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Gen Xers and Boomers share things that used to be 'normal' but are 'boundary crossing' today

Birthday spankings, school paddlings and more.

woman smoking
Photo by lil artsy/Pexels

People used to just light up wherever and whenever they pleased.

How many times have you looked back to things you thought were "normal" from your childhood and thought "Huh, that was actually kinda weird in hindsight"? Times change, and what's considered "normal and acceptable" change with them. That's not automatically good or bad, necessarily, but hopefully humanity is evolving such that we learn from our mistakes and recognize room for improvement.

In that vein, someone asked Gen Xers and Boomers on Reddit, "What are some things that would be considered rude or boundary crossing today but were perfectly normal and acceptable when you were growing up?" and the answers reveal how much has shifted in the past handful of decades.

If you're over 40, enjoy this slightly disturbing trip down memory lane. If you're under 40, yes, all of these things really happened on a regular basis.

Scolding other people's kids (even strangers)

Raising a child was seen as more of a community effort than it is today, which resulted in perfect strangers doling out discipline.

"Scolding someone else's child. I remember getting corrected by strangers."


via GIPHY

"Those were the lessons that stuck the most too for me. When a family friend or stranger corrected me I knew without doubt I done f'd up. I didn't like the trend during the late 80's into 90's of everyone telling each other to mind their own business and not correct a child that wasn't theirs ~ horrible logic that I feel totally contributed to where we are at today with nobody considering other peoples opinions on things."

"OMG yes! in my neighborhood, whoever's house you were at, if you acted up, their mom was expected to let you know, and even send you home! it's just how things were."

"Kids were basically community property."

Showing up or dropping by unannounced

Before cell phones, people didn't always call or text before going to someone's house. Company could just show up at any time. People had snacks on hand specifically for unexpected guests. It was a thing.

"Possibly stopping in at a friend’s house unannounced. That used to be fairly common when everyone didn’t have a phone in his or her pocket."

"You never knew who, or how many, would show up at our house on a Friday night for a game of penny ante poker or Yahtzee in the 60's and 70's."

"I do miss that. We always had extra snacks for guests available because we never knew when someone might just show up."


via GIPHY

"We always had a Pepperidge Farms Coconut cake in the freezer. My mother would take it out to thaw as soon as company showed up."

"A corollary of this was that you were also expected to have your clothes on and be somewhat presentable while you were at home, since you never know who would be dropping by."

"Hell, me and my friends would just walk into each other's house like we lived there. None of the parents seemed to mind either. I often ended up eating meals at their homes and them at mine."

Birthday spankings

Okay, yeah, this one is weird. It was a tradition to get a spanking for every year of your life on your birthday, and it wasn't even just parents who did this. Teachers, your parents' friends, etc.

"All my parents' friends used to give me a spanking for each year on my birthday. Does anyone else remember this? Birthday spankings? So weird."

"And a pinch to grow an inch."

"My 4th grade teacher did this to all of us in front of the whole class. She ended it with a "pinch to grow on" and literally pinched our butts. This was around 2001 in Indianapolis. I don't recall anyone ever having an issue with it at the time, but looking back it was definitely odd. She was a great teacher and I have nothing bad to say about her at all. It was just a different time."

via GIPHY

"Yessssss! I'm in MD and was in elementary school in the 80's. If it was our birthday we would pick another kid to spank us in front of the whole grade, so if turning 9 you would get 9 smacks on your butt and all the kids would shout "ONE! TWO!..." 😂😂😂😂 I can't imagine that happening now!"

"Oh god! In a school club we would all line up and the birthday girl to crawl between all our legs as we spanked her on birthdays. What a crazy tradition!"

"The spanking machine! Kids would line up in a row, legs open, and you would crawl through, while kids slapped your butt. Sometimes singing 'today is spankin’ day!'"

Actual spankings. With a paddle. At school.

School principals, vice principals and sometimes teachers kept a paddle at their desk, which would be used to whack kids who misbehaved. Corporal punishment was the gold standard for behavior modification. Hacking, whacking, paddling—so any names for this woefully outdated practice.

"The big paddle that one of the teachers would possess that would be used on your hind quarters at their whim. No parent permission needed."

"The (completely backward) school I attended in 7th grade in 1999-2000 still spanked kids. My math teacher spanked a kid in class at least once a week. This was the deep south and very different from other schools I went to, it was quite the culture shock."

via GIPHY

"I would get the paddle or else my desk kicked over while I was in it, my head would hit that floor HARD! I don’t know which was worse."

