They Set 4 Bison Loose In An English Forest… A Year Later The Transformation Was Extraordinary

21 Mar 2026
Video Description
Nobody expected the woodland to survive the way it did. Not the researchers, not the land managers, and certainly not the four animals that arrived in Kent in twenty twenty-two and immediately started tearing it apart.

European bison have been absent from Britain for six thousand years. What happened when they came back was not what conservation usually looks like — and the data from the first year changed how ecologists are thinking about woodland restoration across the entire country.

This channel explores the hidden engineering systems that keep the modern world running — from water and energy to megaprojects, infrastructure, and advanced industrial technology.

Each video breaks down how these systems actually work, why they were built, and what happens when they fail. The focus is on real-world engineering, geopolitics, resource scarcity, and the technology shaping the future of civilization.

If you’re interested in infrastructure, civil engineering, water systems, energy networks, and large-scale problem solving, you’re in the right place.

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Fibonacci slop is out of control

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A look at Fibonacci’s original manuscript from 1202; the Liber Abaci.

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Editing by Noor Hanania

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In 2008, Japan’s Kaguya spacecraft captured the first high-definition video of a “full Earth-rise” from lunar orbit. It was jointly developed by JAXA and NHK.

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This picture broke my brain

22 Mar 2026
Escher’s Print Gallery, and the tour of complex analysis it invites.
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Home page: https://www.3blue1brown.com

Original paper by de Smit and Lenstra:
https://pub.math.leidenuniv.nl/~smitb…

Co-written by Paul Dancstep, who handled many of the animations in the art section, including the delightful mesh warp scene.

Aaron Gostein helped with the manim animations in the section introducing complex functions.

Artwork provided by Talia Gerhson, Mitchell Zemil, and Anna Fedczuk.

Music by Vincent Rubinetti

Timestamps:

0:00 – The print gallery
13:04 – Conformal maps from complex analysis
21:41 – The complex exponential
25:56 – The complex logarithm
32:32 – 3b1b Talent
33:14 – Constructing the key function
40:16 – The deeper math behind Escher

——————

These animations are largely made using a custom Python library, manim. See the FAQ comments here:
https://3b1b.co/faq#manim

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3blue1brown is a channel about animating math, in all senses of the word animate. If you’re reading the bottom of a video description, I’m guessing you’re more interested than the average viewer in lessons here. It would mean a lot to me if you chose to stay up to date on new ones, either by subscribing here on YouTube or otherwise following on whichever platform below you check most regularly.

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Eerie Flight Of Starlings In The Netherlands

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What Happened To Canada?

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Manchester, England

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The fascinating history of London Bridge over nearly 2000 years

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Nahuatl words in Spanish

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Superb WOODEN HOUSE in the hills of Brazil in Cunha, by Mariana Caires & co (2024)

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Is This England’s Oldest Fairy Tale?

21 Mar 2026 #History #EnglishFolklore #FairyTales
Fairies are often thought of as part of Celtic folklore — but they run deep in English history too.

This video explores one of the earliest recorded “fairy-like” encounters in England: the Green Children of Woolpit. Written down over 800 years ago by medieval chroniclers, this story predates the very word fairy in the English language.

In this episode, we don’t just tell the story — we break it down. What did people in the 12th century think they were seeing? Why does this account share so many features with later fairy lore? And could this be one of the first moments where a “fairy” enters English history… before the concept even had a name?

Drawing on accounts from Ralph of Coggeshall and William of Newburgh, we explore the strange details:

Green-skinned children speaking an unknown language

A twilight world called St Martin’s Land

A cave, bells, and a missing entrance

Behaviour that closely mirrors later “changeling” folklore

We also place the story alongside other early British accounts, including:

Gerald of Wales and the story of Elidor

Walter Map and his accounts of otherworldly beings

Is this a misunderstood historical event? A cultural crossover from Wales? Or something stranger — a glimpse of a belief system just beginning to take shape?

This is not just a story. It’s a moment where folklore, history, and human perception collide.

#History #EnglishFolklore #FairyTales #MedievalHistory #Woolpit #GreenChildren #Folklore #BritishHistory #HiddenHistory #MythAndLegend #StrangeHistory #HistoricalMystery #Fairies #AngloSaxon #MedievalEngland #mythology #storytelling #storyteller #myths #fairy #history

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The processes of passing Panama Canal

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