There's a lake under Antarctica that is 25 million years old called Lake Vostok.
109
More than 25% of the world's forests are in Siberia.
51
The 'King Ranch' in Texas is bigger than the state of Rhode Island.
49
The Amazon rainforest produces more than 20% the world's oxygen supply.
182
More than a dozen men have stood on the surface of the moon, but only three have been to Challenger Deep in the Marianas Trench, the deepest known spot in the ocean.
17
Every person in the world can fit in Texas and be given over 1000 sq ft in which to live.
14
The Caspian Sea is also classed as the world's largest lake.
52