun Fact: Keeping secrets is a universal phenomenon. Researchers found that approximately 97% of people are keeping a secret at any given time, and the average person is currently keeping around 13 of them (though not all are because of shame or guilt).

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What aren’t you telling us? What are you hiding? Nothing? Ok. Then are you hiding big surprise from someone? Are you pregnant and not telling anyone? Are you buying us a pony for Christmas? No. Darn.

Well, chances are you’re holding onto at least one secret – and you’re more than likely keeping a whole bunch across a handful of different categories. Not all secrets are sinister, and some we’d probably rather people kept to themselves.

Secrets are interesting things, which is why psychologists study them.

The anatomy of a secret

The American Psychological Society (cited below) wrote about the work of some of their members, and it’s fascinating stuff.

First, you may be interested to know that sharing this private information and asking people to keep it from others is burdensome (so maybe you should keep some to yourself). Then again, researchers also found that sharing secrets is a great way to bond with people and show them you trust them.

Dr. Michael Slepian, associate professor of leadership and ethics at Columbia Business School, described his interest in the psychology of secrets:

“For decades, secrecy research focused on the effects of concealment. But I couldn’t find any studies that systematically looked at what secrets people keep, how they keep them or how they experience secrets on a day-to-day basis.” This led him to survey around a thousand people and try to categorize the types of secrets they keep.

Types of secrets

The first step was to define acts of secrecy, which they did broadly, “defining secrecy not just as the moment of actively withholding information, but also having the intention to keep something secret from another person—even when that other person isn’t physically present.”

After categorizing the types of secrets people keep (for example, things related to infidelity, illegal behavior, planned surprises, pregnancy, etc.), he and his colleagues discovered that the things people keep to themselves generally fell into about 38 common categories.

“We all keep the same kinds of secrets,” Slepian told the APA. “About 97% of people have a secret in at least one of those categories, and the average person is currently keeping secrets in 13 of those categories.”

The biggest harm of keeping a secret was a person’s tendency to ruminate on it, which happened far more often with negative secrets. Interestingly, people tend to dwell on things that make them feel ashamed – even more than they ruminate on secrets that make them feel guilty. That’s because shame makes you feel like a bad person and breeds feelings of helplessness or powerlessness.

Divulging secrets

Divulging these previously private things can be a double-edged sword, of course. But talking to people can reduce the shame. Slepian found that “thinking about a secret can create a motivational conflict in which a person’s need to connect with others directly clashes with their desire to keep their secret to themselves.”

After finding 38 categories of secrets among hundreds of people, Slepian’s team also found that “confiding a secret predicted improved well-being, both because the participant received social support and because the act of revealing the secret seemed to minimize the amount of time the person spent thinking about it.” — WTF fun facts

Source: “Exposing the hidden world of secrets” — American Psychological Association

WTF Fun Fact 12993 – Point Nemo

Point Nemo is a cemetery you can’t visit. It lies in the ocean’s “point of inaccessibility” because it lies over 1,600 miles from any land mass. In fact, it’s the furthest point from any land mass on Earth, which is a “fun fact” in itself. But our point is that Point Nemo is a special kind of burial ground – it’s a space cemetery under the sea.

Point Nemo the space cemetery

At the end of the journies to the farthest reaches of space, satellites, rockets, space stations, and the “junk” that comes down with them end up in this lonely spot deep in the Pacific Ocean.

It’s named not for Disney’s fishy character but for a more distinguished fictional Nemo – the submarine captain in Jules Verne’s classic 20,000 Leagues Under the Sea.

Someday, when it’s no longer a bastion of the latest space technology, it is where the International Space Station will be laid to rest.

The land of “space junk”

According to The Guardian (cited below): “When spacecraft die, they become a danger to everything else in orbit. Space debris is rapidly clogging up space, and at orbital speeds of up to 17,500km/h even tiny flecks of paint can cause serious damage to other spacecraft.”

According to science writer Jessica Baron the ISS itself is in danger from “space junk”, noting that “Even as far back as 2013, NASA reported that it was monitoring over 500,000 pieces of debris, 20,000 of which were larger than a softball. Because the “space junk” can travel at speeds of up to 17,500mph, even a small piece can pose a major collision risk for future missions and the ISS.”

This possibility is called the ‘Kessler Effect,” and The Guardian says “The Kessler Effect, or Kessler Syndrome, is the potential for the amount of debris in orbit to reach a critical mass where each collision creates more pieces of debris in a cascading way, to the point where the orbit is no longer usable.”