"In 1987 my mom walked me into the school office and told everyone including the principle that under NO circumstances is anyone to paddle or spank me for discipline and if I misbehaved they were to simply call her about it. Their jaws dropped. That would not have happened anyways because I was a very well behaved and respectful child."

"I definitely got the big paddle in the vice principal's office."

Smoking indoors everywhere

It's impossible to explain to young people today how ubiquitous smoking used to be. Like, it was considered rude not to have ashtrays in your home. High schools had smoking areas. Restaurants, airplanes, waiting rooms—people smoked everywhere.

"I can recall the nurses at the triage in the hospital in my home town, smoking away while working. The 80s man, crazy time."

"I was born in 82, there’s a picture of my mother holding me shortly after I was born, laying in a hospital bed, and on her bedside table is a pack of reds and an ashtray."

via GIPHY

"And on airplanes and trains. I remember riding the L in Chicago with people smoking on the cars."

"Smoking in class at college."

"Smoking in grocery stores and putting out butts on the floor.

Teachers with ash trays on their desks smoking during class."

"My parents didn't smoke, but they (1970s) kept a guest ashtray in the house in case a visitor wanted to light up. Complained endlessly about the smoke smell once the person was gone, but it would have been rude to tell them to take it outside or wait."

Sexual harassment

Not that this was ever normal or acceptable, but it was tolerated to a disturbing level.

"Until Anita Hill, I had never even heard the term Sexual Harassment. I literally had no idea it was a thing. You were female, you were employed, men could make insistent advances with zero repercussions. One of my co-workers finally slept with the boss just to try to get him to leave her alone. This was NORMAL. We expected it to happen and accepted that it would, we just had to deal with it."

via GIPHY

"I was told to lighten up because it was a compliment."

" I got my first job in 1973 when I was 15. I worked in the restaurant business and waited tables all through college. It was pervasive and customers (men) would say many unwanted things as well. My first adult job was selling pharmaceuticals in 1984 and the first thing my regional manager told me during orientation was if a doctor did or said anything inappropriate handle it anyway you saw fit and then call and tell me about. He made it clear we didn’t have to put up with any BS and were free to slap anyone if we needed to. By the nineties sexual harassment wasn’t gone but was getting called out in a big way. Until there was a name for sexual harassment we knew we were uncomfortable but didn’t really have a way to express it in a meaningful and united manner."

"My friends and I were grabbed constantly in middle school by boys in early 90s. It never occurred to us to tell anyone and I honestly don’t think they would have cared. We just shared our shame amongst ourselves."

"Men would randomly grab and touch women all the time when I was growing up. Boomers were the worst about it, but I’m GenX and even we had it somewhat normalized. We’d gotten a clue that it wasn’t great, but we hadn’t yet realized it was actually sexual assault when someone would fondle your butt or breasts unbidden. Or when someone would grab you and kiss you. If you complained you were told to lighten up."

The drastic policing of what women wore under their clothes

Imagine having all the girls line up in gym class while the teacher runs his finger down each girl's back to make sure she was wearing a bra. Imagine it being unheard of to not wear pantyhose and show bare skin on your legs while wearing a skirt. We still police what women and girls wear in some places, but it's not as bad as it used to be.

"I’ve been told that women were expected to wear 'foundation garments' at work, and if they didn’t, then they might get reprimanded. I’m talking about longline bras and girdles."

via GIPHY

"In the 80s, one of my friends got sent to the office for not wearing a bra to high school."

"Until 1999, I was required to wear pantyhose at work. Nuts! And they dictated 'suntan' color!"

"Not sure what I spent more $ on - pantyhose or clear nail polish to stop the runs."

"I remember being a kid in the 90s my mom going from store to store looking for slips to put under my dresses, she had a whole section of her closet devoted to them. I hated them and didn't understand their purpose. Still don't. I'm so glad those are in the past."

People shared other things as well, such as how common it was to touch total strangers or to cut through people's yards to get to where you were going, and it's a wild ride through shifting social norms. Some things are definitely best left in the past, but some lend themselves to a stronger sense of community and might be worth revisiting. It does make you wonder what things from today will show up on a list like this decades from now.

You can see more on the r/AskOldPeople thread here.

This article originally appeared last year.

