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It's not just keeping you up. Light pollution is doing real damage. It's time to act.

When an earthquake hit the San Fernando Valley in 1994, the power went out all over Los Angeles.

The quake struck just before dawn. And suddenly, phones started ringing at the local Griffith Observatory. People were worried because they thought the night sky looked strange.

Turns out, due to the power outage, these frightened Angelenos were simply seeing the stars for the first time!

"The stars were in fact so unfamiliar, they called us wondering what happened," observatory Director Ed Krupp told the Los Angeles Times.

Sadly, because of light pollution, residents of Los Angeles aren't alone in their shock over the real night sky anymore.

A U.S. Marines armored vehicle during a night operation in Afghanistan. Photo by Dmitry Kostyukov/AFP/Getty Images.

Light pollution is the brightening of the night sky by man-made sources.

It's everything from street lights to outdoor lights on homes. And since the incandescent bulb was introduced more than 100 years ago, it's been getting increasingly difficult to see the night sky.

Earth's city lights. Image by Craig Mayhew and Robert Simmon, NASA GSFC.

As I was working on this story, I thought about the last time I could clearly see the stars. I remembered seeing the Big Dipper from the backyard of my childhood home, but that was years ago. And I couldn't remember anything since.

Had it really been so long since I'd seen a clear view of the night sky? It's actually pretty likely.

It's estimated that nearly one-third of the human population, including 80% of Americans, can no longer see the Milky Way. That's our home galaxy, whose spiral band of white stars resembles spilled milk.

The Lyrid meteor shower and the Milky Way in the clear night sky of Thanlyin, Myanmar. Photo by Ye Aung Thu/AFP/Getty Images.

Why is this starry absence so important to consider?

I wanted to see what I was missing, so I went to my local observatory, the Haggart Observatory at Clackamas Community College. Once a month, volunteers open the observatory's large telescope and observation decks to the public.

When it was my turn, my group walked up the steep stairs to the first observation deck, then through a door in the floor to the top of the observatory.

It was pitch black. I couldn't see my own hands, let alone anyone else in my group. We took turns stepping up to the eyepiece on the large telescope. It was one "Wow," after another, as we each had a chance to see Saturn and her beautiful rings.

All at once, I understood why the sudden spray of stars likely alarmed the people of Southern California. It's beautiful. It's breathtaking. And there's simply nothing else like it.

The Milky Way towers over U.S. Marines near their compound in Afghanistan. Photo by Dmitry Kostyukov/AFP/Getty Images.

When we can't see the stars, we don't just miss out on awe-inspiring natural beauty.

We also miss out on a fascinating, almost spiritual part of the human experience.

"To me, I think we're robbing ourselves of our human soul that we've had for eons," said Dawn Nilson, volunteer Dark Sky Preservation director for Portland's Rose City Astronomers. "If you look at all the artwork going back thousands of years ... there's a relationship with the sky, with the stars, and our whole body's built on it. I mean, where would Van Gogh have painted a starry night if he didn't see a starry night?"

"The Starry Night" by Vincent Van Gogh. Image via Wikimedia Commons.

Just like other types of pollution, light pollution is something we should work to reduce.

"Being able to see the Milky Way, to see the stars, is incredibly important. But people don't see that as important as say, pollution in a river that's killing fish," said Cheryl Ann Bishop, communications and public affairs director for the International Dark-Sky Association.

Like trash in the water and smog in the air, light pollution is taking a serious toll on many species of wildlife.

Male tree frogs croak at night as part of their mating behavior, but the glare from artificial lights is disrupting this breeding ritual and interfering with reproduction, which may lead to a drop in population. Many amphibians hunt after dusk, but they may stay hidden if their area is well-lit, adversely affecting the amount of food they can eat.


A tree frog sits on a branch in Maryland. Photo by Mark Wilson/Getty Images.

Birds are also adversely affected.

