It takes a drop of ocean water more than 1,000 years to circulate around the world.
61
There are more than 50,000 earthquakes throughout the world every year!
47
The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
63
The Caspian Sea is also classed as the world's largest lake.
52
One cubic mile of seawater contains about 50 pounds of gold.
79
It's still possible to see the division between East and West Germany due to different light bulbs.
5
The Amazon rainforest produces more than 20% the world's oxygen supply.
182