The city of Houston, Texas is built on a swamp and is slowly sinking!
89
The Niagara Falls moves upstream at an average rate of about 295ft a century!
48
The names of the continents all end with the same letter with which they start, excluding the North and South infront of AmericA.
86
A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59
The Caspian Sea is also classed as the world's largest lake.
52
Venice Island was built on a foundation of tree trunks. 1200 years later, those same trunks still support almost all of central Venice.
8
