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Groucho's Fact Hunt

The idea that people ever thought the earth was flat is a myth - no one educated has thought this for 2500 years. Erastothanes of cyrene mesured the circumference of the earth in 200 BC, (https://en.wikipedia.org/wiki/Eratosthenes), without leaving Egypt (!), and was accurate to within 15%.

His error came from assumptions about the earth being a perfect sphere, and the distance between two cities in Egypt. His actual method was bang on.
 

In general, crocodiles inhabit more brackish (mixed salt and fresh) water. Basically, where the Everglades meet the ocean. Alligators, on the other hand, live in more fresh water environments. So, a little more inland. However, there are places where alligators and crocodiles fight for the same living space. Crocodiles usually win those fights. But both live in the Everglades. The Everglades are pretty awesome actually. Not sure if anyone here has heard of them. It's home to some the craziest animals in the world.. including panthers.

Oh dear!
 
Water pressure must be immense
Very.

In the event a submarine exceeded 'crush depth', you wouldn't die from drowning or anything like that. No, the pressure of the water would rapidly compress the air in the submarine, igniting it (a wonderful phenomenon known as 'compression ignition), so you would be incinerated in agonising pain a split seconds before the water pressure hits you and pancakes you.
 
Very.

In the event a submarine exceeded 'crush depth', you wouldn't die from drowning or anything like that. No, the pressure of the water would rapidly compress the air in the submarine, igniting it (a wonderful phenomenon known as 'compression ignition), so you would be incinerated in agonising pain a split seconds before the water pressure hits you and pancakes you.
Ah fascinating yet I'd imagine somewhat scary if you were down there with things going wrong.
 

Taken from a publication in 2012 :

Every single day, thrity nine million bullets are made. Worldwide military spending, at the lowest estimate, is £1,226 trillion a year. Despite the enormous amounts of armaments manufactured the demand never lessons and it's impossible to estimate the volume. The nine largest exporters of weapons in the world are USA, Russia, Germany, France, Holland, GB, Italy, Sweden and China.

Frightening.
 
The idea that people ever thought the earth was flat is a myth - no one educated has thought this for 2500 years. Erastothanes of cyrene mesured the circumference of the earth in 200 BC, (https://en.wikipedia.org/wiki/Eratosthenes), without leaving Egypt (!), and was accurate to within 15%.

His error came from assumptions about the earth being a perfect sphere, and the distance between two cities in Egypt. His actual method was bang on.
Hold on! The earth is round? I've heard it all now.
 
The idea that people ever thought the earth was flat is a myth - no one educated has thought this for 2500 years. Erastothanes of cyrene mesured the circumference of the earth in 200 BC, (https://en.wikipedia.org/wiki/Eratosthenes), without leaving Egypt (!), and was accurate to within 15%.

His error came from assumptions about the earth being a perfect sphere, and the distance between two cities in Egypt. His actual method was bang on.
I'm confused.

Are those statements saying that education only started 2500 years ago or that people didn't start 'thinking' until 2500 years ago or both?
 

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