Mary Coolidge, BirdSafe campaign coordinator for the Audubon Society of Portland, Oregon, told me that most songbirds travel at night. It cuts down on turbulence, they can avoid predators, and they can use the moon and stars to navigate. But light pollution is starting to inhibit their migration patterns.

Cranes fly at dawn. Photo by Francois Nascimbeni/AFP/Getty Images.

"When they come to areas where there's quite a bit of sky glow because of unshielded lighting in the city, that really drowns out those cues for them," Coolidge said. And since many of the birds are attracted to light, streetlights and illuminated skyscrapers can be especially dangerous.

"There are stories of birds that ... end up getting entrapped by light and circling a building, and circling, and circling, until they collapse from exhaustion."

Birds fly past floodlights at the Punjab Cricket Association stadium in Chandigarh, India. Photo by Manan Vatsyayana/AFP/Getty Images.

It's not just animals, either — our obsession with bright lights is also affecting human health.

Cities across the nation are replacing existing streetlights with LEDs, which are more energy-efficient and last longer. But LEDs have a high color temperature (around 4,000 to 5,000 Kelvin) and a high level of short-wavelength blue light. This can cause intense discomfort and severe glare and can actually be dangerous to walk or drive in at night.

The bright lights can also suppress melatonin, the hormone that controls our internal sleep-wake cycle. This can cause excessive sleepiness and impaired daytime function.

The moon behind a newly installed LED streetlight in Las Vegas. Photo by Ethan Miller/Getty Images.

While the problem of light pollution is big and far-reaching, the fix is relatively simple.

To cut down our own contributions to light pollution and skyglow, we can each do a home audit of outdoor lighting.

"That's the first thing people can do is look around their homes to make sure their lights are dark-sky friendly," Bishop said. "One of the most important things is to make sure [lights] are fully shielded because a lot of lighting and a lot of security lighting ... it's not going down on the ground, where it's actually needed; it's going up in the sky, which serves no purpose and just wastes energy."

Image via International Dark-Sky Association.

The International Dark-Sky Association estimates that 30% of outdoor lighting in the U.S. is wasted, going up into the sky instead of down on the ground, resulting in $3.3 billion in unnecessary energy expenditures and 21 million tons of carbon dioxide a year.

Why aren't people doing this already? "The hardest part is that most people don't know what they're missing, so it's not an issue to care about," Nilson said.

This long-exposure photograph shows the Milky Way in the clear night sky at Ngwe Saung beach in Myanmar. Photo by Ye Aung Thu/AFP/Getty Images.

Whether we're doing it for wildlife, our health, future generations, or everyday inspiration, the night sky is something worth fighting for.

Do yourself a favor this summer and find a place to stare at the night sky. I bet you'll be pleasantly surprised by the beauty you see.

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Science

Her groundbreaking theory on the origin of life was rejected 15 times. Then biology proved her right.

Lynn Margulis had the audacity to challenge Darwin. And we're lucky she did.

lynn margulis, lynn margulis symbiosis, biology, scientific breakthroughs, darwin, darwinism, women in science
Facts That Will Blow Your Mind/Facebook

A photo of Lynn Margulis.

Throughout her prolific and distinguished career, biologist Lynn Margulis made several groundbreaking contributions to science that we take for granted as common knowledge today. For example, she championed James E. Lovelock’s “Gaia concept,” which posited that the Earth self-regulates to maintain conditions for life.

But by far, her most notable theory was symbiogenesis. While it was first written off as “strange” and “aesthetically pleasing” but “not compelling,” it would ultimately prevail, and completely rewrite how we viewed the origin of life itself.

In the late 1960s, Margulis wrote a paper titled "On the Origin of Mitosing Cells," that was quite avant-garde. In it, she proposed a theory: that life evolved through organisms merging together to become inseparable.

In essence, cooperation is the driver of life, not competition and domination. This directly went against Darwin’s “survival of the fittest” principle that was considered gospel in scientific circles. Margulis’ paper was rejected by fifteen journals before getting accepted into the Journal of Theoretical Biology.

