The Atlantic Ocean is saltier than the Pacific Ocean.
54
The Caspian Sea is also classed as the world's largest lake.
52
More than 25% of the world's forests are in Siberia.
51
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
The Dallas/Ft. Worth airport is larger than New York City's Manhattan Island.
62
10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41
There's a lake under Antarctica that is 25 million years old called Lake Vostok.
109