While some have considered building a giant space harpoon to catch this trash, most pieces are too small, so “To prevent such a disaster, anyone launching something into orbit these days has to have a plan to either send it into a graveyard orbit, or send it back down to burn up in Earth’s atmosphere,” NASA says.

And that’s where Point Nemo comes in. — WTF fun facts

Source: “Thousands of kilometres from anywhere lies Point Nemo, a watery grave where space stations go to die” — The Guardian

WTF Fun Fact 12990 – The Lake Erie Mirage Effect

No one’s eyesight is good enough to be able to see Canada from Ohio. But some people looking across Lake Erie insist that they can. It’s called the Lake Erie Mirage Effect.

What’s the Lake Erie Mirage Effect?

In Northeastern Ohio, there are days when people look out across Lake Erie and see the Canadian shoreline. However, that shoreline is over 50 miles away. It’s rare to see it, but the strange phenomenon has an explanation.

The curvature of the Earth prevents us from seeing objects that far into the distance. However, under the right conditions, the Lake Erie Mirage appears.

This is due to temperature inversion and super-refraction. Temperature inversion is a phenomenon in which temperature increases with height (normally it’s the other way around). This causes density changes in the air that make sunlight bend downward (that’s the super-refraction). As a results, the naked eye can see things far beyond the horizon.

What conditions are necessary to see the mirage?

First, the lake needs to be cooler than the air above it for the temperature inversion to occur. The cold lake makes the air right above it colder, but the farther you go up, the warmer the air is since it’s not being immediately cooled by the lake.

Warm air is less dense than cool air, so it creates a “cap” that flows over the cool air beneath it. When the sun comes out, the light rays bounce off that cap and bend down towards the surface.

This lets us see around the curvature of the Earth. But to get the Lake Erie Mirage Effect, you also need calm winds, so the mirage doesn’t get distorted.

It’s all pretty rare, but Canadians can see Clevelanders driving down the street when the conditions are right on their side too. — WTF fun facts

Source: “What weather conditions allow Northeast Ohioans to see the Canadian shoreline across Lake Erie?” — Cleveland.com

WTF Fun Fact 12986 – Healing A Broken Heart

All you need is love. Well, all you need is oxytocin, really. That’s the brain’s “love hormone.” When it’s released into our bloodstream by our hypothalamus, it helps us bond with others and feel happy. And it turns out it could also be the key to healing a broken heart.

And we mean the real kind of broken heart – this hormone may be able to help cardiac health after a heart attack, at least according to a study using zebrafish and human cells.

Studying how to heal a broken heart

 Frontiers in Cell and Developmental Biology published the study, which found that oxytocin also has the ability to “promote the regeneration of the heart after an attack.”

According to IFL Science (cited below): “During a heart attack, cardiomyocytes – highly specialized cells responsible for heart contractions – die off. This can be a problem as they cannot replenish themselves.”

However, it appears that a subset of cells in the outer layer of the heart can undergo reprogramming and become something calls Epicardium-derived Progenitor Cells (EpiPCs). The cool thing about EpiPCs is that they can eventually become different types of heart cells, including the ones that are killed off during a heart attack.

Unfortunately, these EpiPCs need some help since they can’t regenerate fully under normal conditions. That’s why researchers looked at zebrafish.

Zebrafish are able to regrow parts of their heart. Naturally, scientists wanted to see just how they managed to do it so efficiently in the hopes that they could spur this regeneration in humans.

The role of oxytocin

The experiments involved injuring the hearts of zebrafish (through freezing them). Researchers found that the genetic material that leads to oxytocin production showed a 20-fold increase in the brain. This triggered a biological process that ended in some cells turning into EpiPCs and migrating to the heart to develop into cardiomyocytes.

“Here we show that oxytocin, a neuropeptide also known as the love hormone, is capable of activating heart repair mechanisms in injured hearts in zebrafish and human cell cultures, opening the door to potential new therapies for heart regeneration in humans,” lead author Dr. Aitor Aguirre said in a news release.

Now, the question is whether we can make something similar happen in humans.

It turns out it may be possible. But we’ll have to find a way to activate the production of oxytocin in order to produce EpiPCs.  

“Oxytocin is widely used in the clinic for other reasons, so repurposing for patients after heart damage is not a long stretch of the imagination. Even if heart regeneration is only partial, the benefits for patients could be enormous,” Aguirre added.