- YouTube www.youtube.com

Time would be on Margulis’ side, however. By the late ‘70s and early ‘80s, research proved that the two major building blocks of plants and animals, chloroplasts and mitochondria were at one time independent bacteria. This solidified the fact that on a biological level, connection trumps autonomy for longevity. And now that fact is written in textbooks, with no real story of the adversity it overcame to get there.

While it is customary for most new scientific theories to be met with criticism, especially those that completely shift the current narrative, many have noted that sexism played a key part in Margulis’ initial lack of acceptance. On more than one occasion, she herself had hinted that women were seen as mothers and wives first, and scientists second. She recalled that while married to fellow scientist Carl Sagan that “Carl would finish his sentence, unperturbed” while she was expected to “handle all the duties of a 1950s housewife, from washing dishes to paying the household bills.”

And yet, Margulis would have other ideas that were controversial that had nothing to do with her gender. Most famously, she did not believe that AIDS was caused by HIV, and instead believed it was cause by a syphilis-causing type of bacteria, despite there already being decades of research proving otherwise. That view was seen as an endorsement of AIDS denialism, which undermined prevention and treatment effort. Then later in life, Margulis became a vocal proponent of 9/11 conspiracy theories suggesting government involvement the in Twin Towers attacks.

And yet, perhaps this is one of those “you gotta take the good with the bad” situations. Margulis’ inherent contrarian nature gave us both these unfounded, even harmful stances, in addition to entirely new paradigms that altered our understanding of life itself.

And if nothing else, it illuminated the need for science to include multiple points of view in order to unlock the truth. It seems life is, after all, about coming together.

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Most Americans agree bed sheets get 'gross' after 35 days. Experts say it's much sooner.

This is how often you should wash your sheets, according to experts.

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Photo credit: Canva
The rest of your bedding doesn't need to be washed as often.

There's nothing better than hopping into bed with clean sheets. But let's be honest: washing your sheets can be a pain. From stripping the bed to putting sheets back on post-washing, it's a chore. But you may want to re-think how often you should be washing your bed sheets.

According to a survey of 1,000 Americans conducted by Mattress Advisor, the average time between sheet changings or washings in the U.S. is 24 days—or every 3 1/2 weeks, approximately. The same survey revealed that 35 days is the average interval at which unwashed sheets are "gross."

If that sounds about right to you, prepare to be shocked. According to experts, you should be washing your sheets *a lot* sooner than that for hygiene reasons.

- YouTube www.youtube.com

How often should you wash your sheets?

Hint: It's a lot more frequent than 24 days.

While there is no definitive number of days or weeks, most experts recommend swapping out used sheets for clean ones every week or two.

Dermatologist Alok Vij, MD told Cleveland Clinic that people should wash their sheets at least every two weeks, but probably more often if you have pets, live in a hot climate, sweat a lot, are recovering from illness, have allergies or asthma, or if you sleep naked.

We shed dead skin all the time, and friction helps those dead skin cells slough off, so imagine what's happening every time you roll over and your skin rubs on the sheets. It's normal to sweat in your sleep, too, so that's also getting on your sheets. And then there's dander and dust mites and dirt that we carry around on us just from living in the world, all combining to make for pretty dirty sheets in a fairly short period of time, even if they look "clean."

Maybe if you shower before bed and always wear clean pajamas you could get by with a two-week sheet swap cycle, but weekly sheet cleaning seems to be the general consensus among the experts. The New York Times consulted five books about laundry and cleaning habits, and once a week was what they all recommend.

Sorry, once-a-monthers. You may want to step up your sheet game a bit.

sheets, bed sheets, clean sheets, how often should you wash your sheets, how often should you wash your bed sheets Experts agree that this is how often you should wash your bed sheets.Photo credit: Canva

What about the rest of your bedding? Blankets and comforters and whatnot?

Olivia Parks, Owner + Lead Organizer at Nola Organizers, told Upworthy that duvet covers should be cleaned every week or so.

