Australia's Great Barrier Reef is 1,250 miles long!
45
The water of the Antarctica is so cold that nothing can rot there.
334
The city of Houston, Texas is built on a swamp and is slowly sinking!
89
The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
63
There are approximately three chickens for every human on Earth.
13
It's still possible to see the division between East and West Germany due to different light bulbs.
5
10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41