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Woman featured in iconic Great Depression photo didn't know she was famous until 40 years later

Florence Owens Thompson later revealed she wished her photo had never been taken.

the great depression; Florence Thompson; Mona Lisa of the Great Depression; Mona Lisa; the depression; depression era
Photo by Dorothea Lange via Library of Congress
The woman from the famous Great Depression photo didn't know about her fame for 40 years.

It's one of the most iconic and haunting photos of all time, up there with the likes of Hindenburg, The Falling Soldier, Burning Monk, Napalm Girl, and many others. It's called simply Migrant Mother, and it paints a better picture of the time in which it was taken than any book or interview possibly could.

Nearly everyone across the globe knows Florence Owens Thompson's face from newspapers, magazines, and history books. The young, destitute mother was the face of The Great Depression, her worried, suntanned face looking absolutely defeated as several of her children took comfort by resting on her thin frame. Thompson put a human face and emotion behind the very real struggle of the era, but she wasn't even aware of her role in helping to bring awareness to the effects of the Great Depression on families.

It turns out that Dorothea Lange, the photographer responsible for capturing the worry-stricken mother in the now-famous photo, told Thompson that the photos wouldn't be published.

Of course, they subsequently were published in the San Francisco News. At the time the photo was taken, Thompson was supposedly only taking respite at the migrant campsite with her seven children after the family car broke down near the campsite. The photo was taken in March 1936 in Nipomo, California when Lange was concluding a month's long photography excursion documenting migrant farm labor.

the great depression; Florence Thompson; Mona Lisa of the Great Depression; Mona Lisa; the depression; depression era Worried mother and children during the Great Depression era. Photo by Dorthea Lange via Library of Congress

"Migrant worker" was a term that meant something quite different than it does today. It was primarily used in the 30s to describe poverty-stricken Americans who moved from town to town harvesting the crops for farmers.

The pay was abysmal and not enough to sustain a family, but harvesting was what Thompson knew as she was born and raised in "Indian Territory," (now Oklahoma) on a farm. Her father was Choctaw and her mother was white. After the death of her husband, Thompson supported her children the best way she knew how: working long hours in the field.

"I'd hit that cotton field before daylight and stay out there until it got so dark I couldn't see," Thompson told NBC in 1979 a few years before her death.

the great depression; Florence Thompson; Mona Lisa of the Great Depression; Mona Lisa; the depression; depression era A mother reflects with her children during the Great Depression. Photo by Dorthea Lange via Library of Congress

When talking about meeting Thompson, Lange wrote in her article titled "The Assignment I'll Never Forget: Migrant Mother," which appeared in Popular Photography, Feb. 1960, "I saw and approached the hungry and desperate mother, as if drawn by a magnet. I do not remember how I explained my presence or my camera to her, but I do remember she asked me no questions. I made five exposures, working closer and closer from the same direction. I did not ask her name or her history. She told me her age, that she was thirty-two. She said that they had been living on frozen vegetables from the surrounding fields, and birds that the children killed."

Lange goes on to surmise that Thompson cooperated because on some level she knew the photos would help, though from Thompson's account she had no idea the photos would make it to print. Without her knowledge, Thompson became known as "The Dustbowl Mona Lisa," which didn't translate into money in the poor family's pocket.

In fact, according to a history buff who goes by @baewatch86 on TikTok, Thompson didn't find out she was famous until 40 years later after a journalist tracked her down in 1978 to ask how she felt about being a famous face of the depression.

@baewatch86

Florence Thompson, American Motherhood. #fyppppppppppppppppppppppp #historytok #americanhistory #migrantmother #thegreatdepression #dorthealange #womenshistory

It turns out Thompson wished her photo had never been taken since she never received any funds for her likeness being used. Baewatch explains, "because Dorothea Lange's work was funded by the federal government this photo was considered public domain and therefore Mrs. Florence and her family are not entitled to the royalties."

While the photo didn't provide direct financial compensation for Thompson, the "virality" of it helped to feed migrant farm workers. "When these photos were published, it immediately caught people's attention. The federal government sent food and other resources to those migrant camps to help the people that were there that were starving, they needed resources and this is the catalyst. This photo was the catalyst to the government intercepting and providing aid to people," Baewatch shares.

- YouTube www.youtube.com

As for Lange, Migrant Mother was not her only influential photograph of the Great Depression. She captured many moving images of farmers who had been devastated by the Dust Bowl and were forced into a migrant lifestyle.

"Broke, baby sick, and car trouble!" is just one of her many incredible photos from the same year, 1937.

