The Caspian Sea is also classed as the world's largest lake.
52
Israel's Dead Sea is 1,312 feet below sea level.
48
Every year, Alaska has about 5,000 earthquakes.
31
A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59
The names of the continents all end with the same letter with which they start, excluding the North and South infront of AmericA.
86
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
The Amazon rainforest produces more than 20% the world's oxygen supply.
182