The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
63
The Atlantic Ocean is saltier than the Pacific Ocean.
54
More than 25% of the world's forests are in Siberia.
51
Every year, Alaska has about 5,000 earthquakes.
31
Check your map! The Pacific entrance of the Panama Canal is farther East than the Atlantic entrance.
40
It's still possible to see the division between East and West Germany due to different light bulbs.
5
Europe is the only continent without a desert.
62