She also did tremendous work covering Japanese internment in the 1940s, and was eventually inducted into the International Photography Hall of Fame and Museum and the National Women's Hall of Fame.

the great depression; Florence Thompson; Mona Lisa of the Great Depression; Mona Lisa; the depression; depression era Families on the move suffered enormous hardships during The Great Depression.Photo by Dorthea Lange via Library of Congress

Thompson did find some semblance of financial comfort later in life when she married a man named George Thompson, who would be her third husband. In total, she had 10 children. When Thompson's health declined with age, people rallied around to help pay her medical bills citing the importance of the 1936 photo in their own lives. The "Migrant Mother" passed away in 1983, just over a week after her 80th birthday. She was buried in California.

"Florence Leona Thompson, Migrant Mother. A legend of the strength of American motherhood," her gravestone reads.

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Communication expert shares 3 simple 'power moves' to not take criticism personally

“If I hear something that’s offensive, I’ll be like ‘okay, that’s trash.’ In my mind, I grab it with my right hand…and throw it.”

jefferson fisher, conversation, conversation tips, communications expert, podcast, jefferson fisher podcast, winning an argument
Photo credit: Canva

Standing your ground in a peaceful way is possible.

Even the most skilled small talkers among us might struggle when receiving negative feedback that feels like a personal attack. The temptation to fight back or stonewall is understandably strong. Our darker emotions become ignited, which sets off rejection stories in our mind before any clear thinking can take place.

The result: we dish out the same energy we’re given. Or, we shut down completely. Either way, we don’t get a lot accomplished.

But personal injury attorney and communications expert Jefferson Fisher, who shares all kinds of simple conversation tips, argues that keeping your cool in these heated moments all comes down to three “power moves.”

During a clip of his Jefferson Fisher podcast, the conversation guru first offered up a handy visualization: during moments of facing criticism, he imagines a giant trash can next to him, which collects all the negative feedback. He then “sifts” through the words, separating any snark as “trash” to get to what’s actually worth responding to.

“If I hear something that’s offensive, I’ll be like ‘okay, that’s trash.’ In my mind, I grab it with my right hand…and throw it.”

Dumping Trash Daniel Labelle GIFfrom Dumping Trash GIFs

That concept alone might be enough to avoid getting your feathers ruffled in many sticky situations. But below are the three easy strategies that can go a little further when someone is being offensive.

Power Move #1: Silence

Not saying anything after getting a snarky comment gives the other person the chance to take in their word choice, which Fisher argues often prompts them to apologize on their own.

“You’ve just exposed instead of covering it up…If you just let that silence sit there, oftentimes they go ‘sorry I shouldn’t have said that.’”

Power Move Strong GIFfrom Power Move GIFs

Power Move # 2: Acknowledge that the feedback could be true, rather than that it is

In these instances, Fisher encourages saying “Maybe you’re right,” which embraces humility without being a doormat.

Power Move #3: Holding off on the timing

In other words, this means not responding when you are angry and triggered.

To initiate a later time, Fisher suggests saying something like, “Let’s have this out…I don’t really have my thoughts together on that. Why don’t we talk about that at noon tomorrow?”

- YouTube www.youtube.com

Fisher added the caveat that context about who this person is in your life will determine which of these steps you might take. Overall, the main goal stays the same: asserting your value while steering the conversation towards what’s actually productive to discuss. No fighting back required.

You can find more cool tips just like this one on Fisher’s YouTube, Instagram, and TikTok.

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In an iconic 1975 clip, a teenage Michael Jackson stuns Cher during hypnotic robot dance duet

The clip marks a turning point in Michael Jackson's iconic public persona.

jacksons, michael jackson, robot dance, Cher, 1970s TV
via Cher/YouTube

Cher and The Jackson 5 doing the robot dance.

One of the most distinctive aspects of Michael Jackson's mega-stardom was that he grew up almost entirely in the public eye. He began performing with his brothers at age five and remained a significant figure in American pop culture until he died in 2009.

He burst onto the scene as a child with an incredibly soulful voice. He became an electrifying performer as a teen before rocketing to superstardom at 20 with the release of his first solo album, 1979's Off the Wall. One of the pivotal moments when the public witnessed this transformation came in 1975, when 16-year-old Michael performed with his brothers, The Jackson 5, on The Cher Show.

The Jackson 5 and Cher performed a medley of the band's biggest hits, including "I Want You Back," "I'll Be There," and "Never Can Say Goodbye." But the most memorable moment came when Michael and his brothers broke into the robot dance during "Dancing Machine," and Cher did her best to keep up.

