The Caspian Sea is also classed as the world's largest lake.
52
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 Atlantic Ocean is saltier than the Pacific Ocean.
54
The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
63
The Sahara desert expands at about 1km per month.
90
The average ice berg weighs 20,000,000 tons!
54