The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
63
If Antarctica's ice sheets melted, the worlds oceans would rise by 60 to 65 metres (200 - 210ft) - everywhere
181
The Sahara desert expands at about 1km per month.
90
Connecticut and Rhode Island never ratified the 18th Amendment (Prohibition).
25
Even Antarctica has an area code. It's 672.
58
Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
55
It's still possible to see the division between East and West Germany due to different light bulbs.
5
The warmest temperature ever recorded on Antarctica was 3 degrees F.
175