The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
63
More than 25% of the world's forests are in Siberia.
51
It's still possible to see the division between East and West Germany due to different light bulbs.
5
The Dallas/Ft. Worth airport is larger than New York City's Manhattan Island.
62
If Antarctica's ice sheets melted, the worlds oceans would rise by 60 to 65 metres (200 - 210ft) - everywhere
181
Check your map! Virginia extends farther west than West Virginia.
67
Even Antarctica has an area code. It's 672.
58