"Even though the cover protects the insert, the insert still collects body odor, sweat, body oils from lotions or other body products, crumbs if you eat in your bed, dog hair or cat hair, and more," she explained.

Somewhere between the Gen X and Millennial eras, young folks stopped being about the top sheet life, just using their duvet with no top sheet. If that's you, wash that baby once a week. If you do use a top sheet, you can go a couple weeks longer on the duvet cover.

For blankets and comforters and duvet inserts, Sleep.com says every 3 months. And for decorative blankets and quilts that you don't really use, once a year washing will suffice.

What about pillows? Pillowcases should go in with the weekly sheet washing, but pillows themselves should be washed every 3 to 6 months. Washing pillows can be a pain, and if you don't do it right, you can end up with a lumpy pillow, but it's a good idea because between your sweat, saliva and skin cells, pillows can start harboring bacteria.

@suzieqssss

Baking soda absorbs moisture and or odor and breaks down any residue that builds up! If you have allergies you should be doing this more often! #cleaning #lifehack #tiktokshopcybermonday #tiktokshopblackfriday #mattressvacuumcleaner

Finally, how about the mattress itself? Home influencers on TikTok can often be seen stripping their beds, sprinkling their mattress with baking soda, brushing it into the mattress fibers and then vacuuming it all out. Architectural Digest says the longer you leave baking soda on the mattress, the better—at least a few hours, but preferably overnight. Some people add a few drops of essential oil to the baking soda for some extra yummy smell.

If that all sounds like way too much work, maybe just start with the sheets. Pick a day of the week and make it your sheet washing day. You might find that climbing into a clean, fresh set of sheets more often is a nice way to feel pampered without a whole lot of effort.

This article originally appeared two years ago. It has been updated.

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Stanford researchers find a single question could be the key to changing someone's mind

Curiosity goes a lot further than we might think.

discussion, debate, disagreement, conversation, communication, curiosity
Photo credit: Canva

How do you get someone to open their minds to another perspective?

The diversity of humanity means people won't always see eye to eye, and psychology tells us that people tend to double down when their views are challenged. When people are so deeply entrenched in their own perspectives they're refusing to entertain other viewpoints, what do we do?

Frequently, what we do falls into the "understandable but ineffective" category. When we disagree with someone because their opinion is based on falsehoods or inaccurate information, we may try to pound them with facts and statistics. Unfortunately, research shows that generally doesn't work. We might try to find different ways to explain our stance using logic and reasoning, but that rarely makes a dent, either. So often, we're left wondering how on Earth this person arrived at their perspective, especially if they reject facts and logic.

According to Stanford researchers, turning that wondering into an actual question might be the key.

discussion, debate, disagreement, conversation, communication, curiosity Questions are more effective than facts when it comes to disagreements.Photo credit: Canva

The power of "Tell me more."

Two studies examined how expressing interest in someone's view and asking them to elaborate on why they hold their opinion affected both parties engaged in a debate. They found that asking questions like, "Could you tell me more about that?” and ‘‘Why do you think that?" made the other person "view their debate counterpart more positively, behave more open-mindedly, and form more favorable inferences about other proponents of the counterpart’s views." Additionally, adding an expression of interest, such as, ‘‘But I was interested in what you’re saying. Can you tell me more about how come you think that?” not only made the counterpart more open to other viewpoints, but the questioner themselves developed more favorable attitudes toward the opposing viewpoint.

In other words, genuinely striving to understand another person's perspective by being curious and asking them to say more about how they came to their conclusions may help bridge seemingly insurmountable divides.

discussion, debate, disagreement, conversation, communication, curiosity Asking people to elaborate leads to more open-mindedness.Photo credit: Canva

Stanford isn't alone in these findings. A series of studies at the University of Haifa also found that high-quality listening helped lower people's prejudices, and that when people perceive a listener to be responsive, they tend to be more open-minded. Additionally, the perception that their attitude is the correct and valid one is reduced.