The Jackson 5 and Cher do the robot dance

It's fun watching Cher try to fall in line with the Jacksons, while Michael absolutely kills it, gyrating like an animatronic on hyperdrive during his solo.

- YouTube www.youtube.com

The Jackson 5 may have helped bring the robot dance into the public consciousness by incorporating it into performances of their 1973 hit "Dancing Machine." But it traces back to mechanical "mannequin" dances from the early days of film. In the 1960s, Robin Shields, a popular mime, performed as a robot on late-night talk shows. By the 1970s, dancers had set those moves to music on shows such as Soul Train.

- YouTube www.youtube.com

In a 2003 interview, Cher said she had to learn the moves on the fly from the Jacksons.

"Think of how hard it was for me to learn to do that, and the guys just knew how to do it. I've been working all day, and they just came on and said, 'Okay, sure, this is how you do it,'" Cher recalled. "I had a lot of fun on that show. It was a lot of work, but I had a lot of fun. You know, and I got to work with some great people."

What's also notable about the performance is that Michael's voice had changed, and he sang in a deeper register than he had as a child a few years earlier.

Things changed for Cher and the Jacksons in 1976

By the following year, things had changed for both The Jackson 5 and Cher. Cher reunited with her ex-husband, Sonny Bono, for The Sonny and Cher Show, which ran until 1977. In 1976, The Jackson 5 left Motown Records for Epic Records and changed their name to The Jacksons. Jermaine Jackson temporarily left the group to pursue a solo career, and he was replaced by his brother, Randy.

Here's The Jackson 5's complete performance on The Cher Show from March 16, 1975:

- YouTube www.youtube.com

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The two ways people who may not be naturally funny can show they have a great sense of humor

A great sense of humor is one of the most likable traits a person can have.

man luaghing, woman laughing, laughing on date, wine, happy couple
via Canva/Photos

A man and woman laughing on a date.

A sense of humor is often ranked among the most desirable traits in a romantic partner, with women rating it higher than men. Studies show that, in heterosexual relationships, the more times a man tries to be funny and the more a woman laughs, the greater the chance that the woman is interested. If a couple laughs together, the greater the chance of true love.

Why is a sense of humor so attractive? It makes people more enjoyable to be around, helps people bond, and makes awkward or even painful moments more bearable. On a deeper level, humor is a great way to determine whether someone is a creative thinker with a novel approach to solving problems.

But what about people who aren't comfortable cracking jokes and don’t have their brains constantly tuned to the “be witty” channel? Vanessa Van Edwards, a communications expert and author of Captivate: The Science of Succeeding with People, says there are two ways to show they still have a great sense of humor.

@vvanedwards

Is Humor More Attractive Than Looks? | @The Diary Of A CEO

Van Edwards shared her thoughts on an episode of the Diary of a CEO podcast. During the podcast, she noted that there are two roles people can play in a conversation: a driver and a passenger. The driver is the person steering the conversation, while the passenger is along for the ride.

How do people who aren’t great at cracking jokes show they have a sense of humor?

1. Be a great laugher

"So, you are going to be the best passenger ever. You're going to laugh at the joke. You're going to bang on the table. I love table bangers. You know, I have people in my life who are not very funny, but they love to bang on the table when I tell a funny joke, and that makes me feel so good. They don't need to be funny. I'm happy to try. Right? So, if you're not funny, just be very good at hyping up other funny people."


2. Be a great curator of humor

"You also could be a curator of funny. You find the best funny gifts. You find the best funny clips. You share the best funny posts. Like, you don't have to be funny to be a curator of funny. Like, I have a friend who's not that funny, but he has the best clips and memes that he sends me. And so I think of him as funny even though he's never told a joke."

Watch the entire segment here.

- YouTube www.youtube.com

Van Edwards added that if people genuinely want to improve their sense of humor, they can take an improv class to learn how to be funny in the moment. “A lot of humor is just trying things and seeing if they land. So if you're not funny and you want to be and like something good to work on, take an improv class and work on being funny on stage.”

Van Edwards' advice is excellent for those who thought they would never be seen as funny. Her words are a great reminder that even though many great communicators seem to have talent that comes naturally, it's a skill set, and like anything else, there are always ways to learn and improve.

