The Amazon rainforest produces more than 20% the world's oxygen supply.
182
The average ice berg weighs 20,000,000 tons!
54
There are approximately three chickens for every human on Earth.
13
Venice Island was built on a foundation of tree trunks. 1200 years later, those same trunks still support almost all of central Venice.
8
There's a lake under Antarctica that is 25 million years old called Lake Vostok.
109
The North Atlantic gets 2.5 centimetres (1in) wider every year.
119
A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59
The Sahara desert expands at about 1km per month.
90