In 1968, ethologist John B. Calhoun created "Universe 25." It was a mouse utopia. unlimited food, unlimited water, zero predators, and perfect climate control. It was designed to support 3,800 mice. But the population peaked at just 2,200 and then collapsed to zero. Why? Because without the struggle to survive, the mice broke psychologically. They formed violent gangs, mothers abandoned their babies, and a group called "The Beautiful Ones" emerged—males who stopped fighting or mating and did not
0:11
In 1968, ethologist John B. Calhoun created "Universe 25." It was a mo…
71.1K views3 months ago
FacebookNerds Theories
babieBambushka ꒰ᐢ. ̫ .ᐢ꒱ on TikTok
4:11
babieBambushka ꒰ᐢ. ̫ .ᐢ꒱ on TikTok
10 months ago
TikTokbabiebambushka
Perfect World, Total Collapse The Mouse Experiment #shorts
1:12
Perfect World, Total Collapse The Mouse Experiment #shorts
1.1K views1 month ago
YouTubeTheory & Void
The Universe 25 ...
11:06
The Universe 25 ...
58 views2 weeks ago
YouTubeBrofessor Lee
Universe 25 (How A Species Destroys Itself)
1:29
Universe 25 (How A Species Destroys Itself)
1.7K views1 month ago
YouTubeSeriously Deep
The Experiment That Turned Paradise Into Hell
8:26
The Experiment That Turned Paradise Into Hell
804 views2 weeks ago
YouTubeOddly Works
The Dark Truth of Paradise: Calhoun's Mouse Utopia Experiment #Shorts
1:21
The Dark Truth of Paradise: Calhoun's Mouse Utopia Experime…
1 month ago
YouTubeHistorySaid
2:14
@hazard.one.actual on Instagram: "John B. Calhoun on the behaviou…
7.3K views4 months ago
Instagramhazard.one.actual
John B Calhoun - Alchetron, The Free Social Encyclopedia
Aug 15, 2013
alchetron.com
56:35
Calhoun: American Heretic
3.9K viewsFeb 22, 2021
YouTubeUS National Archives
8:22
How to Defuse the Overpopulation Bomb
1.5M viewsFeb 13, 2018
YouTubeBe Smart
26:46
John B. Calhoun's Preliminary Rat Study Funded by Rockefeller Fou…
55.3K viewsAug 15, 2013
YouTubeTheBloomergal
24:43
The Mouse Utopia Experiments | Down the Rabbit Hole
10.5M viewsOct 7, 2017
YouTubeFredrik Knudsen
13:47
John B. Calhoun and the Rats of N.I.M.H.
239.8K viewsSep 6, 2019
YouTubeThe History Guy: History Deserves to Be Reme…
51:29
John C. Calhoun: Defender of Racial Slavery & White Democracy
9K viewsApr 6, 2021
YouTubeLetters and Politics
6:13
The Doomed Mice Utopia Of Universe 25 (Explained)
95.7K viewsJan 29, 2021
YouTubeKyle Talks Money
9:48
Population Bomb: The Overpopulation Theory That Fell F…
53.4K viewsOct 28, 2019
YouTubeRETRO REPORT
38:29
John B. Calhoun Film 7.1 [edited], (NIMH, 1970-1972)
498.3K viewsNov 9, 2017
YouTubeNational Library of Medicine
9:34
Stopping overpopulation before we reach 10 billion people on Earth | …
110.9K viewsFeb 16, 2018
YouTubeTEDx Talks
0:06
@nostvil on Instagram: "The “Universe 25” experiment, conduc…
91.2K views4 months ago
Instagramnostvil
7:58
That Time a Guy Tried to Build a Utopia for Mice and it all Went to H…
5.9M viewsDec 28, 2018
YouTubeToday I Found Out
4:58
John C. Calhoun
54.9K viewsJan 8, 2015
YouTubeSouth Carolina ETV
5:38
John C. Calhoun: American
13.8K viewsMar 29, 2021
YouTubeAbbeville Inst
1:34
Universe 25: The Mouse Utopia Collapse
466 views3 months ago
YouTubeThai Peace & Harmony
0:43
Universe 25: The Mouse Utopia
986 viewsAug 2, 2024
YouTubeSnapFacts
1:18
Universe 25 Experiment
31.2K viewsFeb 26, 2025
YouTubeVajiram and Ravi Official
0:07
The “Perfect” Mouse Society That Destroyed Itself
27.5K views1 month ago
YouTubeRoman World Mysteries
8:34
Calhoun's Mouse Utopia: A Chilling Tale of Overpopulation and Social …
612 viewsMay 7, 2024
YouTubeSTBossEn
4:21
The Experiment That Predicted Our Extinction
366 views4 months ago
YouTubeEarth Paradox
2:24
Universe 25: The Mouse Utopia Experiment
684 views3 months ago
YouTubeMind in Numbers
See more videos
Static thumbnail place holder