Why curiosity works

In some sense, these results may seem counterintuitive. We may assume that asking someone to elaborate on what they believe and why they believe it might just further entrench them in their views and opinions. But that's not what the research shows.

Dartmouth cognitive scientist Thalia Wheatley studies the role of curiosity in relationships and has found that being curious can help create consensus where there wasn't any before.

“[Curiosity] really creates common ground across brains, just by virtue of having the intellectual humility to say, ‘OK, I thought it was like this, but what do you think?’ And being willing to change your mind,” she said, according to the John Templeton Foundation.

discussion, debate, disagreement, conversation, communication, curiosity Curiosity can help people get closer to consensus. Photo credit: Canva

Of course, there may be certain opinions and perspectives that are too abhorrent or inhumane to entertain with curious questions, so it's not like "tell me more" is always the solution to an intractable divide. But even those with whom we vehemently disagree or those whose views we find offensive may respond to curiosity with more open-mindedness and willingness to change their view than if we simply argue with them. And isn't that the whole point?

Sometimes what's effective doesn't always line up with our emotional reactions to a disagreement, so engaging with curiosity might take some practice. It may also require us to rethink what formats for public discourse are the most impactful. Is ranting in a TikTok video or a tweet conducive to this shift in how we engage others? Is one-on-one or small group, in-person discussion a better forum for curious engagement? These are important things to consider if our goal is not to merely state our case and make our voice heard but to actually help open people's minds and remain open-minded in our own lives as well.

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A girl's pet pig ate her homework. Teachers were stunned when mom sent them video proof.

"Okay, I have to admit this is a first for me!"

pigs, pets, homework, school, teachers, kids, dog ate my homework, excuses, funny, humor
By Andrew Watson/Wikimedia Commons & Canva

An Arizona girl claimed "My pig ate my homework!" Luckily, she had proof.

Believe it or not, "the dog ate my homework" excuse is over 100 years old. The first known anecdote involving a dog eating important documents came about around 1905. A professor was later recorded in 1929 writing, "It is a long time since I have had the excuse about the dog tearing up the arithmetic homework," suggesting the phrase had been around for some time.

In the century since, teachers the world over have heard every variation of excuse about why a student can't turn in their homework. But, in 2026, we may have fortuitously stumbled on a new one most teachers have never dreamed of.

Jacey Tinsley, a mom from Arizona, recently posted a story to social media that has to be seen to be believed. In the now viral post, she explains that her daughter Taylee was unable to turn in her homework for multiple subjects... because their pet pig ate it.

Yes, the Tinsleys have racked up quite a following on social media documenting life with their three mini-pigs, so it is certainly in the realm of possibility that one of the pigs could have gotten into Taylee's homework.

But would the teachers buy it?

Luckily, Tinsley was able to catch the whole thing on video via indoor Ring cam. In the footage, their pig Polly is caught red-handed snatching the backpack off of the counter, dragging it to the floor, and rifling through it—destroying several papers in the process. Tinsley took the initiative to email her daughter's teachers and school administrators with the indisputable photographic evidence.

Jacey Tinsley took full accountability for her daughter's missing work. "If/when you see any work that's partially eaten/chewed, that is 100% on us, not Taylee," she confessed.

Then, she hoped for the best.

The school staffers had no choice but to accept Jacey's ludicrous tale, and they got quite a kick out of it, too.

Taylee's principal was first to reply: "Okay, I have to admit this is a first for me!! I'm trying not to laugh hysterically..."

The science teacher chimed in next: "This is a first time in my teacher career to hear this and I find it hilarious."

The math teacher was a person of few words: "Oh my goodness, that is so funny."