Next steps towards healing a broken heart

Now, the team will need to look at oxytocin production in humans who have experienced cardiac injuries as well as drugs that can stimulate oxytocin production. But before working on humans, it’ll have to go through a pre-clinical trial stage.

“Next, we need to look at oxytocin in humans after cardiac injury. Oxytocin itself is short-lived in the circulation, so its effects in humans might be hindered by that. Drugs specifically designed with a longer half-life or more potency might be useful in this setting. Overall, pre-clinical trials in animals and clinical trials in humans are necessary to move forward,” Aguirre concluded. — WTF fun facts

Source: “Love Hormone” Oxytocin Could Help Mend A Broken Heart” — IFL Science

WTF Fun Fact 12978 – How Does Temperature Affect the Color of Leaves?

Have you noticed that autumn looks a bit different every year? Sometimes the leaves fall early. Other times they’re on the trees much longer to give a full display of color. A lot of this has to do with the temperature outside. But how does temperature affect the color of leaves?

The temperature of fall and its effect on leaves

As the nights get cooler in the northern hemisphere in September and October, we begin to see the trees change. If you’re lucky enough to live around a mixture of trees, you’ll begin to see bright red, orange, and yellow leaves appear.

Without as much daily sunlight, trees don’t go through as much photosynthesis. This is aprocess that produces sugars, which trees use as energy to grow and flower.

A reduction in photosynthesis leads to a reduction in chlorophyll as well, which is the pigment that makes leaves green. As they lose chlorophyll, they lose their green color and prepare to shed for the winter so trees can conserve their energy inside the branches and bark.

How does temperature affect the color of leaves?

But that still doesn’t explain the role of temperature.

The weather leading up to shorter days is actually quite important when it comes to determining how fall plays out for leaves .

We know that a reduction in chlorophyll leads to leaves being less green, but what makes some seasons produce more vibrant red leaves than others? Why does a tree turn bright orange one year and only a dull copper the next year?

Well, it turns out that the pigments that begin to show up once chlorophyll is reduced are dependent on both temperature and moisture conditions right before days start getting shorter. For example, some weather conditions make a leaf turn red early. It also helps it stay on the tree longer, so it goes through its full range of colors before falling off.

The role of weather in fall leaf displays

According to scientists at Michigan State (cited below), lots of warm days and cool nights narrow the veins in leaves. This helps trap the sugars made during photosynthesis in those leaves. When this happens, the sugars produce more vivid pigments.

“The most brilliant leaf displays follow a period of warm days filled with sunshine and cool nights. During this weather cycle, leaves produce an abundance of sugars during the sunny days. The cooler nights and gradual narrowing of leaf veins in the fall, means that a majority of the sugars produced are trapped in the leaf. An abundance of sugar and light in the leaf lead to the production of vivid anthocyanin pigments, which produce red, purple and crimson colors. Yellow and gold leaf colors are produced by carotenoid pigments, which are ever-present in the leaves and are therefore less dependent on the aforementioned conditions.”

Other factors in fall leaves

“Soil moisture also plays a role in the timing and brilliance of leaf color. The best displays are produced when the soil has been adequately moist throughout the year coupled with the aforementioned late summer weather. A late spring, or severe summer drought can delay the onset of color. A warm period during the fall can also decrease the intensity of fall colors by triggering early leaf drop before the colors have had a chance to develop.”

Finally, MSU explains that other factors can play a role in individual trees:

“Trees on the edge of low-lying areas, where cooler air collects at night, often display colors sooner than trees in an upland forested setting. Trees that are diseased or in decline may also display fall colors earlier than their healthy neighbors.“

And that’s why no two autumns will ever look the same. — WTF fun facts

Source: “How weather affects fall colors” — Michigan State University Extension

WTF Fun Fact 12976 – Rubber Bands Last Longer When Refrigerated

Rubber bands aren’t expensive, but they can be important to have around. And making sure you don’t use them recklessly could help keep rubber out of landfills. But did you know that there’s an easy way to prolong the life of your rubber bands? Rubber bands last longer when refrigerated.

Why do rubber bands last longer when refrigerated?

The rubber used to make rubber bands is unlike most other materials. In many cases, materials do better in warmer or room temperature environments places that don’t stress the bonds hold them together. But that’s not the case for rubber bands.

Cold temperatures make the polymers in the rubber more relaxed. This prevents them from degrading or forming the dry rot that causes them to break just when you need them most.

