Mexico City is built on top of an underground resevoir!
47
The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
63
The water between India and Sri Lanka is only 3-30 feet deep and was purportedly passable on foot until 1480 AD when a cyclone moved some sand around.
1
It's still possible to see the division between East and West Germany due to different light bulbs.
5
There are approximately three chickens for every human on Earth.
13
Every person in the world can fit in Texas and be given over 1000 sq ft in which to live.
14
There's a lake under Antarctica that is 25 million years old called Lake Vostok.
109