If Manhattan had the same population density as Alaska, there would only be 15 people living there.
138
The Amazon rainforest produces more than 20% the world's oxygen supply.
182
10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41
If Antarctica's ice sheets melted, the worlds oceans would rise by 60 to 65 metres (200 - 210ft) - everywhere
181
There's a lake under Antarctica that is 25 million years old called Lake Vostok.
109
In 1850, only 8% of the people in California were women.
0
Venice Island was built on a foundation of tree trunks. 1200 years later, those same trunks still support almost all of central Venice.
8