The Caspian Sea is also classed as the world's largest lake.
52
There's a lake under Antarctica that is 25 million years old called Lake Vostok.
109
Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
55
Venice Island was built on a foundation of tree trunks. 1200 years later, those same trunks still support almost all of central Venice.
8
The North Atlantic gets 2.5 centimetres (1in) wider every year.
119
Connecticut and Rhode Island never ratified the 18th Amendment (Prohibition).
25
The Amazon rainforest produces more than 20% the world's oxygen supply.
182
A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59