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Over the past few years, there has been a growing number of people who believe the Earth is flat. A recent YouGov survey of more than 8,000 Americans found that as many as one in six are "not entirely certain the world is round."

Maybe there wouldn't be so much scientific illiteracy in this world if we still had Carl Sagan around.

Sagan hosted the original version of TV's "Cosmos" in 1980. It would be revived in 2014 with astrophysicist Neil deGrasse Tyson at the helm.


In the first episode of "Cosmos," Sagan easily proved the Earth was a sphere using a piece of cardboard, some sticks, and the work of an ancient Libyan-Greek scholar, Eratosthenes.

Carl Sagan explains how Eratostenes knows the earth is curvewww.youtube.com

"How could it be, that at the same moment, a stick in Syene would cast no shadow and a stick in Alexandria, 800 km to the north, would cast a very definite shadow? Sagan asked.

"The only answer was that the surface of the Earth is curved," he added. "Not only that but the greater the curvature, the bigger the difference in the length of the shadows."

Considering the distance between the two cities and the lengths of the shadows they produced, Eratosthenes was able to determine that the Earth had a seven-degree curve. He used that calculation to speculate the Earth was 25,000 miles in circumference.

These days we know that the earth is 24,860 in circumference, so Eratosthenes was 140 miles off, not bad for over 2,000 years ago.


This article originally appeared on 7.22.20

Curiosity Show/YouTube

The Ames window trick.

Optical illusions are universally beloved for how they trick our brains and blow our minds. There's a reason we enjoy magic shows and Escher paintings and are mesmerized by fake oases in the desert. We love seeing things that bend our perceptions of reality, and the science behind the magic always proves fascinating as well.


The Ames window is a pretty well-known optical illusion, but it's always cool to see. When spun, the angled window appears to oscillate back and forth instead of spin all the way around. But this video adds a twist that makes the effect even more mindbending—our brains simply can't process objective reality mixed with an optical illusion.


The YouTube channel Curiosity Show explains the science of the illusion and gives a DIY demonstration for making your own Ames window. But wait until the pen gets taped to the window and spun. This is some real-life magic right here. Mind. Blown.


This article originally appeared on 02.21.20

Education

Youth interest in STEM peaks around age 11. UScellular wants to change that.

Kids are losing interest in STEM subjects between ages 11 and 15. Here's what that means for future innovation.

Photo courtesy of UScellular

Kids on a field trip learn from Sania Naseem, Senior RF Planning Engineer at UScellular.

Imagine being a 12-year-old girl in a small town who’s interested in computers. You’ve learned a bit of programming online, but you don’t know anyone who works in the tech field and your school district doesn’t have the kinds of classes you need to explore further.

How likely would you be to keep and pursue that interest?

Since the internet changed everyone’s lives in the 1990s, there’s been a push for Science, Technology, Engineering and Mathematics (STEM) education. Universal reliance on technology has made STEM careers not just desirable but vital, and the speed at which those fields are moving means we need young people to stay interested in them.

Research indicates that we’ve largely succeeded in reaching kids when they’re young—children demonstrate a deep fascination with STEM subjects up to age 11. But something shifts during adolescence. Past age 11, interest in STEM starts to wane, often dissipating by age 15.

The question is why.


To get to the bottom of this STEM age/interest gap mystery, wireless carrier UScellular partnered with developmental psychologist and researcher Richard Rende, Ph.D. Through a state-of-the-art analysis of the research, Dr. Rende helped uncover the barriers that prevent youth—particularly girls and those living in rural communities—from maintaining and nurturing their interest in STEM.

kids walking with an adult guide near a school busStudents taking a STEM field tripPhoto courtesy of UScellular

Dr. Rende found that keeping kids from losing STEM interest as they become teens requires programs that are equitable, relatable, relevant and supportive.

