There are approximately three chickens for every human on Earth.
13
The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
63
10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41
If Manhattan had the same population density as Alaska, there would only be 15 people living there.
138
It's still possible to see the division between East and West Germany due to different light bulbs.
5
The Sahara desert expands at about 1km per month.
90
More than a dozen men have stood on the surface of the moon, but only three have been to Challenger Deep in the Marianas Trench, the deepest known spot in the ocean.
17