The Niagara Falls moves upstream at an average rate of about 295ft a century!
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The Caspian Sea is also classed as the world's largest lake.
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The North Atlantic gets 2.5 centimetres (1in) wider every year.
119
The city of Houston, Texas is built on a swamp and is slowly sinking!
89
Check your map! Virginia extends farther west than West Virginia.
67
A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
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Check your map! The Pacific entrance of the Panama Canal is farther East than the Atlantic entrance.
40
The Atlantic Ocean is saltier than the Pacific Ocean.
54