The Caspian Sea is also classed as the world's largest lake.
52
If Antarctica's ice sheets melted, the worlds oceans would rise by 60 to 65 metres (200 - 210ft) - everywhere
181
If Manhattan had the same population density as Alaska, there would only be 15 people living there.
138
The 'King Ranch' in Texas is bigger than the state of Rhode Island.
49
Forest fires move faster uphill than downhill.
52
More than 25% of the world's forests are in Siberia.
51
10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41