Here’s what those four drivers look like in practice:

Equitable

- Bringing STEM programs to rural areas that don’t have access to advanced courses or school-based curriculum
- Countering the notion that STEM isn’t for everyone and offering buffers for when kids are confronted with stereotypes or biases

Relatable

- Exposing girls to women in STEM professions who share similar backgrounds in smaller and rural communities
- Having STEM professionals share their experiences growing up so youth don’t see them as “superheroes” doing something unattainable

Relevant

- Programs and field trips that demonstrate how STEM is applied, especially in ways that connect to the local environment or technology kids already use
- Incorporating kids’ voices to help guide the elements of a program

Supportive

- Provide supportive mentorship, especially when projects become more complicated and require emotion regulation and resilience
- Teach cognitive skills that will help kids believe they have the capacity to succeed in STEM subjects

kids on a STEM field trip Kids learning about cell towers from Cheryl Dennard, Senior Manager of Core Services Engineering at UScellularPhoto courtesy of UScellular

To test out his findings before sharing them with the world, Dr. Rende worked with UScellular’s non-profit partner, YWCA, which has an after-school and summer program called TechGYRLS, designed to inspire girls in grades 3 to 8 to consider future careers in STEM fields. Together they created a refreshed STEM program guide incorporating Dr. Rende’s research and worked with focus groups at various YWCA locations to get feedback.

“What we see to date is that programming and mentoring to ‘train’ kids to be STEM people is not always enough to sustain and encourage interest during the transition to adolescence, especially for underserved youth,” says Dr. Rende. “We need to help them see the opportunities in STEM that spark their curiosity and gain belief that they can confidently explore all the possibilities available to them in STEM, including those that go beyond the traditional STEM careers like mathematician or scientist. It could be a vet, a nurse, wireless network engineer, arborist, audio engineer, turf scientist, or mechanical engineer and may not be a career that requires years and years of higher education.”

After-school enrichment programs like YWCA’s TechGYRLS can be found in communities all over the country, and parents, guardians and teachers can help the kids in their communities by identifying similar programs and encouraging them to participate. If teachers or youth-focused non-profits want to create their own STEM program, Dr. Rende’s whitepaper can help inform their approach and design to keep kids interested.

UScellular and YWCA are working on a digital version of the program guide to increase access for even more youth and help educators improve their STEM programming. Longer term, the perceptions and attitudes of the TechGYRLS participants will be measured to evaluate if the current decline in STEM interest is being reduced or averted. Advancing innovation requires people who pursue careers in STEM fields, so the more interest we can spark and sustain in young people, the brighter our future will look.

Learn more about how UScellular is supporting STEM education here.
Innovation

12 real scientific facts that sound completely made up, but aren't

Did you know that placebos work even when people know it's a placebo?

Real life is far stranger than fiction.

And now we have the proof.

A recent thread on r/AskReddit posed the question: "What sounds like pseudoscience, but actually isn't?"

The answers were far more interesting than all the science classes I ever took. Combined.

Let's take a look at some of the strangest scientific facts the good people of the Internet could come up with.

1. Phantom limbs & mirror therapy

Most people have heard of phantom limbs and phantom limb pain, the phenomenon where someone who's lost a limb can still feel pain or other sensations where the missing appendage should be.

But the connection between the brain and the missing limb gets even wilder the more you dig into it.

Did you know that a common treatment for phantom limb pain is something called "mirror" therapy, where a therapist will use a series of mirrors to make it look like the missing limb is still there? This tricks the brain and eases discomfort over time.

Sounds like psuedoscience, but can be extraordinarily effective!

Tip of the cap to u/MonSoleil937 for this one.

2. Ear crystals going haywire

Close-up of an ear with skull earring Photo by Christof Görs on Unsplash

User u/shinjithegale nominates "Benign Paroxysmal Positional Vertigo", or BPPV, a common type of vertigo and dizziness that usually occurs in people over the age of 60.

The weird part? The vertigo is caused by small calcium crystals inside the ear coming loose and flowing into the inner ear.

"Your magical ear crystals are out of sync" definitely sounds fake but is 100% a real, treatable condition.

3. Redheads need more anesthesia than everyone else

This one comes from u/explorerdoraaaaaa — and it can't possibly be true, right?

Wrong.