Over two million people viewed the reel on Instagram and TikTok combined. Commenters were delighted by the ridiculous footage and had plenty of their own hard-to-believe stories of lost homework:

"I turned in homework once that was half eaten by my rabbits but all the answers weren't eaten so I got an A"

"That happened with my piggy she ate three page, so I sent a picture of our piggy Then the damn teacher wanted me to bring her to show and tell her"

"Had a classmate who brought in his homework that was literally eaten by his dog. My teacher thought it was so funny that he displayed the chewed up paper on his wall"

"My baby sister ate my homework once. I wish I was joking"

"My dog ate my homework which was a book I picked to read and it was about lying and saying that your dog ate your homework. I told my teacher and got yelled at so my Dad had to come in with the torn up book to prove I wasnt lying"

If there's anything to learn from the massive response to Tinsley's post, it's that, sometimes, the dog really does eat your homework. And if not the dog, then the rabbit, cat, or even pig.

Pigs can make terrific pets in the right home. They are surprisingly intelligent, playful, affectionate, and can be trained to do many of the tricks and tasks dogs can do.

- YouTube www.youtube.com

Pigs can, however, be quite destructive. Because they're so smart, any hint of boredom can drive them into a frenzy of activity; a favorite activity of many pigs is rooting. Rooting is when they use their powerful snout to push and dig at the ground—or whatever items happen to be around (like a backpack that smells like yesterday's lunch). It's an instinctual behavior that calms them and helps them find snacks.

Taylee got lucky this time that the whole incident was caught on camera. "The pig ate my homework," doesn't seem like the kind of excuse that's going to fly more than once without proof.

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'Remarkable' UPS driver runs into burning home to save 101-year-old woman

"I just did what I thought was right."

ups driver, ups, hero, house fire, elderly woman, orange county, california, local news, good news, ktla
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A delivery driver with a determined expression; a house on fire.

Fate often tests our courage at the most unexpected times. For UPS driver Willy Esquivel, that moment came on January 15 while he was completing a delivery in Orange County, California.

According to KTLA, Esquivel was on his routine route in Santa Ana when he noticed neighbors attempting to smother a blaze coming from the condo of Ann Edwards, a 101-year-old woman who lives alone.

Esquivel wasted no time entering the smoke-filled building to rescue Edwards, who seemed "very disoriented" and reluctant to leave. Nevertheless, Esquivel "picked her up and carried her safely outside," according to KTLA and a statement from the Orange County Fire Authority (OFCA).

A video posted on the OFCA's X account showed just how thick the smoke was pouring from Edwards' condo as firefighters arrived. The OFCA also acknowledged the resourceful neighbors who aided in the rescue.

"At the same time, the neighbors used fire extinguishers to knock down the kitchen fire," the OCFA wrote on X. "One of them, a roofer by trade, grabbed his ladder, climbed to the roof, and used a garden hose to spray water into the kitchen vent."

Thankfully, while Edwards was taken to the hospital, she was expected to make a full recovery. Her son, Rick, told KTLA that he was grateful to Esquivel for "sticking with her and getting her out of there."

As for Esquivel, rather than seeing himself as a hero, he told KTLA that he was "just a UPS driver who was in the right place at the right time."

"I just did what I thought was right," he added. "At the end of the day, she's someone's mother, someone's grandmother, great-grandmother."

- YouTube www.youtube.com

Moments like this rarely announce themselves ahead of time. They unfold in the middle of ordinary days, on familiar streets, while people are simply doing their jobs or moving through their routines. Delivery drivers like Esquivel travel through neighborhoods every day, often unnoticed, yet uniquely positioned to sense when something is wrong. On this day, being present and paying attention made all the difference.

Just as striking as Esquivel's bravery was the way neighbors instinctively sprang into action. Without hesitation, they grabbed fire extinguishers, ladders, and garden hoses, each contributing whatever they had in the moment. Together, their quick thinking and collaboration helped prevent an even greater tragedy.

"A remarkable outcome made possible by quick action, teamwork, and people looking out for one another in a moment of need," the OCFA wrote on X.

It's easy to assume someone else will step in. That it's not your fight. That it's not your responsibility. Heroism requires the opposite mindset. And at a time when the world can feel increasingly short on that quality, this story is a refreshing reminder that yes, there are still good people out there willing to help, even when it means helping complete strangers while on the job.

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