Here is a concise summary of the content:
**50 Mind-Blowing Facts Across Various Domains**
* **Technology & Science**:
+ Google uses goats for lawn mowing
+ Nitrogen in potato chip bags keeps chips crisp
+ Brass door knobs self-disinfect
+ Army ants used as natural sutures
* **History & Geography**:
+ Ancient Babylonians used base 60 math
+ North Korea's calendar is based on Kim Il-sung's birth (currently year 105)
+ German was once the 2nd most spoken language in the US
* **Human Interest & Psychology**:
+ Intro to "ambiverts" (between introverts and extroverts)
+ People who appear distracted may have sharper brains
+ Phantom vibration syndrome affects ~68% of people
* **Business & Economy**:
+ Nintendo's massive financial reserves
+ Taiwan offers free Wi-Fi to tourists
+ The International Space Station is the most expensive thing ever built (~$160 billion)
* **Unconventional & Shocking**:
+ A man survived 3 days underwater in a sunken ship
+ A woman was jailed for sending herself abusive messages from fake profiles
+ A Chinese man exploited a first-class ticket for free food for almost a year
Here are the key facts extracted from the text, numbered and in short sentences, excluding opinions:
**Technology & Science**
1. Google rents goats to replace lawn mowers at their Mountainview headquarters.
2. Ancient Babylonians used base 60 for math, influencing 60 seconds in a minute and 360 degrees in a circle.
3. The air in potato chip bags is actually nitrogen, keeping chips crisp and providing a shipping cushion.
4. Brass door knobs can disinfect themselves in 8 hours due to the oligodynamic effect.
**Geography & Culture**
5. Taiwan offers free Wi-Fi to all tourists through over 4,000 hotspots.
6. North Korea's calendar is based on the birth of Kim Il-sung, making it currently the year 105.
7. In North Korea, citizens can choose from only 28 government-approved haircuts.
8. Sand from the Sahara is blown to the Amazon, recharging its minerals.
**History**
9. In 1962, the CAA tipped off South Africa's intelligence service about Nelson Mandela's location, leading to his arrest.
10. Teddy Roosevelt was shot before a speech in 1912 but gave a 90-minute talk anyway.
11. President JFK purchased 1,200 Cuban cigars hours before the Cuban trade embargo in 1962.
12. German was the second most widely spoken language in the US before being repressed during WW1.
**People & Animals**
13. Jack Johnson, the first black heavyweight boxing champion, was once given a speeding ticket but gave the officer $100.
14. Harrison Okene survived 3 days at the bottom of the ocean in a sunken ship in 2013.
15. Stamatis Moraitis, a Greek war veteran, outlived his cancer diagnosis by over 40 years, living to 102.
16. Mary Krupa, a Penn State student, is known as a "squirrel whisperer" for her ability to interact with and dress squirrels.
**Miscellaneous**
17. Nintendo could run a $250 million deficit each year and still survive until 2052 due to its vast wealth.
18. Approximately 3 million shipwrecks worth billions are estimated to be on the ocean floor.
19. The International Space Station is the most expensive thing ever built, costing over $160 billion.
20. The NYPD would be the 20th best-funded army in the world if NYC were its own country.