Red-haired people, who make up only about 2% of the population, may process pain differently from the rest of us and have been shown to often be more tolerant to local anesthetics — they may need up to a 20% stronger dose!

They might also be more sensitive to opioids and less sensitive to shots, needles, and electric shocks.

4. Speaking in a different language can unlock an alternate personality

Where are our personalities stored? In our brains? Our souls?

Despite sounding completely implausible, maybe neither!

If you learn a new language or grow up speaking multiple languages, your personality make be markedly different depending on which language you're speaking.

One study gave people who grew up in Spanish/English bilingual households a personality test in each language and found that their values and personality traits were dramatically different in the respective results.

5. Platypuses exist

a platypus swimming in a body of water Photo by Aaron De Wit on Unsplash

That's it. That's the fact, courtesy of u/Steeze-Schralper6968.

The list of true but baffling facts about platypuses goes on and on.

For starters, they're a mammal with a beak that lays eggs, sweats milk, and shoots poison.

If you read about it in a SciFi novel you'd struggle to suspend your disbelief.

6. Duct tape can cure warts for some reason

Most common warts are harmless, but we still don't like having them. That said, because they're not hurting anyone people are hesitant to try invasive or expensive procedures to remove them.

Enter Duct Tape Occlusion Therapy, which is a real thing. Simply apply duct tape to the wart, remove, clean the area, and repeat every couple of days.

Weirdly duct tape therapy isn't just ripping the warts off. There's some evidence that the adhesive used on the tape may cause an immune response in the skin that causes the warts to clear up.

7. The world is brighter for blue-eyed people — and they see better at night


macro shot photography of person's right eye Photo by Jordan Whitfield on Unsplash

It sounds like psuedoscience, for sure, but eye color isn't purely aesthetic.
People with lighter colored eyes — with less melanin in them — are more sensitive to light.
For blue-eyed people, that may mean they're more sensitive to bright daylight and have better vision at night.

I've always wondered why I can barely walk outside on a cloudy day without sunglasses, and now I know!

8. Eye-Movement Desensitization and Reprocessing

EMDR therapy, nominated in the thread by u/taurussy, sounds like something you'd see a stage hypnotist perform on tipsy audience members.

In reality, it's a powerful therapy for processing trauma.

EMDR involves a patient processing traumatic memories while performing therapist-directed eye movements or otherwise tracking an external stimulus, like a light or an audio track.

The theory is that the process can form new connections between blocked-off and painful memories and more adaptive memories or information, which allows for healing.

9. The placebo effect & open-label placebos

Most of us know about the placebo effect, but it's still almost too unbelievable to be real.

(As a refresher, an example of the placebo effect might be someone with a cold feeling better after taking a "sugar pill" with no medicine in it that they were told would cure them.)

But here's something wild you probably didn't know about placebos:

They can work just as well even when people know they're taking a placebo!

The things our brains can "trick" us into doing are truly incomprehensible.

10. Teratomas

Teratomas sound more like nightmare-fuel than psuedoscience, but they're still worth a mention from u/flugualbinder.

Teratomas are rare kinds of tumors that can grow and contain hair, bones, muscle, and even teeth.

They are real, and you will look up photos of them at your own peril.

11. Pain is all in your head — kind of

Pain is real, and it's valuable information for your body that something is wrong.

But scientists have learned a lot about it, specifically when studying chronic pain. And we know now that our emotions, our beliefs, and other aspects of what happens in our brains plays a big role in how we experience pain.

One study found that Pain Reprocessing Therapy (PRT), basically training the brain to "unlearn" pain, was more effective than a placebo and normal pain management care.

It gives credence to something that sounds completely unbelievable: In some cases, you can "mind over matter" your way to hurting less.

12. Grass screams when you cut it

Thank you to u/arealcabbage for this horrifying image:

"The grass screams distress signals to the next lawn over when you're mowing."

Believe it or not, that's true — in a sense. That freshly-cut grass smell we all like? It's actually a distress signal designed to warn other plant-life in the area of danger.

It's a stretch to say that your lawn feels pain, but it does have some survival instincts. Now if we could only say for sure why humans love the smell so much!