According to JFlex (cited below): “When a rubber band is stretched it causes its polymer chains to become very ordered and it expels thermal energy (heat), thus shortening its life. This is increased further when placed in higher temperature environments which increases the oxidisation rate. Also, the natural rubber that is used to make rubber bands crystallises over time, giving us what is commonly called ‘dry-rot’ – which is where the bands get dry, crumble and no longer have any elasticity.”

Be careful when removing rubber bands from the fridge

Now, if you do decide to refrigerate your rubber bands, make sure not to stretch them right away.

“When a rubber band is in its relaxed state it is very unordered, and will cool when going from a structured state to a relaxed state. So when a rubber band is put in the refrigerator it makes the polymers even more relaxed due to the way they behave in the cold.

Something to be careful of is immediately stretching the rubber band after being in the fridge, as this will cause it to weaken significantly because of the rapid change of temperature state.”

Who knew? — WTF fun facts

Source: “Why do rubber bands last longer when refrigerated?” — JFlex

WTF Fun Fact 12974 – The Sex Lives of Constipated Scorpions

The Ig Nobel Prizes have been awarded to 10 unusual (or unusually unuseful) scientific research projects each year since 1991. While it’s all in good fun, we couldn’t help but do a double-take this year at one of the winners – a team that published a study on the sex lives of constipated scorpions.

Constipated scorpions have it rough

Solimary García-Hernández and Glauco Machado of the University of São Paulo in Brazil won the 2022 Ig Nobel in biology for trying to discern whether being constipated affects a scorpion’s sex life. (To be fair, we can’t help but think being constipated is kind of a bummer for any creature.)

According to an Associated Press story on the prizes, “Scorpions can detach a body part to escape a predator — a process called autotomy. But when they lose their tails, they also lose the last portion of the digestive tract, which leads to constipation — and, eventually, death, they wrote in the journal Integrated Zoology.”

“The long-term decrease in the locomotor performance of autotomized males may impair mate searching,” they wrote.

Ok, maybe constipated humans don’t have it so bad after all.

Why even study this?

So, this particular study came about in an interesting way. The paper’s lead author Solimary García-Hernández had long been studying the scorpion species Ananteris balzani.

This species has an interesting characteristic – they shed their tails to help them escape a predator.

According to Smithsonian Magazine (cited below): “It was a big surprise in 2015 when she, while working as part of a larger research team, found that Ananteris scorpions are capable of shedding their tails. “Autotomy”—the process of dropping a body part to escape a predator—was until then known to have evolved in only a handful of animal lineages like starfish, spiders and certain lizards.”

Ok, so we totally understand wanting to look more closely into that interesting fact, especially since it turns out that when lizards shed their tails, it can impact their ability to walk but doesn’t kill them. However, scorpions are different.

When Ananteris scorpions shed their tails, their digestive tract backs up with feces, and they get swollen and die within around 8 months.

That’s weird since animals don’t typically adapt in a way that’s fatal to them unless it somehow helps their species. In this case, the extra months likely give them more time to reproduce. And that’s where studying their sex lives comes in.

The sex lives of constipated scorpions

García-Hernández decided to monitor the post-tail life of these scorpions to see how tail loss impacted their ability to reproduce.

“The team then set up a series of matings between stump-tailed and intact scorpions. García-Hernández predicted that autotomized male scorpions would be less successful at mating than their fully endowed counterparts, since the tail plays an important role in their complicated mating ritual.”

Male scorpions use their tails both to show off to mates and during intercourse, so not having a tail should make mating difficult. However, it turns out they just used their stump and were just fine.

It was a different story for females, however.

According to Smithsonian, “when the team explored the reproductive costs paid by stump-tailed females, the story was different. They found that tailless females, while able to mate successfully, went on to have 20 percent fewer offspring than intact females.

The reason for this difference? The five-month scorpion pregnancy provides a lot of time for females to get more and more constipated, says García-Hernández. She hypothesizes that the buildup of feces caused by the loss of the anus is either toxic to the embryos or that the feces simply crowds out the developing scorplings. This latter hypothesis is supported by the fact that a severely constipated scorpion can weigh 30 percent more than it did before it lost its tail. By comparison, that’s equivalent to a 150 pound person gaining 45 pounds of poop weight.” — WTF fun facts

Source: “For Constipated Scorpions, Females Suffer Reproductively. Males, Not So Much.” — Smithsonian Magazine