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Fascinating 'Dark-fly' experiment has finally allowed scientists to measure evolution in real time

The long-running experiment has tracked changes in over 1,500 generations of fruit flies since 1954.

science, scientists, evolution, adaptation, mutation, genes, DNA, fruit flies, humans, health, futurology
By André Karwath/Wikimedia Commons & Photo credit: Canva

An experiment running since 1954 has taught scientists valuable information about how evolution really works.

Evolution usually occurs so slowly that it's imperceptible to the naked eye. Simple adaptations can take thousands of years to take hold, far too long for any of us to notice. But just because it's slow doesn't mean it's not happening. Humans, for example, aren't growing wings or gills (as far as any of us can tell), but we are evolving "faster than ever before," mostly in subtle ways such as food tolerance, disease resistance, and brain size.

One fascinating project that was started decades ago has allowed scientists to track and measure evolutionary changes in real time by speed-running evolutionary adaption in a heavily controlled lab setting.

In 1954, Japanese ecologist Syuiti Mori launched what would become one of the longest-running active experiments in the world. He enclosed a colony of fruit flies in glass bottles, covered them with cloth, and placed them in complete darkness.

They would remain there for the next 72 years and counting.


science, scientists, evolution, adaptation, mutation, genes, DNA, fruit flies, humans, health, futurology Dark flies and wild fruit flies look almost identical, but have significant genetic differences. Photo by Luke Peterson on Unsplash

Fruit flies are often used in this type of research because they reproduce incredibly quickly. Eggs typically hatch into maggots within a day or two. Within two weeks, they mature into sexually active adults that begin mating and laying eggs. New generations can cycle rapidly, which makes fruit flies the perfect candidate for tracking genetic changes over time.

Perhaps more surprisingly, fruit flies actually share quite a bit of DNA with humans. Researcher Stephanie Mohr tells Harvard Health that fruit fly genes are about 60% similar to human genes, with even greater overlap in disease-related markers. That makes them a surprisingly effective model for studying human genetics at a simplified level.

Mori's flies bred in complete darkness, rapidly producing generations that had never seen the light of day. Today, the experiment continues under successive generations of leading researchers, during which the colony has produced more than 1,500 generations.

Researchers access, feed, and study the flies using a weak red light that the flies cannot detect. For decades, they've been able to perfectly control the conditions from generation to generation. The Genetics Society of America writes: "The stock of flies has now spent more than 1,500 generations without light. In human terms, that would be like sequestering generations of our ancestors in the dark for 30,000 years."

Adaptation is slow, but that is more than enough time to measure changes, if any occur.


science, scientists, evolution, adaptation, mutation, genes, DNA, fruit flies, humans, health, futurology The project has been passed down from researcher to researcher for 70 years. Photo by CDC on Unsplash

The research team quickly discovered that after several generations, the new variety they had created, fittingly called "Dark-fly," performed better in darkness than wild flies.

The two subspecies look nearly identical, but the Dark-fly has longer head bristles used for sensory perception, a stronger sense of smell, and a tendency to lay more eggs in dark conditions.

Researchers even created mixed colonies of wild flies and dark flies, allowing them to interbreed in darkness, and found that Dark-fly DNA was more likely to be passed on to future generations.

In 2012, the full genome of the Dark-fly was sequenced by Naoyuki Fuse, who had taken over the project a few years earlier.

According to Bioedonline.org, "Fuse and his colleagues sequenced the dark-fly genome, identifying 220,000 single-letter differences in its DNA and several thousand larger DNA insertions or deletions, compared with a normal fruit-fly strain."

The team was able to pinpoint which genes changed over time and how, offering rare insight into how evolution works.

Scientists are quick to note that living in darkness does not directly cause changes in the flies' DNA. Instead, natural selection favors mutations and traits that help the flies thrive, making them more likely to be passed on to future generations. Some differences may simply be due to random chance, or genetic drift.


- YouTube www.youtube.com

Adaptations in extreme environments have been observed before. Some insects, including bedbugs, are becoming resistant to pesticides. The Mexican tetra, also known as the blind cave fish, has lost functional eyesight after generations of living in pitch-black caves. And a number of animals have adapted to rapidly warming climates.

But recording and measuring these changes in a controlled laboratory environment is extremely rare. Outside the Dark-fly experiment, other long-running studies have tracked colonies of E. coli and yeast under various conditions. But there's something incredibly exciting about observing a living, breathing species as it rapidly adapts to thrive in unnatural conditions.

One day, studies like this one could help scientists rewire human brains and genetics to protect against disease, among other amazing applications.

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