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IFLScience
@iflscience.com
13K followers 86 following 3.2K posts
The lighter side of science 🚀🧪🔭🧬 For more: https://sked.link/iflscience
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iflscience.com
How Eratos­thenes Measured The Earth's Circumference With A Stick In 240 BCE, At An Astonishing 38,624 Kilometers

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How Eratos­thenes Measured The Earth's Circumference With A Stick In 240 BCE, At An Astonishing 38,624 Kilometers
Though the exact length of a "stadia" is unknown, his measurement is thought to be accurate to within one percent of the actual circumference of the Earth.
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November 26, 2025 at 9:30 PM
iflscience.com
Why Is My Eye Twitching Like That?!

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What Your Annoying Eyelid Twitch Means, And What To Do About It
Don't panic – it'll only make things worse.
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November 26, 2025 at 8:00 PM
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Human Evolution Isn't Fast Enough To Keep Up With Pace Of The Modern World

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Human Evolution Isn't Fast Enough To Keep Up With Pace Of The Modern World
Your fight or flight response is supposed to be for life or death situations, not answering an email.
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November 26, 2025 at 7:00 PM
iflscience.com
Krampusnacht: What's Up With The Terrifying Christmas-Time Pagan Parades In Europe?

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Krampusnacht: What's Up With The Terrifying Christmas-Time Pagan Parades In Europe?
Have you been good this year?
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November 26, 2025 at 5:45 PM
iflscience.com
Why Does The President Pardon A Turkey For Thanksgiving?

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Why Does The President Pardon A Turkey For Thanksgiving?
Strange, but definitely a lot less controversial than some presidential pardons.
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November 26, 2025 at 5:01 PM
iflscience.com
This will be historic! 🔭
On November 13, 2026, Voyager 1 will reach one full light-day away from Earth
November 26, 2025 at 3:45 PM
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Is The Perfect Pebble The Key To A Prosperous Penguin Partnership?

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Is The Perfect Pebble The Key To A Prosperous Penguin Partnership?
For gentoos, it's just the beginning.
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November 26, 2025 at 3:00 PM
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Have We Finally "Seen" Dark Matter? Galactic Gamma-Ray Halo May Be First Direct Evidence Of Universe’s Invisible "Glue"

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Did Scientists Just "See" Dark Matter For The First Time?
What was once the leading explanation for dark matter may have simply been underestimating the mass of the particles that make it up.
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November 26, 2025 at 2:15 PM
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How Many Teeth Did T. Rex Have?

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How Many Teeth Did T. Rex Have? 60 Banana-Sized Reasons You Didn’t Want To Mess With These Dinosaurs
“They were likely able to crush bone.”
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November 26, 2025 at 1:30 PM
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In 1954, Soviet Scientist Vladimir Demikhov Performed "The Most Controversial Experimental Operation Of The 20th Century"

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In 1954, Soviet Scientist Vladimir Demikhov Performed "The Most Controversial Experimental Operation Of The 20th Century"
Demikhov was a pioneer of heart surgery. But thanks to his other, unusual, "interests", that hardly ever gets brought up.
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November 26, 2025 at 12:30 PM
iflscience.com
Some crawled out of the ocean and then several million years later, crawled right back in.

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When Did Some Ancient Extinct Species Return To The Sea? Machine Learning Helps Find The Answer
Some crawled out of the ocean and then several million years later, crawled right back in.
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November 26, 2025 at 11:15 AM
iflscience.com
What Is The Rarest Color In Nature? It's Not Blue

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What Is The Rarest Color In Nature? It's Not Blue
Even animals that appear this color may be playing tricks on you.
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November 26, 2025 at 10:30 AM
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Interstellar Comet 3I/ATLAS May Have A Course-Altering Encounter Before It Heads Towards The Gemini Constellation

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Interstellar Comet 3I/ATLAS May Have A Course-Altering Encounter Before It Heads Towards The Gemini Constellation
According to the team, the object likely came from the direction of Sagittarius, and will depart our Solar System towards Gemini. Before it leaves, it may have a course-altering encounter with our…
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November 26, 2025 at 9:33 AM
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Australia Is About To Ban Social Media For Under-16s. What Will That Look Like (And Is It A Good Idea?)

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Australia Is About To Ban Social Media For Under-16s. What Will That Look Like (And Is It A Good Idea?)
Other countries are following suit. Should the US ban social media too?
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November 25, 2025 at 8:00 PM
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Why Do Cuttlefish Have Wavy Pupils?

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Cuttlefish Have Seriously Freaky Eyes. Why Are Their Pupils Shaped Like A "W"?
Is it camouflage, or something more?
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November 25, 2025 at 7:00 PM
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Watch Platinum Crystals Forming In Liquid Metal Thanks To "Really Special" New Technique

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Watch Platinum Crystals Forming In Liquid Metal Thanks To "Really Special" New Technique
They are not only pretty – they also have some cutting-edge tech applications.
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November 25, 2025 at 5:45 PM
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The Universe Could Be Simple – We Might Be What Makes It Complicated, Suggests New Quantum Gravity Paper Prof Brian Cox Calls “Exhilarating”

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The Universe Could Be Simple – We Might Be What Makes It Complicated, Suggests New Quantum Gravity Paper Prof Brian Cox Calls “Exhilarating”
The British physicist also praised a truly inspired footnote in this preprint paper.
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November 25, 2025 at 5:00 PM
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Is mRNA The Future Of Flu Shots? New Vaccine 34.5 Percent More Effective Than Standard Shots In Trials

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Is mRNA The Future Of Flu Shots?
The same mRNA technology that brought us the COVID-19 vaccines could soon be coming for flu.
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November 25, 2025 at 3:45 PM
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What Did Dodo Meat Taste Like? Probably Better Than You’ve Been Led To Believe

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What Did Dodo Meat Taste Like? This 1601 Account Appears To Contradict A Common Myth
“They were very tough to eat, although the breast and the stomach were very good.”
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November 25, 2025 at 3:00 PM
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Objects Look Different At The Speed Of Light: The "Terrell-Penrose" Effect Gets Visualized In Twisted Experiment

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Objects Look Different At The Speed Of Light: The "Terrell-Penrose" Effect Gets Visualized In Twisted Experiment
The effect, first predicted over 60 years ago and regarding objects traveling near the speed of light, has been lent support by a twisted experiment.
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November 25, 2025 at 2:15 PM
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What Is Lüften? The Age-Old German Tradition That's Backed By Science

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What Is Lüften? The Age-Old German Tradition That's Backed By Science
Could we offer you some stoßlüften?
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November 25, 2025 at 11:15 AM
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How Do Astronauts Deal With Dirty Laundry In Space?

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How Do Astronauts Deal With Dirty Laundry In Space?
Few options, some involving more flames than others.
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November 25, 2025 at 10:30 AM
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What Exactly Is The “Man In The Moon”?

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What Exactly Is The “Man In The Moon”?
Man, Woman, Rabbit, Death? Not the four genders but a pareidolic effect seen with the full Moon.
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November 25, 2025 at 9:02 AM
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"Dancing" Turtles Feel Magnetism Through Crystals Of Magnetite, Helping Them Navigate

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"Dancing" Turtles Feel Magnetism Through Crystals Of Magnetite, Helping Them Navigate
By feeling the Earth's magnetic field inside their bodies, the turtles can build a map.
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November 25, 2025 at 9:00 AM
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Physicists Say The Entire Universe Might Only Need One Constant – Time

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Physicists Say The Entire Universe Might Only Need One Constant – Time
In a cafe at CERN in 1992, three physicists realized they disagreed about how many constants are needed to describe all of nature. A recent paper suggests only one – time – is necessary.
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November 24, 2025 at 10:30 PM